Edit the Personjava file so that the natural ordering or a .pdf
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Edit the Person.java file so that the natural ordering or a Person is by last name in ascending order. Use the merge sort algorithm to implement the MergeSort sort method. import java.util.ArrayList; import java.util.List; public class Main { public static void main(String[] args) { List<Person> people = new ArrayList<>(); people.add(new Person("Frank", "Denton", 73)); people.add(new Person("Mark", "Cohen", 44)); people.add(new Person("Tim", "Smith", 22)); people.add(new Person("Steve", "Denton", 16)); people.add(new Person("Andy", "Ashton", 44)); people.add(new Person("Albert", "Denton", 58)); System.out.println("Before: " + people); List<Person> result = MergeSort.sort(people); System.out.println("After: " + result); } } import java.util.Collections; import java.util.List; public class MergeSort { public static List<Person> sort(List<Person> people) { } } public class Person { private String firstName; private String lastName; private int age; Person(String firstName, String lastName, int age) { this.firstName = firstName; this.lastName = lastName; this.age = age; } @Override public String toString() { return lastName + ", " + firstName + " " + age; } }.
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![Edit the Person.java file so that the natural ordering or a Person is by last name in ascending
order.
Use the merge sort algorithm to implement the MergeSort sort method.
import java.util.ArrayList;
import java.util.List;
public class Main {
public static void main(String[] args) {
List<Person> people = new ArrayList<>();
people.add(new Person("Frank", "Denton", 73));
people.add(new Person("Mark", "Cohen", 44));
people.add(new Person("Tim", "Smith", 22));
people.add(new Person("Steve", "Denton", 16));
people.add(new Person("Andy", "Ashton", 44));
people.add(new Person("Albert", "Denton", 58));
System.out.println("Before: " + people);
List<Person> result = MergeSort.sort(people);
System.out.println("After: " + result);
}
}
import java.util.Collections;
import java.util.List;
public class MergeSort {
public static List<Person> sort(List<Person> people) {
}
}
public class Person {
private String firstName;
private String lastName;
private int age;
Person(String firstName, String lastName, int age) {
this.firstName = firstName;
this.lastName = lastName;
this.age = age;
}
@Override
public String toString() {
return lastName + ", " + firstName + " " + age;
}
}](https://image.slidesharecdn.com/editthepersonjavafilesothatthenaturalorderingora-230315182031-6848807b/85/Edit-the-Personjava-file-so-that-the-natural-ordering-or-a-pdf-1-320.jpg)
Recommended
Not sure why my program wont run.Programmer S.Villegas helper N.pdf
Not sure why my program wont run.
//Programmer: S.Villegas helper Noah
//File name: PP88ArrayList.java
//Description:
//****************************
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Scanner;
public class PP88ArrayList
{
public static void main(String[]args)
{
ArrayList persons = new ArrayList(25);
String fileName = \"Zips.dat\";
int i;
Scanner filescasnner = null;
try
{
filescasnner=new Scanner(new File(fileName));
for(i=0;i persons)
{
for (int i = 0; i < persons.size(); i++)
{
for (int j = 0; j < persons.size()-1; j++)
{
if((persons.get(j).getFirstName().compareTo(persons.get(j+1).getFirstName()))>0)
{
Person temp= persons.get(j);
persons.set(j, persons.get(j+1));
persons.set(j+1, temp);
}
}
}
}
public static void sortByZipCode(ArrayList persons)
{
for (int i = 0; i < persons.size(); i++)
{
for (int j = 0; j < persons.size()-1; j++)
{
if(persons.get(j).getZipCode()>persons.get(j+1).getZipCode())
{
Person temp= persons.get(j);
persons.set(j, persons.get(j+1));
persons.set(j+1, temp);
}
}
}
}
}
//Programmer: S.Villegas helper Noah
//File name: PersonList.java
//Description:
//******************************
public class PersonList
{
private String firstName, lastName;
private int Zip;
public PersonList(String firstName,String lastName, int Zip)
{
this.firstName = firstName;
this.lastName = lastName;
this.Zip = Zip;
}
public String getFirstName()
{
return firstName;
}
public int getZipCode()
{
return Zip;
}
public String toString()
{
return String.format(\"%-15s%-15s%-10d\",firstName,lastName,Zip);
}
}
Solution
//File name: PersonList.java
public class PersonList
{
private String firstName, lastName;
private int Zip;
public PersonList(String firstName,String lastName, int Zip)
{
this.firstName = firstName;
this.lastName = lastName;
this.Zip = Zip;
}
public String getFirstName()
{
return firstName;
}
public int getZipCode()
{
return Zip;
}
public String toString()
{
return String.format(\"%-15s%-15s%-10d\",firstName,lastName,Zip);
}
}
//File name: PP88ArrayList.java
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Scanner;
public class PP88ArrayList
{
public static void main(String[]args)
{
ArrayList persons = new ArrayList(25);
String fileName = \"Zips.dat\";
int i;
Scanner filescasnner = null;
try
{
filescasnner=new Scanner(new File(fileName));
while(filescasnner.hasNextLine())
{
String firstName = filescasnner.next();
String lastName = filescasnner.next();
int Zip = filescasnner.nextInt();
persons.add(new PersonList(firstName, lastName, Zip));
}
filescasnner.close();
}
catch (FileNotFoundException e)
{
System.out.println(e.getMessage());
}
System.out.println(\"\ List of names and zip codes: \");
System.out.printf(\"%-15s%-15s%-15s\ \",\"First Name\",\"Last Name\",\"Zip\");
for (int j = 0; j < persons.size(); j++)
{
System.out.println(persons.get(j));
}
System.out.println(\"\ List of names sort by first name\");
sortByNa.
Having a problem figuring out where my errors are- The code is not run.pdf
Having a problem figuring out where my errors are. The code is not running how I need it to so I
added a few print statements to help me figure it out but to no avail. Any help would be greatly
appreciated.
import java.io.File;
import java.util.Scanner;
import java.io.FileWriter;
import java.io.IOException;
public class Main
{
public static void main(String[] args)
{
if(args.length != 1)
{
System.out.println("Usage: java Main <input_file>");
return;
}
String inputFileName = args[0];
PersonSet orderedSet = new PersonOrderedSet();
PersonSet imperialSet = new PersonImperialSet();
try(Scanner sc = new Scanner(new File(inputFileName)))
{
if(sc.hasNextLine() && sc.nextLine().startsWith("Name\tHeight (cm)\t\tWeight (kg)"))
{
while(sc.hasNextLine())
{
String line = sc.nextLine();
System.out.println("Line:" + line);
String[] parts = line.split("\t");
if(parts.length == 3)
{
String name = parts[0];
double height;
double weight;
try
{
height = Double.parseDouble(parts[1]);
weight = Double.parseDouble(parts[2]);
Person person = new Person(name, height, weight);
orderedSet.add(person);
imperialSet.add(person);
}
catch (NumberFormatException e)
{
// skip this line
}
}
}
}
}
catch (IOException e)
{
System.out.println("An error occurred while reading the file.");
e.printStackTrace();
return;
}
try(FileWriter writer = new FileWriter("hr_ordered_set_output.txt")) //write ordered set to file
{
writer.write("Name\tHeight (cm)\t\tHeight (kg)\n");
writer.write(orderedSet.toText());
}
catch(IOException e)
{
System.out.println("An error occured while writing the ordered set output file.");
e.printStackTrace();
return;
}
try(FileWriter writer = new FileWriter("hr_imperial_set_output.txt")) //write imperial set to file
{
writer.write("Name\tHeight (in)\t\tWeight (lb)\n");
writer.write(imperialSet.toText());
}
catch(IOException e)
{
System.out.println("An error occured while writing the imperial set output file.");
e.printStackTrace();
return;
}
// Output the ordered data and the imperial data to the screen/console, nicely formatted
System.out.println("Ordered data:");
System.out.println("Name Height (cm) Weight (kg)");
System.out.println("-------------------------------------------");
System.out.print(orderedSet.toString());
System.out.println("Imperial data:");
System.out.println("Name Height (in) Weight (lb)");
System.out.println("------------------------------------------");
System.out.print(imperialSet.toString());
}
}
import java.util.ArrayList;
public class Person implements Comparable<Person> //1
{
private String name;
private double height; //in centimeters
private double weight; // in kilagrams
public Person(String name, double height, double weight)//class that has constructors that
initialize name, height, and weight
{
this.name = name;
this.height = height;
this.weight = weight;
}
@Override
public String toString() //returns a string representation of the person's name, height, and weight
{
return String.format("%s\t%.1f\t\t%.1f", name, height, weight);
}
.
import java.io.BufferedReader;import java.io.File;import java.io.pdf
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
public class FileEdit {
public static List lines = new ArrayList();
public static void main(String[] args) throws IOException
{
Scanner s = new Scanner(System.in);
System.out.print("EDIT: ");
String fileName = s.nextLine();
BufferedReader br = new BufferedReader(new FileReader(new File(fileName)));
String str="";
int count=0;
while((str=br.readLine())!=null)
{
lines.add(count, str);
System.out.println((++count) + "> "+ str);
}
String text="";
String command = "";
System.out.print((++count)+"> ");
command=s.nextLine();
String commandArr[];
int flag;
while(!command.equals("E"))
{
flag=0;
commandArr = command.split("\\s");
if(commandArr[0].equals("I")) //Insertion
{
while(true)
{
if(commandArr.length==1&&flag!=2)
{
System.out.print((count)+"> ");
text = s.nextLine();
insertLine(text,count-1);
}
else if(commandArr.length==2&&flag!=2)
{
System.out.print((commandArr[1])+"> ");
count=Integer.parseInt(commandArr[1]);
text = s.nextLine();
insertLine(text,Integer.parseInt(commandArr[1])-1);
}
else
insertLine(text,count-1);
System.out.print((++count)+"> ");
command=s.nextLine();
commandArr = command.split("\\s");
if(commandArr[0].equals("I")||commandArr[0].equals("L")||commandArr[0].equals("D")||comm
andArr[0].equals("E"))
{
flag=1;
break;
}
else
{
flag=2;
text=command;
}
}
}
else if(commandArr[0].equals("L")) //Listing
{
printList();
}
else if(commandArr[0].equals("D")) //Deletion
{
if(commandArr.length==1)
{
deleteLine(count-1,count-1);
}
else if(commandArr.length==2)
{
deleteLine(Integer.parseInt(commandArr[1])-1,Integer.parseInt(commandArr[1])-1);
}
else if(commandArr.length==3)
{
deleteLine(Integer.parseInt(commandArr[1])-1,Integer.parseInt(commandArr[2])-1);
}
count=lines.size();
}
if(flag!=1)
{
System.out.print((count++)+"> ");
command = s.nextLine();
}
}
}
public static void insertLine(String text,int count)
{
if (count >= lines.size()) {
for(int i = lines.size(); i <= count; i++) {
lines.add(null);
}
}
lines.set(count,text);
}
public static void deleteLine(int start,int end)
{
for(int i=start;i<=end;i++)
lines.remove(i);
}
public static void printList()
{
for(int i=0;i "+lines.get(i));
}
}
Here is my output:
EDIT: textin.txt
1> The First Line
1>
2> And another line
3> I 3
3> The second line
4> One more line
5> L
1> null
2> null
3> The second line
4> One more line
5> D 2
3> L
1> null
2> The second line
3> One more line
4> E
How can I keep it from printing "null" after ">" and it just be blank. I need the output to look like
this:
1> The first line
2>
3> And another line
4> I 3
3> The second line
4> One more line
5> L
1> The first line
2>
3> The second line
4> One more line
5> And another line
5> D 2
4> L
1> The first line
2> The second line
3> One more line
4> And another line
5> E.
can do this in java please thanks in advance The code that y.pdf
can do this in java please thanks in advance
The code that you will write i would like it to be similar to snippets shown below for me to better
understand
the codes i have been given to fix:
1)
public abstract class BasePerson {
protected String name;
private boolean publish;
private int age;
private int id;
public BasePerson(String name,int age, boolean pub)
{
this.name =name;
this.age=age;
publish = pub;
}
public int getAge()
{
return age;
}
public abstract String getName();
protected void setId(int id)
{
this.id = id;
}
public int getId()
{
return id;
}
public boolean getPublish()
{
return publish;
}
}
2)
public class Person extends BasePerson implements Comparable<Person>
{
private static int nextId=0;
public Person(String name, int age, boolean willPublish)
{
super(name, age, willPublish);
super.setId(nextId);
nextId++;
}
public String getName()
{
return name;
}
public static String getPHeader()
{
String returnval = "IDtNametAgetWillPublish";
returnval+="n---------------------------------";
return returnval;
}
public String toString()
{
return(getId()+"t"+getName()+"t"+getAge()+"t"+getPublish());
}
public static void resetId()
{
nextId=0;
}
public int compareTo(Person other)
{
return other.getId() - this.getId();
}
3)
import java.util.ArrayList;
import java.util.Scanner;
import java.io.File;
import java.io.IOException;
public class VaccineBatch {
private int size;
private int balance=0;
private String name;
private int preference;
private ArrayList<String> contras;
public VaccineBatch( String name,int size, int preference, String contraIndicators)
{
this.size = size;
this.balance = size;
this.preference = preference;
this.name = name;
Scanner stringScan = new Scanner(contraIndicators);
contras = new ArrayList<String>();
stringScan.useDelimiter(",");
while (stringScan.hasNext())
contras.add(stringScan.next());
}
public int getSize()
{
return size;
}
public int getBalance()
{
return balance;
}
public int getPreference()
{
return preference;
}
public String getName()
{
return name;
}
public String getContras()
{
String returnval="";
for (int i=0; i<contras.size();i++)
{
returnval+=contras.get(i);
if (i<contras.size()-1)
returnval+=",";
}
return returnval;
}
public static String getVBHeader()
{
String returnval = "NametSizetBalancetPreferencetContraIndicators";
returnval+="n---------------------------------";
return returnval;
}
public boolean contraImpact(ArrayList<String> comorbs)
{
boolean found = false;
int i =0;
while((!found)&&(i<contras.size()))
{
int j=0;
while ((!found)&&(j<comorbs.size()))
{
if (contras.get(i).equals(comorbs.get(j)))
found=true;
else
j++;
}
i++;
}
return found;
}
//public int compareTo(VaccineBatch other)
//{
// return other.preference-this.preference ;
//}
public void reduceBalance()
{
balance--;
}
}
4)
import java.util.ArrayList;
public class ApprovedPerson extends BasePerson {
ArrayList<String> comorbidities;
public ApprovedPerson(int age, String name, boolean publish, int id)
{
super( name, age,publish);
super.
Java Assignment.Implement a binary search algorithm on an array..pdf
It is estimated that 80% of all eighteen-year old women have weights ranging from 103.5 to
144.5 lb. Assuming the weight distribution can be adequately modeled by a normal curve and
that 103.5 and 144.5 are equidistant from the average weight Mu , calculate sigma
Solution
Mean = (103.5 + 144.5)/2 = 124
Margin of Error (144.5.
Labprogram.javaLinkedList.javaimport java.util.NoSuchElementEx.pdf
Labprogram.java
LinkedList.java
import java.util.NoSuchElementException;
public class LinkedList {
private class Node {
private T data;
private Node next;
private Node prev;
public Node(T data) {
this.data = data;
this.next = null;
this.prev = null;
}
}
private int length;
private Node first;
private Node last;
private Node iterator;
/**** CONSTRUCTORS ****/
public LinkedList() {
first = null;
last = null;
iterator = null;
length = 0;
}
/**
* Converts the given array into a LinkedList
*
* @param array the array of values to insert into this LinkedList
* @postcondition
*/
public LinkedList(T[] array) {
}
/**
* Instantiates a new LinkedList by copying another List
*
* @param original the LinkedList to copy
* @postcondition a new List object, which is an identical,
* but separate, copy of the LinkedList original
*/
public LinkedList(LinkedList original) {
}
public T getFirst() throws NoSuchElementException {
if (isEmpty()) {
throw new NoSuchElementException("The list is empty");
}
return first.data;
}
public T getLast() throws NoSuchElementException {
if (isEmpty()) {
throw new NoSuchElementException("The list is empty");
}
return last.data;
}
public T getIterator() throws NullPointerException {
if (iterator != null) {
return iterator.data;
} else {
throw new NullPointerException("Iterator is off the end opf the list.");
}
}
public int getLength() {
return length;
}
public boolean isEmpty() {
return length == 0;
}
public boolean offEnd() {
return iterator == null;
}
public void addFirst(T data) {
Node newNode = new Node(data);
if (isEmpty()) {
first = newNode;
last = newNode;
} else {
newNode.next = first;
first.prev = newNode;
first = newNode;
}
length++;
}
public void addLast(T data) {
Node newNode = new Node(data);
if (isEmpty()) {
first = newNode;
last = newNode;
} else {
last.next = newNode;
newNode.prev = last;
last = newNode;
}
length++;
}
public void addIterator(T data) throws NullPointerException {
if (offEnd()) {
throw new NullPointerException("addIterator Iterator is off end.");
}
if (iterator == last) {
addLast(data);
} else {
Node newNode = new Node(data);
Node next = iterator.next;
newNode.next = next;
newNode.prev = iterator;
iterator.next = newNode;
next.prev = newNode;
length++;
}
}
public void removeFirst() throws NoSuchElementException {
if (isEmpty()) {
throw new NoSuchElementException("The list is empty");
}
if (length == 1) {
first = null;
last = null;
iterator = null;
} else {
if (iterator == first) {
iterator = null;
}
first = first.next;
first.prev = null;
}
length--;
}
public void removeLast() throws NoSuchElementException {
if (isEmpty()) {
throw new NoSuchElementException("The list is empty");
}
if (length == 1) {
first = null;
last = null;
iterator = null;
} else {
if (iterator == last) {
iterator = null;
}
last = last.prev;
last.next = null;
}
length--;
}
public void removeIterator() throws NullPointerException {
if (offEnd()) {
throw new NullPointerException("Iterator is off the end opf the list.");
}
if (iterator .
Recommended
Not sure why my program wont run.Programmer S.Villegas helper N.pdf
Not sure why my program wont run.
//Programmer: S.Villegas helper Noah
//File name: PP88ArrayList.java
//Description:
//****************************
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Scanner;
public class PP88ArrayList
{
public static void main(String[]args)
{
ArrayList persons = new ArrayList(25);
String fileName = \"Zips.dat\";
int i;
Scanner filescasnner = null;
try
{
filescasnner=new Scanner(new File(fileName));
for(i=0;i persons)
{
for (int i = 0; i < persons.size(); i++)
{
for (int j = 0; j < persons.size()-1; j++)
{
if((persons.get(j).getFirstName().compareTo(persons.get(j+1).getFirstName()))>0)
{
Person temp= persons.get(j);
persons.set(j, persons.get(j+1));
persons.set(j+1, temp);
}
}
}
}
public static void sortByZipCode(ArrayList persons)
{
for (int i = 0; i < persons.size(); i++)
{
for (int j = 0; j < persons.size()-1; j++)
{
if(persons.get(j).getZipCode()>persons.get(j+1).getZipCode())
{
Person temp= persons.get(j);
persons.set(j, persons.get(j+1));
persons.set(j+1, temp);
}
}
}
}
}
//Programmer: S.Villegas helper Noah
//File name: PersonList.java
//Description:
//******************************
public class PersonList
{
private String firstName, lastName;
private int Zip;
public PersonList(String firstName,String lastName, int Zip)
{
this.firstName = firstName;
this.lastName = lastName;
this.Zip = Zip;
}
public String getFirstName()
{
return firstName;
}
public int getZipCode()
{
return Zip;
}
public String toString()
{
return String.format(\"%-15s%-15s%-10d\",firstName,lastName,Zip);
}
}
Solution
//File name: PersonList.java
public class PersonList
{
private String firstName, lastName;
private int Zip;
public PersonList(String firstName,String lastName, int Zip)
{
this.firstName = firstName;
this.lastName = lastName;
this.Zip = Zip;
}
public String getFirstName()
{
return firstName;
}
public int getZipCode()
{
return Zip;
}
public String toString()
{
return String.format(\"%-15s%-15s%-10d\",firstName,lastName,Zip);
}
}
//File name: PP88ArrayList.java
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Scanner;
public class PP88ArrayList
{
public static void main(String[]args)
{
ArrayList persons = new ArrayList(25);
String fileName = \"Zips.dat\";
int i;
Scanner filescasnner = null;
try
{
filescasnner=new Scanner(new File(fileName));
while(filescasnner.hasNextLine())
{
String firstName = filescasnner.next();
String lastName = filescasnner.next();
int Zip = filescasnner.nextInt();
persons.add(new PersonList(firstName, lastName, Zip));
}
filescasnner.close();
}
catch (FileNotFoundException e)
{
System.out.println(e.getMessage());
}
System.out.println(\"\ List of names and zip codes: \");
System.out.printf(\"%-15s%-15s%-15s\ \",\"First Name\",\"Last Name\",\"Zip\");
for (int j = 0; j < persons.size(); j++)
{
System.out.println(persons.get(j));
}
System.out.println(\"\ List of names sort by first name\");
sortByNa.
Having a problem figuring out where my errors are- The code is not run.pdf
Having a problem figuring out where my errors are. The code is not running how I need it to so I
added a few print statements to help me figure it out but to no avail. Any help would be greatly
appreciated.
import java.io.File;
import java.util.Scanner;
import java.io.FileWriter;
import java.io.IOException;
public class Main
{
public static void main(String[] args)
{
if(args.length != 1)
{
System.out.println("Usage: java Main <input_file>");
return;
}
String inputFileName = args[0];
PersonSet orderedSet = new PersonOrderedSet();
PersonSet imperialSet = new PersonImperialSet();
try(Scanner sc = new Scanner(new File(inputFileName)))
{
if(sc.hasNextLine() && sc.nextLine().startsWith("Name\tHeight (cm)\t\tWeight (kg)"))
{
while(sc.hasNextLine())
{
String line = sc.nextLine();
System.out.println("Line:" + line);
String[] parts = line.split("\t");
if(parts.length == 3)
{
String name = parts[0];
double height;
double weight;
try
{
height = Double.parseDouble(parts[1]);
weight = Double.parseDouble(parts[2]);
Person person = new Person(name, height, weight);
orderedSet.add(person);
imperialSet.add(person);
}
catch (NumberFormatException e)
{
// skip this line
}
}
}
}
}
catch (IOException e)
{
System.out.println("An error occurred while reading the file.");
e.printStackTrace();
return;
}
try(FileWriter writer = new FileWriter("hr_ordered_set_output.txt")) //write ordered set to file
{
writer.write("Name\tHeight (cm)\t\tHeight (kg)\n");
writer.write(orderedSet.toText());
}
catch(IOException e)
{
System.out.println("An error occured while writing the ordered set output file.");
e.printStackTrace();
return;
}
try(FileWriter writer = new FileWriter("hr_imperial_set_output.txt")) //write imperial set to file
{
writer.write("Name\tHeight (in)\t\tWeight (lb)\n");
writer.write(imperialSet.toText());
}
catch(IOException e)
{
System.out.println("An error occured while writing the imperial set output file.");
e.printStackTrace();
return;
}
// Output the ordered data and the imperial data to the screen/console, nicely formatted
System.out.println("Ordered data:");
System.out.println("Name Height (cm) Weight (kg)");
System.out.println("-------------------------------------------");
System.out.print(orderedSet.toString());
System.out.println("Imperial data:");
System.out.println("Name Height (in) Weight (lb)");
System.out.println("------------------------------------------");
System.out.print(imperialSet.toString());
}
}
import java.util.ArrayList;
public class Person implements Comparable<Person> //1
{
private String name;
private double height; //in centimeters
private double weight; // in kilagrams
public Person(String name, double height, double weight)//class that has constructors that
initialize name, height, and weight
{
this.name = name;
this.height = height;
this.weight = weight;
}
@Override
public String toString() //returns a string representation of the person's name, height, and weight
{
return String.format("%s\t%.1f\t\t%.1f", name, height, weight);
}
.
import java.io.BufferedReader;import java.io.File;import java.io.pdf
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
public class FileEdit {
public static List lines = new ArrayList();
public static void main(String[] args) throws IOException
{
Scanner s = new Scanner(System.in);
System.out.print("EDIT: ");
String fileName = s.nextLine();
BufferedReader br = new BufferedReader(new FileReader(new File(fileName)));
String str="";
int count=0;
while((str=br.readLine())!=null)
{
lines.add(count, str);
System.out.println((++count) + "> "+ str);
}
String text="";
String command = "";
System.out.print((++count)+"> ");
command=s.nextLine();
String commandArr[];
int flag;
while(!command.equals("E"))
{
flag=0;
commandArr = command.split("\\s");
if(commandArr[0].equals("I")) //Insertion
{
while(true)
{
if(commandArr.length==1&&flag!=2)
{
System.out.print((count)+"> ");
text = s.nextLine();
insertLine(text,count-1);
}
else if(commandArr.length==2&&flag!=2)
{
System.out.print((commandArr[1])+"> ");
count=Integer.parseInt(commandArr[1]);
text = s.nextLine();
insertLine(text,Integer.parseInt(commandArr[1])-1);
}
else
insertLine(text,count-1);
System.out.print((++count)+"> ");
command=s.nextLine();
commandArr = command.split("\\s");
if(commandArr[0].equals("I")||commandArr[0].equals("L")||commandArr[0].equals("D")||comm
andArr[0].equals("E"))
{
flag=1;
break;
}
else
{
flag=2;
text=command;
}
}
}
else if(commandArr[0].equals("L")) //Listing
{
printList();
}
else if(commandArr[0].equals("D")) //Deletion
{
if(commandArr.length==1)
{
deleteLine(count-1,count-1);
}
else if(commandArr.length==2)
{
deleteLine(Integer.parseInt(commandArr[1])-1,Integer.parseInt(commandArr[1])-1);
}
else if(commandArr.length==3)
{
deleteLine(Integer.parseInt(commandArr[1])-1,Integer.parseInt(commandArr[2])-1);
}
count=lines.size();
}
if(flag!=1)
{
System.out.print((count++)+"> ");
command = s.nextLine();
}
}
}
public static void insertLine(String text,int count)
{
if (count >= lines.size()) {
for(int i = lines.size(); i <= count; i++) {
lines.add(null);
}
}
lines.set(count,text);
}
public static void deleteLine(int start,int end)
{
for(int i=start;i<=end;i++)
lines.remove(i);
}
public static void printList()
{
for(int i=0;i "+lines.get(i));
}
}
Here is my output:
EDIT: textin.txt
1> The First Line
1>
2> And another line
3> I 3
3> The second line
4> One more line
5> L
1> null
2> null
3> The second line
4> One more line
5> D 2
3> L
1> null
2> The second line
3> One more line
4> E
How can I keep it from printing "null" after ">" and it just be blank. I need the output to look like
this:
1> The first line
2>
3> And another line
4> I 3
3> The second line
4> One more line
5> L
1> The first line
2>
3> The second line
4> One more line
5> And another line
5> D 2
4> L
1> The first line
2> The second line
3> One more line
4> And another line
5> E.
can do this in java please thanks in advance The code that y.pdf
can do this in java please thanks in advance
The code that you will write i would like it to be similar to snippets shown below for me to better
understand
the codes i have been given to fix:
1)
public abstract class BasePerson {
protected String name;
private boolean publish;
private int age;
private int id;
public BasePerson(String name,int age, boolean pub)
{
this.name =name;
this.age=age;
publish = pub;
}
public int getAge()
{
return age;
}
public abstract String getName();
protected void setId(int id)
{
this.id = id;
}
public int getId()
{
return id;
}
public boolean getPublish()
{
return publish;
}
}
2)
public class Person extends BasePerson implements Comparable<Person>
{
private static int nextId=0;
public Person(String name, int age, boolean willPublish)
{
super(name, age, willPublish);
super.setId(nextId);
nextId++;
}
public String getName()
{
return name;
}
public static String getPHeader()
{
String returnval = "IDtNametAgetWillPublish";
returnval+="n---------------------------------";
return returnval;
}
public String toString()
{
return(getId()+"t"+getName()+"t"+getAge()+"t"+getPublish());
}
public static void resetId()
{
nextId=0;
}
public int compareTo(Person other)
{
return other.getId() - this.getId();
}
3)
import java.util.ArrayList;
import java.util.Scanner;
import java.io.File;
import java.io.IOException;
public class VaccineBatch {
private int size;
private int balance=0;
private String name;
private int preference;
private ArrayList<String> contras;
public VaccineBatch( String name,int size, int preference, String contraIndicators)
{
this.size = size;
this.balance = size;
this.preference = preference;
this.name = name;
Scanner stringScan = new Scanner(contraIndicators);
contras = new ArrayList<String>();
stringScan.useDelimiter(",");
while (stringScan.hasNext())
contras.add(stringScan.next());
}
public int getSize()
{
return size;
}
public int getBalance()
{
return balance;
}
public int getPreference()
{
return preference;
}
public String getName()
{
return name;
}
public String getContras()
{
String returnval="";
for (int i=0; i<contras.size();i++)
{
returnval+=contras.get(i);
if (i<contras.size()-1)
returnval+=",";
}
return returnval;
}
public static String getVBHeader()
{
String returnval = "NametSizetBalancetPreferencetContraIndicators";
returnval+="n---------------------------------";
return returnval;
}
public boolean contraImpact(ArrayList<String> comorbs)
{
boolean found = false;
int i =0;
while((!found)&&(i<contras.size()))
{
int j=0;
while ((!found)&&(j<comorbs.size()))
{
if (contras.get(i).equals(comorbs.get(j)))
found=true;
else
j++;
}
i++;
}
return found;
}
//public int compareTo(VaccineBatch other)
//{
// return other.preference-this.preference ;
//}
public void reduceBalance()
{
balance--;
}
}
4)
import java.util.ArrayList;
public class ApprovedPerson extends BasePerson {
ArrayList<String> comorbidities;
public ApprovedPerson(int age, String name, boolean publish, int id)
{
super( name, age,publish);
super.
Java Assignment.Implement a binary search algorithm on an array..pdf
It is estimated that 80% of all eighteen-year old women have weights ranging from 103.5 to
144.5 lb. Assuming the weight distribution can be adequately modeled by a normal curve and
that 103.5 and 144.5 are equidistant from the average weight Mu , calculate sigma
Solution
Mean = (103.5 + 144.5)/2 = 124
Margin of Error (144.5.
Labprogram.javaLinkedList.javaimport java.util.NoSuchElementEx.pdf
Labprogram.java
LinkedList.java
import java.util.NoSuchElementException;
public class LinkedList {
private class Node {
private T data;
private Node next;
private Node prev;
public Node(T data) {
this.data = data;
this.next = null;
this.prev = null;
}
}
private int length;
private Node first;
private Node last;
private Node iterator;
/**** CONSTRUCTORS ****/
public LinkedList() {
first = null;
last = null;
iterator = null;
length = 0;
}
/**
* Converts the given array into a LinkedList
*
* @param array the array of values to insert into this LinkedList
* @postcondition
*/
public LinkedList(T[] array) {
}
/**
* Instantiates a new LinkedList by copying another List
*
* @param original the LinkedList to copy
* @postcondition a new List object, which is an identical,
* but separate, copy of the LinkedList original
*/
public LinkedList(LinkedList original) {
}
public T getFirst() throws NoSuchElementException {
if (isEmpty()) {
throw new NoSuchElementException("The list is empty");
}
return first.data;
}
public T getLast() throws NoSuchElementException {
if (isEmpty()) {
throw new NoSuchElementException("The list is empty");
}
return last.data;
}
public T getIterator() throws NullPointerException {
if (iterator != null) {
return iterator.data;
} else {
throw new NullPointerException("Iterator is off the end opf the list.");
}
}
public int getLength() {
return length;
}
public boolean isEmpty() {
return length == 0;
}
public boolean offEnd() {
return iterator == null;
}
public void addFirst(T data) {
Node newNode = new Node(data);
if (isEmpty()) {
first = newNode;
last = newNode;
} else {
newNode.next = first;
first.prev = newNode;
first = newNode;
}
length++;
}
public void addLast(T data) {
Node newNode = new Node(data);
if (isEmpty()) {
first = newNode;
last = newNode;
} else {
last.next = newNode;
newNode.prev = last;
last = newNode;
}
length++;
}
public void addIterator(T data) throws NullPointerException {
if (offEnd()) {
throw new NullPointerException("addIterator Iterator is off end.");
}
if (iterator == last) {
addLast(data);
} else {
Node newNode = new Node(data);
Node next = iterator.next;
newNode.next = next;
newNode.prev = iterator;
iterator.next = newNode;
next.prev = newNode;
length++;
}
}
public void removeFirst() throws NoSuchElementException {
if (isEmpty()) {
throw new NoSuchElementException("The list is empty");
}
if (length == 1) {
first = null;
last = null;
iterator = null;
} else {
if (iterator == first) {
iterator = null;
}
first = first.next;
first.prev = null;
}
length--;
}
public void removeLast() throws NoSuchElementException {
if (isEmpty()) {
throw new NoSuchElementException("The list is empty");
}
if (length == 1) {
first = null;
last = null;
iterator = null;
} else {
if (iterator == last) {
iterator = null;
}
last = last.prev;
last.next = null;
}
length--;
}
public void removeIterator() throws NullPointerException {
if (offEnd()) {
throw new NullPointerException("Iterator is off the end opf the list.");
}
if (iterator .
import java-util-ArrayList- import java-util-Collections- import java-.pdf
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import static java.lang.System.out;
public class homework {
public static void main(String[] args) {
List<Integer> list = new ArrayList<>();
for (int i = 0; i < 10; i++)
list.add(int) (Math.random()* 10) + 1);
Collections.sort(list);
System.out.println("The list id : " + list);
int index =linearSearch(list, 10);
if (index >+ 0)
System.out.println("Linear search: the number 5 was found at index " + index);
else
System.out.println("Linear search: the number 5 is not found ");
List<String> names = new ArrayList<>();
names.add("Tyson");
names.add("John");
names.add("Edgar");
names.add("LouLou");
Collections.sort(list);
System.out.println("The names are : " + names);
index = linearSearch(names, "JOhn");
if (index >= 0)
System.out.println("Linear search: Edgar was found at index " + names);
else
System.out.println("Linear search: Edgar is not found" + names);
}
public static <E> int linearSearch(List<E> lsit, E data) {
for (int i = 0; i < list.size(); i++)
if (list.get(i).equals(data))
return i;
return -1;
}
}
Chapter 14 - Linear Search and Binary Search - Assignment Due Wednesday by 11:59pm P
Points 100 Submitting a text entry box or a file upload Allowed Attempts 1 Available until Mar
1 at 11:59pm Modify the binarySearch method shown in the video lecture so that it's generic.
Test it with at least two types to make sure it works. Hint 1: Examine the review problem and its
solution, which modifies the linear search algorithm in the same way. Hint 2: Your binarySearch
method signature should be: "private static < E extends Comparable > boolean binarySearch(List
list, E data): Turn in the following, - The source files (no zip file, just the individual java files). -
A screen shot of your program in action. It should show the result of the test run.
.
Here is my code for a linefile editor import java.io.BufferedRea.pdf
Here is my code for a line/file editor:
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
public class FileEdit {
public static List lines = new ArrayList();
public static void main(String[] args) throws IOException
{
Scanner s = new Scanner(System.in);
System.out.print("EDIT: ");
String fileName = s.nextLine();
BufferedReader br = new BufferedReader(new FileReader(new File(fileName)));
String str="";
int count=0;
while((str=br.readLine())!=null)
{
lines.add(count, str);
System.out.println((++count) + "> "+ str);
}
String text="";
String command = "";
System.out.print((++count)+"> ");
command=s.nextLine();
String commandArr[];
int flag;
while(!command.equals("E"))
{
flag=0;
commandArr = command.split("\\s");
if(commandArr[0].equals("I")) //Insertion
{
while(true)
{
if(commandArr.length==1&&flag!=2)
{
System.out.print((count)+"> ");
text = s.nextLine();
insertLine(text,count-1);
}
else if(commandArr.length==2&&flag!=2)
{
System.out.print((commandArr[1])+"> ");
count=Integer.parseInt(commandArr[1]);
text = s.nextLine();
insertLine(text,Integer.parseInt(commandArr[1])-1);
}
else
insertLine(text,count-1);
System.out.print((++count)+"> ");
command=s.nextLine();
commandArr = command.split("\\s");
if(commandArr[0].equals("I")||commandArr[0].equals("L")||commandArr[0].equals("D")||comm
andArr[0].equals("E"))
{
flag=1;
break;
}
else
{
flag=2;
text=command;
}
}
}
else if(commandArr[0].equals("L")) //Listing
{
printList();
}
else if(commandArr[0].equals("D")) //Deletion
{
if(commandArr.length==1)
{
deleteLine(count-1,count-1);
}
else if(commandArr.length==2)
{
deleteLine(Integer.parseInt(commandArr[1])-1,Integer.parseInt(commandArr[1])-1);
}
else if(commandArr.length==3)
{
deleteLine(Integer.parseInt(commandArr[1])-1,Integer.parseInt(commandArr[2])-1);
}
count=lines.size();
}
if(flag!=1)
{
System.out.print((count++)+"> ");
command = s.nextLine();
}
}
}
public static void insertLine(String text,int count)
{
if (count >= lines.size()) {
for(int i = lines.size(); i <= count; i++) {
lines.add(null);
}
}
lines.set(count,text);
}
public static void deleteLine(int start,int end)
{
for(int i=start;i<=end;i++)
lines.remove(i);
}
public static void printList()
{
for(int i=0;i "+lines.get(i));
}
}
Here is my output:
EDIT: textin.txt
1> The First Line
1>
2> And another line
3> I 3
3> The second line
4> One more line
5> L
1> null
2> null
3> The second line
4> One more line
5> D 2
3> L
1> null
2> The second line
3> One more line
4> E
How can I keep it from printing "null" after ">" and it just be blank. I need the output to look like
this:
1> The first line
2>
3> And another line
4> I 3
3> The second line
4> One more line
5> L
1> The first line
2>
3> The second line
4> One more line
5> And another line
5> D 2
4> L
1> The first line
2> The second line
3> One more line
4> And another line
5> E.
1. Section1.- Populating the list of persons on the person listing f.pdf
1. Section1.- Populating the list of persons on the person listing form, and put functionality in the
Add Person button (1 mark)
a. In PersonListing: The starting code places only one item in the list of persons. Discussions
with the original developer have yielded that the method showTable in PersonListing is
responsible for populating the table. The addToTable method which accepts one person and adds
information regarding that person to the table should NOT be modified. Complete showTable so
that an entry is placed in the table for each row in the file person.dat.
b. In PersonEntry: Modify PersonEntry so that it is able to store an instance of PersonListing.
c. In PersonEntry: Modify the Constructor of PersonEntry so that it accepts an instance of
PersonListing, and then sets the local instance variable to the value accepted by the constructor.
d. In PersonListing: Add a listener to the Add Person button so that when it is clicked, an
instance of PersonEntry is displayed. When invoking the instance of PersonEntry, a reference to
the current instance of PersonListing should be passed as an argument to the constructor. //Hint a
listener is already included in the starting code that adds functionality to the Close button.
2. Section 2. Implementing functionality in the PersonEntry. (1.5 marks)
a. Modify the PersonEntry object so that the interface looks like that presented in Figure 3
Hints:
i. You may need to add a JLabel and a JCheckBox
ii. The layout from the previous developer for the panel displays data on two rows.
b. Add functionality to the Close button of the PersonEntry form so that it is no longer visible
when it is clicked.
Hint: one way to do it is to
i. Store a reference to a PersonEntry as an instance variable
ii. Set the instance of PersonEntry to this in the constructor
iii. In the appropriate listener, invoke setVisible on the instance of PersonEntry with an
argument of false.
c. Implement functionality in the Save button of PersonEntry so that when it is clicked, the data
is first validated to ensure both first and last names have been entered, and that the age is
an integer. If data is valid, the addPerson method of PersonListing is called, and the person
entry form disappears. Note that the addPerson method effectively adds a person to
the arraylist holding person list data, and updates the data in the list.
Hints/Questions
i. Have we already met a method to split a string into parts?
ii. What functionality can tell if a value can be converted to an Integer?
iii. Remember the getText() method of a jTextField returns the value of the text it currently
displays.
3. Section 3 Complete functionality on listing screen (1.5 marks)
a. The starting code includes the definition of a JButton named cmdSortAge, but it is not
shown on the PersonListing screen. Modify the PersonListingScreen to allow it to be shown
b. Add a listener which implements the functionality to sort the list in ascending order of age.
Hints:
i. You should alrea.
1. Section1.- Populating the list of persons on the person listing.pdf
1. Section1.- Populating the list of persons on the person listing form, and put functionality in the
Add Person button (1 mark)
a. In PersonListing: The starting code places only one item in the list of persons. Discussions
with the original developer have yielded that the method showTable in PersonListing is
responsible for populating the table. The addToTable method which accepts one person and adds
information regarding that person to the table should NOT be modified. Complete showTable so
that an entry is placed in the table for each row in the file person.dat.
b. In PersonEntry: Modify PersonEntry so that it is able to store an instance of PersonListing.
c. In PersonEntry: Modify the Constructor of PersonEntry so that it accepts an instance of
PersonListing, and then sets the local instance variable to the value accepted by the constructor.
d. In PersonListing: Add a listener to the Add Person button so that when it is clicked, an
instance of PersonEntry is displayed. When invoking the instance of PersonEntry, a reference to
the current instance of PersonListing should be passed as an argument to the constructor. //Hint a
listener is already included in the starting code that adds functionality to the Close button.
2. Section 2. Implementing functionality in the PersonEntry. (1.5 marks)
a. Modify the PersonEntry object so that the interface looks like that presented in Figure 3
Hints:
i. You may need to add a JLabel and a JCheckBox
ii. The layout from the previous developer for the panel displays data on two rows.
b. Add functionality to the Close button of the PersonEntry form so that it is no longer visible
when it is clicked.
Hint: one way to do it is to
i. Store a reference to a PersonEntry as an instance variable
ii. Set the instance of PersonEntry to this in the constructor
iii. In the appropriate listener, invoke setVisible on the instance of PersonEntry with an argument
of false.
c. Implement functionality in the Save button of PersonEntry so that when it is clicked, the data
is first validated to ensure both first and last names have been entered, and that the age is an
integer. If data is valid, the addPerson method of PersonListing is called, and the person entry
form disappears. Note that the addPerson method effectively adds a person to the arraylist
holding person list data, and updates the data in the list.
Hints/Questions
i. Have we already met a method to split a string into parts?
ii. What functionality can tell if a value can be converted to an Integer?
iii. Remember the getText() method of a jTextField returns the value of the text it currently
displays.
3. Section 3 Complete functionality on listing screen (1.5 marks)
a. The starting code includes the definition of a JButton named cmdSortAge, but it is not shown
on the PersonListing screen. Modify the PersonListingScreen to allow it to be shown
b. Add a listener which implements the functionality to sort the list in ascending order of age.
Hints:
i. You should alrea.
Create a text file that contains ten person objects where each object.docx
Create a text file that contains ten person objects where each object is represented on a separated line with each attribute separated by a comma. Create a method that reads form the file, creates one person object per line, and stores the object in an Array List object. Write the stored objects out by last name of the console.
Solution
//Program
package person;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.util.ArrayList;
import java.util.Scanner;
//person class
class Person
{
String lastname;
String firstname;
int age;
public Person(String last, String first, int a)
{
firstname=first;
lastname=last;
age=a;
}
@Override
public String toString()
{
return (lastname+\" \"+firstname+\" \"+age);
}
}
public class PersonDemo {
public static void main(String[] args) throws FileNotFoundException {
//creating array list
ArrayList <Person> persons=new ArrayList<>();
//reading person data file
Scanner infile=new Scanner(new FileReader(\"person.txt\"));
while(infile.hasNextLine())
{
String words[]=infile.nextLine().split(\",\");
persons.add(new Person(words[0],words[1],Integer.parseInt(words[2])));
}
//display person s details
System.out.println(\"Person details: \");
for(int i=0;i<persons.size();i++)
{
System.out.println(persons.get(i).toString());
}
}
}
///////////////////////////////////////////////////////////////////
//person.txt input file
Joseph,Daniel,23
Jhon,Stephen,34
Joseph,Maria,25
Fernandez,George,67
Jaitely,Arun,29
Kumar,Narendra,50
Victor,Prince,40
George,Jincy,35
Roldan,Tinu,28
Antony,Tim,27
.
Change the code in Writer.java only to get it working. Must contain .pdf
Change the code in Writer.java only to get it working. Must contain methods: logReverse() ,
logMax(), logDuplicates(),
This lab is going to focus on File Output, which you will find is somewhat similar to console
output.
FileMain.java
import java.io.IOException;
import java.util.ArrayList;
import java.util.Scanner;
public class FileMain {
public static void main(String[] args) throws IOException{
Scanner scnr = new Scanner(System.in);
System.out.print("Please enter the name of the file you would like to read: ");
String fileName = scnr.next();
Reader reader = new Reader();
ArrayList fileContents = reader.getFileContents(fileName);
System.out.println("Please enter a name for your new file: ");
String newFileName = scnr.next();
Writer fileOut = new Writer(newFileName);
fileOut.logReverse(fileContents);
fileOut.logMax(fileContents);
fileOut.logDuplicates(fileContents);
fileOut.closeWriter();
scnr.close();
}
}
Filetester.java
import java.io.IOException;
import java.util.ArrayList;
public class FileTester {
public static boolean testLogReverse(ArrayList contents) throws IOException {
Writer writer = new Writer("logReverseTest.txt");
writer.logReverse(contents);
writer.closeWriter();
ArrayList expected = new ArrayList();
expected.add("Reversed file contents: ");
expected.add("58");
expected.add("12");
expected.add("19");
expected.add("42");
expected.add("12");
expected.add("End of file.");
Reader testReader = new Reader();
ArrayList result = testReader.getFileContents("logReverseTest.txt");
if(expected.equals(result)) return true;
else return false;
}
public static boolean testLogMax(ArrayList contents) throws IOException {
Writer writer = new Writer("logMaxTest.txt");
writer.logMax(contents);
writer.closeWriter();
ArrayList expected = new ArrayList();
expected.add("The largest number in the file is: 58");
expected.add("End of file.");
Reader testReader = new Reader();
ArrayList result = testReader.getFileContents("logMaxTest.txt");
if(expected.equals(result)) return true;
else return false;
}
public static boolean testLogDuplicates(ArrayList contents) throws IOException {
Writer writer = new Writer("logDuplicatesTest.txt");
writer.logDuplicates(contents);
writer.closeWriter();
ArrayList expected = new ArrayList();
expected.add("Duplicates found: true");
expected.add("End of file.");
Reader testReader = new Reader();
ArrayList result = testReader.getFileContents("logDuplicatesTest.txt");
if(expected.equals(result)) return true;
else return false;
}
public static void main(String[] args) throws IOException {
Reader reader = new Reader();
ArrayList fileContents = reader.getFileContents("nums.txt");
System.out.println("logReverse test passed? " + testLogReverse(fileContents));
System.out.println("logMax test passed? " + testLogMax(fileContents));
System.out.println("logDuplicates test passed? " + testLogDuplicates(fileContents));
}
}
Reader.java
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Sca.
Please help me with a UML class diagram for the following code im.pdf
Please help me with a UML class diagram for the following code:
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
public class FileEdit {
public static List lines = new ArrayList();
public static void main(String[] args) throws IOException
{
Scanner s = new Scanner(System.in);
System.out.print("EDIT: ");
String fileName = s.nextLine();
BufferedReader br = new BufferedReader(new FileReader(new File(fileName)));
String str="";
int count=0;
while((str=br.readLine())!=null)
{
lines.add(count, str);
System.out.println((++count) + "> "+ str);
}
String text="";
String command = "";
System.out.print((++count)+"> ");
command=s.nextLine();
String commandArr[];
int flag;
while(!command.equals("E"))
{
flag=0;
commandArr = command.split("\\s");
if(commandArr[0].equals("I")) //Insertion
{
while(true)
{
if(commandArr.length==1&&flag!=2)
{
System.out.print((count)+"> ");
text = s.nextLine();
insertLine(text,count-1);
}
else if(commandArr.length==2&&flag!=2)
{
System.out.print((commandArr[1])+"> ");
count=Integer.parseInt(commandArr[1]);
text = s.nextLine();
insertLine(text,Integer.parseInt(commandArr[1])-1);
}
else
insertLine(text,count-1);
System.out.print((++count)+"> ");
command=s.nextLine();
commandArr = command.split("\\s");
if(commandArr[0].equals("I")||commandArr[0].equals("L")||commandArr[0].equals("D")||comm
andArr[0].equals("E"))
{
flag=1;
break;
}
else
{
flag=2;
text=command;
}
}
}
else if(commandArr[0].equals("L")) //Listing
{
printList();
}
else if(commandArr[0].equals("D")) //Deletion
{
if(commandArr.length==1)
{
deleteLine(count-1,count-1);
}
else if(commandArr.length==2)
{
deleteLine(Integer.parseInt(commandArr[1])-1,Integer.parseInt(commandArr[1])-1);
}
else if(commandArr.length==3)
{
deleteLine(Integer.parseInt(commandArr[1])-1,Integer.parseInt(commandArr[2])-1);
}
count=lines.size();
}
if(flag!=1)
{
System.out.print((count++)+"> ");
command = s.nextLine();
}
}
}
public static void insertLine(String text,int count)
{
if (count >= lines.size()) {
for(int i = lines.size(); i <= count; i++) {
lines.add(null);
}
}
lines.set(count,text);
}
public static void deleteLine(int start,int end)
{
for(int i=start;i<=end;i++)
lines.remove(i);
}
public static void printList()
{
for(int i=0;i "+lines.get(i));
}
}.
Please I am trying to get this code to output in -txt file- I need you.pdf
Please I am trying to get this code to output in .txt file:
I need your help:
import java.io.File; // Import the File class
import java.io.FileNotFoundException; // Import this class to handle errors
// Import the Scanner class to read text files
import java.util.*;
import java.io.*;
public class KMeans {
List<double []> clusterCentroids;
Map<Integer,List<Double>> dataMatrix;
List<double[]> data;
Integer numClusters;
public void writeFile(List<Double> value, File filename) {
try {
FileWriter myWriter = new FileWriter(filename);
myWriter.write(value.toString());
myWriter.close();
System.out.println("Successfully wrote to the file.");
} catch (IOException e) {
System.out.println("An error occurred.");
e.printStackTrace();
}
}
public KMeans() {
data = new ArrayList<double []>();
dataMatrix = new LinkedHashMap<>();
}
void readData(String filePath, int n, List<Double> c) {
numClusters = n;
try {
BufferedReader br = new BufferedReader(new FileReader(new File(filePath)));
String line;
int i = 0;
while((line = br.readLine()) != null) {
String [] elem = line.split("\\s+");
int j = 0;
for(String d : elem) {
if(isCentroid(j, c)) {
this.clusterCentroids.get(i)[j] = ((Double.valueOf(d)));
}
//data.get(i)[j] = ((Double.valueOf(d)));
System.out.println(data.get(j)[i]);
}
System.out.println();
i++;
}
br.close();
} catch (IOException ex) {
ex.printStackTrace();
}
}
private boolean isCentroid(int j, List<Double> c) {
for(int i = 0; i < c.size(); i++) {
if(j == c.get(i)) {
return true;
}
}
return false;
}
public static void main(String [] args) {
Scanner sc = new Scanner(System.in);
List<Double> centroids = new ArrayList<>();
String filePath = ("C:\\Users\\mamdo\\eclipse-
workspace\\K_project\\src\\synthetic_control_data.txt");
int n = 6;
for(int i=0;i<n;i++) {
Random r = new Random();
centroids.add((double)r.nextInt(600)+1);
}
System.out.println("Initial Clusters Centroids : " + centroids);
KMeans km = new KMeans();
//km.readData(filePath,n,centroids);
//km.calc();
}
}
.
Java Foundations: Lists, ArrayList<T>
Learn how to use lists in Java, how to use List<T> and ArrayList<T>, how to process lists of elements.
Watch the video lesson and access the hands-on exercises here: https://softuni.org/code-lessons/java-foundations-certification-lists
So Far I have these two classes but I need help with my persontest c.pdf
So Far I have these two classes but I need help with my persontest class:
The next step is to add method calls for the accessor methods after each input:
//Reading and updating values
System.out.print(\"\ Enter Person Name: \");
person1.setPersonName(sc.nextLine());
System.out.println(\"You entered: \" + person1.getPersonName());
Call the accessor function each time you ask for input, after capturing that input. Then repeat for
a second Person, only this time call the constructor that takes the student id as a parameter.
7 import java.util.Scanner;
8
9 class PersonTest
10 {
11 //Main method
12 public static void main(String args[])
13 {
14 Scanner sc = new Scanner(System.in);
15
16 //Creating object
17 Persons_Information person1 = new Persons_Information();
18
19 //Reading and updating values
20 System.out.print(\"\ Enter Person Name: \");
21 person1.setPersonName(sc.nextLine());
22
23 System.out.print(\"\ Enter Current Address: \");
24 person1.setCurrentAdress(sc.nextLine());
25
26 System.out.print(\"\ Enter Permanent Address: \");
27 person1.setpermanentAdress(sc.nextLine());
28
29 System.out.print(\"\ Enter ID number: \");
30 person1.setIdNumber(sc.nextInt());
31
32 sc.nextLine();
33
34 System.out.print(\"\ Enter Birth Date: \");
35 person1.setBirthDate(sc.nextLine());
36
37
38 System.out.print(\"\ Enter Person Age: \");
39 person1.setPersonAge(sc.nextInt());
40
41
42 System.out.print(\"\ Enter Entry Year: \");
43 person1.setEntryYear(sc.nextInt());
44
45
46 System.out.print(\"\ Enter Total Years: \");
47 person1.setTotalYears(sc.nextInt());
48
49 //Printing person 1 details
50 System.out.println(\"\ Person 1: \ \" + person1.toString());
51 }
52 }
Solution
Persons_Information.java
public class Persons_Information {
//Declaring instance variables
private String personName;
private String currentAdress;
private String permanentAdress;
private int idNumber;
private String birthDate;
private int personAge;
private int entryYear;
private int totalYears;
//Zero argumented constructor
public Persons_Information()
{
}
//Parameterized constructor
public Persons_Information(int idNumber) {
this.idNumber = idNumber;
}
//Getters and setters
public String getPersonName() {
return personName;
}
public void setPersonName(String personName) {
this.personName = personName;
}
public String getCurrentAdress() {
return currentAdress;
}
public void setCurrentAdress(String currentAdress) {
this.currentAdress = currentAdress;
}
public String getPermanentAdress() {
return permanentAdress;
}
public void setPermanentAdress(String permanentAdress) {
this.permanentAdress = permanentAdress;
}
public int getIdNumber() {
return idNumber;
}
public void setIdNumber(int idNumber) {
this.idNumber = idNumber;
}
public String getBirthDate() {
return birthDate;
}
public void setBirthDate(String birthDate) {
this.birthDate = birthDate;
}
public int getPersonAge() {
return personAge;
}
public void setPersonAge(int personAge) {
this.personAge = personAge;
}
public int getEntryYe.
How to fix these erros The method sortListltTgt in the.pdf
How to fix these erros
The method sort(List<T>) in the type Collections is not applicable for the arguments
(ArrayList<ApprovedPerson>)
The method sort(List<T>) in the type Collections is not applicable for the arguments
(ArrayList<VaccineBatch>)
import java.io.*;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Scanner;
import java.util.stream.IntStream;
public class VaxProgram {
private ArrayList<Person> plist = new ArrayList<Person>();
private ArrayList<ApprovedPerson> aplist = new ArrayList<ApprovedPerson>();
private ArrayList<VaccineBatch> vblist = new ArrayList<VaccineBatch>();
private ArrayList<FullyVaccinatedPerson> fvlist = new ArrayList<FullyVaccinatedPerson>();
private int initApproved;
/*
vx.loadPersons("persons.txt");
ArrayList<ApprovedPerson> aplist = vx.loadApproved(plist, "approved.txt");
int initApproved = aplist.size();
ArrayList<VaccineBatch> vblist = vx.loadVcBatches("vcbatches.txt");
//3
//3. savdvclist
ArrayList<FullyVaccinatedPerson> fvlist = vx.applyVaxes(aplist, vblist);
*/
public void clearData() {
plist.clear();
aplist.clear();
vblist.clear();
fvlist.clear();
Person.resetId();
}
public ArrayList<Person> loadPersons(String pfile) {
Scanner pscan = null;
ArrayList<Person> plist = new ArrayList<Person>();
try {
pscan = new Scanner(new File(pfile));
while (pscan.hasNext()) {
String[] nextLine = pscan.nextLine().split(" ");
String name = nextLine[0] + " " + nextLine[1];
int age = Integer.parseInt(nextLine[2]);
boolean publish = false;
if (nextLine[3].equals("0"))
publish = false;
else
publish = true;
Person p = new Person(name, age, publish);
plist.add(p);
}
pscan.close();
} catch (IOException e) {
}
return plist;
}
public void loadApproved(String afile) {
final var fileName = "src/cases/" + afile.split("cases/")[1];
try (final var apscan = new Scanner(new File(fileName))) {
while (apscan.hasNext()) {
String apLine = apscan.nextLine();
String[] nextLine = apLine.split(" ");
int id = Integer.parseInt(nextLine[0]);
int foundpos = findPerson(plist, id);//.indexOf(id);//***
if (foundpos >= 0) {
ApprovedPerson ap = new ApprovedPerson(plist.get(foundpos).getAge(),
plist.get(foundpos).getName(), plist.get(foundpos).getPublish(),
plist.get(foundpos).getId());
for (int i = 1; i < nextLine.length; i++)
ap.addComorbidity(nextLine[i]);
aplist.add(ap);
plist.remove(foundpos);
}
}
} catch (FileNotFoundException e) {
System.out.println("There was no file with the name: " + fileName);
}
}
public ArrayList<VaccineBatch> loadVCBatches(String vcfile) throws IOException,
ArrayIndexOutOfBoundsException {
final var fileName = "src/cases/" + vcfile.split("cases/")[1];
Scanner vscan = new Scanner(new File(fileName));
ArrayList<VaccineBatch> vlist = new ArrayList<>();
while (vscan.hasNext()) {
final var fileLine = vscan.nextLine().split("t");
vlist.add(new VaccineBatch(
fileLine[0],
Integer.parseInt(fileLine[1]),
Integer.parseInt(fileLine[3]).
Repeat Programming Project 2 in Chapter 5. This time, add the follow.pdf
Repeat Programming Project 2 in Chapter 5. This time, add the following four constructor
methods: one for each instance variable, one with two parameters for the two instance variables,
and a default constructor. Be sure that each constructor sets all the instance variables. write a
driver program to test each of the methods, including each of the four constructors and at least
one true or false case for each of the test method.
this is the code that i have to add four constructor methods to
import java.util.*;
public class PersonImproved// Counter is the name of the class and i saved it in a file named
PersonImproved.
{
//Data members
private String name;
private int age;
public void readInput()
{
Scanner keyboard = new Scanner(System.in);
System.out.println(\"What is the person\'s name?\");// This gets the program ready for
keyboard input by telling us that there is a new scanner called keyboard, that is accepting user
input.
name = keyboard.nextLine();
System.out.println(\"What is the person\'s age?\");
age = keyboard.nextInt();
while (age < 0)
{
System.out.println(\"Age cannot be negative.\");
System.out.println(\"Reenter age:\");
age = keyboard.nextInt();
}
}
public void writeOutput()
{
System.out.println(\"Name = \" + name);
System.out.println(\"Age = \" + age);
}
//method to set non negative age
public void set(String newName, int newAge)
{
name = newName;
if (newAge >= 0)
age = newAge;
else
{
System.out.println(\"ERROR: Used a negative age.\");
System.exit(0);
}
}
//method to setting name
public void setName(String newName)
{
name = newName;
}
//method to set age
public void setAge(int newAge)
{
if (newAge >= 0)
age = newAge;
else
{
System.out.println(\"ERROR: Used a negative age.\");
System.exit(0);
}
} //to get name
public String getName()
{
return name;
}
public int getAge()
{
return age;
}
/*Boolean tests for if two persons are equal (same name and age), if two persons
have the same name, if two persons have the same age, if one person is older
than another, and if one person is younger than another.*/
public boolean equals(PersonImproved another)
{
return(this.name.equalsIgnoreCase(another.name)
&& this.getAge() == another.getAge());
}
public boolean isSameName(PersonImproved another)
{
return(this.name.equalsIgnoreCase(another.name));
}
public boolean isSameAge(PersonImproved another)
{
return(this.getAge() == another.getAge());
}
public boolean isOlderThan(PersonImproved another)
{
return(this.getAge() > another.getAge());
}
public boolean isYoungerThan(PersonImproved
another)
{
return(this.getAge() < another.getAge());
}
}
and this is the test file
public class PersonCh6Test
{
public static void main(String[] args)
{
System.out.println();
System.out.println(\"Test case 1: default constructor and\");
System.out.println(\"writeOutput() method.\");
System.out.println();
PersonCh6 secretAgent1 = new PersonCh6();
System.out.println(\"Results of default constructor:\");
System.out.println(\"Should be name = \\\"No name\\\" and\");
S.
In Java- Create a Graduate class derived from Student- A graduate has.pdf
In Java:
Create a Graduate class derived from Student. A graduate has an attribute (a String) called
degree, which is either "Masters" or "Doctorate", and a boolean called thesis (meaning whether
they have completed their thesis and initially set to false). Write all methods .
Sort students, undergrads and grads according to ID. Sort Faculty according to Department and
Staff according to Salary.
undergrad.inDownload undergrad.in
graduate.inDownload graduate.in
staff.inDownload staff.in
faculty.in
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Scanner;
public class H9 {
public static void main(String[] args) {
/*******************************
* UNDERGRADUATES
* ***************************/
File inFile = new File("undergrad.in");
Scanner fileInput = null;
try {
fileInput = new Scanner(inFile);
} catch (FileNotFoundException ex) {
//Logger.getLogger(Lab10.class.getName()).log(Level.SEVERE, null, ex);
}
//create an arrayList
ArrayList<Undergraduate> myList = new ArrayList<Undergraduate>();
//input into the ArrayList
while(fileInput.hasNext())
{ int id=fileInput.nextInt();
int lev=fileInput.nextInt();
String name=fileInput.nextLine();
Undergraduate s=new Undergraduate(name, id, lev);
myList.add(s);
}
//sort the arrayList
Collections.sort(myList);
//Output the sorted list
System.out.println("*************************************");
System.out.println("The undergrads sorted according to ID");
System.out.println("*************************************");
for(int i=0; i<myList.size(); i++)
{
myList.get(i).writeOutput();
System.out.println();
}
//close the input file
fileInput.close();
/*******************************
* GRADUATES
* ***************************/
inFile = new File("graduate.in");
try {
fileInput = new Scanner(inFile);
} catch (FileNotFoundException ex) {
//Logger.getLogger(Lab10.class.getName()).log(Level.SEVERE, null, ex);
}
//create an arrayList
ArrayList<Graduate> myList2 = new ArrayList<Graduate>();
//input into the ArrayList
while(fileInput.hasNext())
{ int id=fileInput.nextInt();
String lev=fileInput.next();
String thesis=fileInput.next();
boolean t;
if(thesis.equals("yes")) t=true; else t=false;
String name=fileInput.nextLine();
Graduate s=new Graduate(name, id, lev, t);
myList2.add(s);
}
//sort the arrayList
Collections.sort(myList2);
//Output the sorted list
System.out.println("*************************************");
System.out.println("The grads sorted according to ID");
System.out.println("*************************************");
for(int i=0; i<myList2.size(); i++)
{
myList2.get(i).writeOutput();
System.out.println();
}
//close the input file
fileInput.close();
/*******************************
* Faculty
* ***************************/
inFile = new File("faculty.in");
try {
fileInput = new Scanner(inFile);
} catch (FileNotFoundException ex) {
//Logger.getLogger(Lab10.class.getName()).log(Level.SEVERE, null, ex);
}
//create an arrayList
ArrayLis.
FNT 2015 PDIS CodeEU - Zanimljiva informatika - 02 Djordje Pavlovic - Live_ch...
FNT 2015 PDIS CodeEU - Zanimljiva informatika - 02 Djordje Pavlovic - Live_ch...Педагошко друштво информатичара Србије
Forum naprednih tehnologija, Niš 2015, Evropska nedelja programiranja (codeEU, CodeWeekEU), Otvoreni čas programiranja - Zanimljiva informatika - PDIS Oni su deo budućnosti Elektronski fakultet, Niš sreda 14.10.2015.godine define a class name Employee whose objects are records for employee..pdf
define a class name Employee whose objects are records for employee. Derive this class from the
class person given in the listing 8.1. An employee record inherits an employee\'s name from the
class Person. In addition, an employee record contains an annual salary represented as a single
value of type double, a hire date that gives the year hired as a single value of type int, and an
identification number that is a value of type String. Give your class a reasonable complement of
constructors, accessor methods, and mutator methods, as well as an equals method. Write a
program to fully test your class definition
this is the test file
import java.util.*;
public class EmployeeTest
{
public static void main(String[] args)
{
Scanner keyboard = new Scanner(System.in);
char repeat;
do // repeat if user says \'yes\'
{
// Test the nine constructors (uses writeOutput method)
Employee e1 = new Employee(); // default constructor
System.out.println(\"Using default constructor:\");
e1.writeOutput();
System.out.println();
System.out.println(\"===============================\");
Employee e2 = new Employee(\"Mondo Kane\");
System.out.println(\"Using constructor with just name:\");
e2.writeOutput();
System.out.println();
System.out.println(\"===============================\");
Employee e3 = new Employee(\"Fleetis Pascal\", 111111.11);
System.out.println(\"Constructor with name & salary :\");
e3.writeOutput();
System.out.println();
System.out.println(\"===============================\");
Employee e4 = new Employee(\"Carl Wolf\", 1968);
System.out.println(\"Constructor with name and hire date:\");
e4.writeOutput();
System.out.println();
System.out.println(\"===============================\");
Employee e5 = new Employee(\"Sharon Kelly\", \"123-45-6789\");
System.out.println(\"Constructor with name and ssn:\");
e5.writeOutput();
System.out.println();
System.out.println(\"===============================\");
Employee e6 = new Employee(\"Joann Rousch\", 333333.33, 1963);
System.out.println(\"Constructor with name, salary & hire date:\");
e6.writeOutput();
System.out.println();
System.out.println(\"===============================\");
Employee e7 = new Employee(\"Lucy Sharp\", 444444.44, \"987-65-4321\");
System.out.println(\"Constructor with name, salary & ssn:\");
e7.writeOutput();
System.out.println();
System.out.println(\"===============================\");
Employee e8 = new Employee(\"Pierre Sokolskis\", 1964, \"999-99-9999\");
System.out.println(\"Constructor with name, hire date & ssn:\");
e8.writeOutput();
System.out.println();
System.out.println(\"===============================\");
Employee e9 = new Employee(\"Last One\", 555.55, 1999,
\"888-88-8888\");
System.out.println(\"Constructor with name, salary, hire date, and ssn:\");
e9.writeOutput();
System.out.println();
System.out.println(\"===============================\");
// Test methods to change, return and write values
// change all
System.out.println(\"Before:\");
e9.writeOutput();
System.out.println();
Sy.
Quiz Question 1 (2 points) Which of the following is true about data.pdf
Question 3 (6 points) Figure 2. This diagram represents the food web of a conservation area in
central Africa based on data collected from 2003 to 2013 . The arrows represent feeding
interactions and point towards the consumer. Thicker arrows means more frequent consumption
by the consumer. For each statement, select TRUE (1) if it is consistent with the food web
presented above, or FALSE (2) if it is not consistent with the food web. For each statement,
select TRUE (1) if it is consistent with the food web presented above, or FALSE (2) If It is not
consistent with the food web. If a flood removed 50% of ants, then the biomass of pheasants
would also decrease by 50% . Assume pheasants are not directly affected by flooding. A drastic
reduction in the number of snakes due to wildfires would strongly affect mice in this ecosystem,
Assume mice are not directly affected by wildfires. If a pesticide was applied to gourds and
started to bioaccumulate in them, 1. TRUE biomagnification would result in high 2. FALSE
concentrations of the pesticide in wild dogs. Ants and mice may be competing for tulips. If
poaching by humans removed many elephants, then the number of wild dogs and lions would
decrease. Reducing the number of species in this food web would likely increase the amount of
time it takes this food web to recover from perturbation..
Refer to Question 10 in Chapter 17 of the textbook- How is the use of.pdf
Question 4: Assume a bank is in the process of restructuring a $4 million dollar non-amortizing
loan that has a liquidation value of $2.5 million dollars.
The terms of the restructured loan are as follows:
The interest rate on the new restructured loan will be 3% over the next 5 years.
Interest payments will be made at the end of each year for years 1 through 5.
There will be no principal payments in years 1 and 2, but there will be a principal payment in
year 3 of $1M and in years 4 and 5 there will be principal payments of $1.5M in each year. The
principal payments will be made at the end of each year.
The cost of raising funds for the bank is 12%
Part A: What is the present value fo the restructured loan? Input your answer in the
X,XXX,XXX format. Do not include cents, round up to the whole dollar.
Part B: Should the bank restructure the loan? Input your answer as either Yes or No.
More Related Content
Similar to Edit the Personjava file so that the natural ordering or a .pdf
import java-util-ArrayList- import java-util-Collections- import java-.pdf
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import static java.lang.System.out;
public class homework {
public static void main(String[] args) {
List<Integer> list = new ArrayList<>();
for (int i = 0; i < 10; i++)
list.add(int) (Math.random()* 10) + 1);
Collections.sort(list);
System.out.println("The list id : " + list);
int index =linearSearch(list, 10);
if (index >+ 0)
System.out.println("Linear search: the number 5 was found at index " + index);
else
System.out.println("Linear search: the number 5 is not found ");
List<String> names = new ArrayList<>();
names.add("Tyson");
names.add("John");
names.add("Edgar");
names.add("LouLou");
Collections.sort(list);
System.out.println("The names are : " + names);
index = linearSearch(names, "JOhn");
if (index >= 0)
System.out.println("Linear search: Edgar was found at index " + names);
else
System.out.println("Linear search: Edgar is not found" + names);
}
public static <E> int linearSearch(List<E> lsit, E data) {
for (int i = 0; i < list.size(); i++)
if (list.get(i).equals(data))
return i;
return -1;
}
}
Chapter 14 - Linear Search and Binary Search - Assignment Due Wednesday by 11:59pm P
Points 100 Submitting a text entry box or a file upload Allowed Attempts 1 Available until Mar
1 at 11:59pm Modify the binarySearch method shown in the video lecture so that it's generic.
Test it with at least two types to make sure it works. Hint 1: Examine the review problem and its
solution, which modifies the linear search algorithm in the same way. Hint 2: Your binarySearch
method signature should be: "private static < E extends Comparable > boolean binarySearch(List
list, E data): Turn in the following, - The source files (no zip file, just the individual java files). -
A screen shot of your program in action. It should show the result of the test run.
.
Here is my code for a linefile editor import java.io.BufferedRea.pdf
Here is my code for a line/file editor:
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
public class FileEdit {
public static List lines = new ArrayList();
public static void main(String[] args) throws IOException
{
Scanner s = new Scanner(System.in);
System.out.print("EDIT: ");
String fileName = s.nextLine();
BufferedReader br = new BufferedReader(new FileReader(new File(fileName)));
String str="";
int count=0;
while((str=br.readLine())!=null)
{
lines.add(count, str);
System.out.println((++count) + "> "+ str);
}
String text="";
String command = "";
System.out.print((++count)+"> ");
command=s.nextLine();
String commandArr[];
int flag;
while(!command.equals("E"))
{
flag=0;
commandArr = command.split("\\s");
if(commandArr[0].equals("I")) //Insertion
{
while(true)
{
if(commandArr.length==1&&flag!=2)
{
System.out.print((count)+"> ");
text = s.nextLine();
insertLine(text,count-1);
}
else if(commandArr.length==2&&flag!=2)
{
System.out.print((commandArr[1])+"> ");
count=Integer.parseInt(commandArr[1]);
text = s.nextLine();
insertLine(text,Integer.parseInt(commandArr[1])-1);
}
else
insertLine(text,count-1);
System.out.print((++count)+"> ");
command=s.nextLine();
commandArr = command.split("\\s");
if(commandArr[0].equals("I")||commandArr[0].equals("L")||commandArr[0].equals("D")||comm
andArr[0].equals("E"))
{
flag=1;
break;
}
else
{
flag=2;
text=command;
}
}
}
else if(commandArr[0].equals("L")) //Listing
{
printList();
}
else if(commandArr[0].equals("D")) //Deletion
{
if(commandArr.length==1)
{
deleteLine(count-1,count-1);
}
else if(commandArr.length==2)
{
deleteLine(Integer.parseInt(commandArr[1])-1,Integer.parseInt(commandArr[1])-1);
}
else if(commandArr.length==3)
{
deleteLine(Integer.parseInt(commandArr[1])-1,Integer.parseInt(commandArr[2])-1);
}
count=lines.size();
}
if(flag!=1)
{
System.out.print((count++)+"> ");
command = s.nextLine();
}
}
}
public static void insertLine(String text,int count)
{
if (count >= lines.size()) {
for(int i = lines.size(); i <= count; i++) {
lines.add(null);
}
}
lines.set(count,text);
}
public static void deleteLine(int start,int end)
{
for(int i=start;i<=end;i++)
lines.remove(i);
}
public static void printList()
{
for(int i=0;i "+lines.get(i));
}
}
Here is my output:
EDIT: textin.txt
1> The First Line
1>
2> And another line
3> I 3
3> The second line
4> One more line
5> L
1> null
2> null
3> The second line
4> One more line
5> D 2
3> L
1> null
2> The second line
3> One more line
4> E
How can I keep it from printing "null" after ">" and it just be blank. I need the output to look like
this:
1> The first line
2>
3> And another line
4> I 3
3> The second line
4> One more line
5> L
1> The first line
2>
3> The second line
4> One more line
5> And another line
5> D 2
4> L
1> The first line
2> The second line
3> One more line
4> And another line
5> E.
1. Section1.- Populating the list of persons on the person listing f.pdf
1. Section1.- Populating the list of persons on the person listing form, and put functionality in the
Add Person button (1 mark)
a. In PersonListing: The starting code places only one item in the list of persons. Discussions
with the original developer have yielded that the method showTable in PersonListing is
responsible for populating the table. The addToTable method which accepts one person and adds
information regarding that person to the table should NOT be modified. Complete showTable so
that an entry is placed in the table for each row in the file person.dat.
b. In PersonEntry: Modify PersonEntry so that it is able to store an instance of PersonListing.
c. In PersonEntry: Modify the Constructor of PersonEntry so that it accepts an instance of
PersonListing, and then sets the local instance variable to the value accepted by the constructor.
d. In PersonListing: Add a listener to the Add Person button so that when it is clicked, an
instance of PersonEntry is displayed. When invoking the instance of PersonEntry, a reference to
the current instance of PersonListing should be passed as an argument to the constructor. //Hint a
listener is already included in the starting code that adds functionality to the Close button.
2. Section 2. Implementing functionality in the PersonEntry. (1.5 marks)
a. Modify the PersonEntry object so that the interface looks like that presented in Figure 3
Hints:
i. You may need to add a JLabel and a JCheckBox
ii. The layout from the previous developer for the panel displays data on two rows.
b. Add functionality to the Close button of the PersonEntry form so that it is no longer visible
when it is clicked.
Hint: one way to do it is to
i. Store a reference to a PersonEntry as an instance variable
ii. Set the instance of PersonEntry to this in the constructor
iii. In the appropriate listener, invoke setVisible on the instance of PersonEntry with an
argument of false.
c. Implement functionality in the Save button of PersonEntry so that when it is clicked, the data
is first validated to ensure both first and last names have been entered, and that the age is
an integer. If data is valid, the addPerson method of PersonListing is called, and the person
entry form disappears. Note that the addPerson method effectively adds a person to
the arraylist holding person list data, and updates the data in the list.
Hints/Questions
i. Have we already met a method to split a string into parts?
ii. What functionality can tell if a value can be converted to an Integer?
iii. Remember the getText() method of a jTextField returns the value of the text it currently
displays.
3. Section 3 Complete functionality on listing screen (1.5 marks)
a. The starting code includes the definition of a JButton named cmdSortAge, but it is not
shown on the PersonListing screen. Modify the PersonListingScreen to allow it to be shown
b. Add a listener which implements the functionality to sort the list in ascending order of age.
Hints:
i. You should alrea.
1. Section1.- Populating the list of persons on the person listing.pdf
1. Section1.- Populating the list of persons on the person listing form, and put functionality in the
Add Person button (1 mark)
a. In PersonListing: The starting code places only one item in the list of persons. Discussions
with the original developer have yielded that the method showTable in PersonListing is
responsible for populating the table. The addToTable method which accepts one person and adds
information regarding that person to the table should NOT be modified. Complete showTable so
that an entry is placed in the table for each row in the file person.dat.
b. In PersonEntry: Modify PersonEntry so that it is able to store an instance of PersonListing.
c. In PersonEntry: Modify the Constructor of PersonEntry so that it accepts an instance of
PersonListing, and then sets the local instance variable to the value accepted by the constructor.
d. In PersonListing: Add a listener to the Add Person button so that when it is clicked, an
instance of PersonEntry is displayed. When invoking the instance of PersonEntry, a reference to
the current instance of PersonListing should be passed as an argument to the constructor. //Hint a
listener is already included in the starting code that adds functionality to the Close button.
2. Section 2. Implementing functionality in the PersonEntry. (1.5 marks)
a. Modify the PersonEntry object so that the interface looks like that presented in Figure 3
Hints:
i. You may need to add a JLabel and a JCheckBox
ii. The layout from the previous developer for the panel displays data on two rows.
b. Add functionality to the Close button of the PersonEntry form so that it is no longer visible
when it is clicked.
Hint: one way to do it is to
i. Store a reference to a PersonEntry as an instance variable
ii. Set the instance of PersonEntry to this in the constructor
iii. In the appropriate listener, invoke setVisible on the instance of PersonEntry with an argument
of false.
c. Implement functionality in the Save button of PersonEntry so that when it is clicked, the data
is first validated to ensure both first and last names have been entered, and that the age is an
integer. If data is valid, the addPerson method of PersonListing is called, and the person entry
form disappears. Note that the addPerson method effectively adds a person to the arraylist
holding person list data, and updates the data in the list.
Hints/Questions
i. Have we already met a method to split a string into parts?
ii. What functionality can tell if a value can be converted to an Integer?
iii. Remember the getText() method of a jTextField returns the value of the text it currently
displays.
3. Section 3 Complete functionality on listing screen (1.5 marks)
a. The starting code includes the definition of a JButton named cmdSortAge, but it is not shown
on the PersonListing screen. Modify the PersonListingScreen to allow it to be shown
b. Add a listener which implements the functionality to sort the list in ascending order of age.
Hints:
i. You should alrea.
Create a text file that contains ten person objects where each object.docx
Create a text file that contains ten person objects where each object is represented on a separated line with each attribute separated by a comma. Create a method that reads form the file, creates one person object per line, and stores the object in an Array List object. Write the stored objects out by last name of the console.
Solution
//Program
package person;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.util.ArrayList;
import java.util.Scanner;
//person class
class Person
{
String lastname;
String firstname;
int age;
public Person(String last, String first, int a)
{
firstname=first;
lastname=last;
age=a;
}
@Override
public String toString()
{
return (lastname+\" \"+firstname+\" \"+age);
}
}
public class PersonDemo {
public static void main(String[] args) throws FileNotFoundException {
//creating array list
ArrayList <Person> persons=new ArrayList<>();
//reading person data file
Scanner infile=new Scanner(new FileReader(\"person.txt\"));
while(infile.hasNextLine())
{
String words[]=infile.nextLine().split(\",\");
persons.add(new Person(words[0],words[1],Integer.parseInt(words[2])));
}
//display person s details
System.out.println(\"Person details: \");
for(int i=0;i<persons.size();i++)
{
System.out.println(persons.get(i).toString());
}
}
}
///////////////////////////////////////////////////////////////////
//person.txt input file
Joseph,Daniel,23
Jhon,Stephen,34
Joseph,Maria,25
Fernandez,George,67
Jaitely,Arun,29
Kumar,Narendra,50
Victor,Prince,40
George,Jincy,35
Roldan,Tinu,28
Antony,Tim,27
.
Change the code in Writer.java only to get it working. Must contain .pdf
Change the code in Writer.java only to get it working. Must contain methods: logReverse() ,
logMax(), logDuplicates(),
This lab is going to focus on File Output, which you will find is somewhat similar to console
output.
FileMain.java
import java.io.IOException;
import java.util.ArrayList;
import java.util.Scanner;
public class FileMain {
public static void main(String[] args) throws IOException{
Scanner scnr = new Scanner(System.in);
System.out.print("Please enter the name of the file you would like to read: ");
String fileName = scnr.next();
Reader reader = new Reader();
ArrayList fileContents = reader.getFileContents(fileName);
System.out.println("Please enter a name for your new file: ");
String newFileName = scnr.next();
Writer fileOut = new Writer(newFileName);
fileOut.logReverse(fileContents);
fileOut.logMax(fileContents);
fileOut.logDuplicates(fileContents);
fileOut.closeWriter();
scnr.close();
}
}
Filetester.java
import java.io.IOException;
import java.util.ArrayList;
public class FileTester {
public static boolean testLogReverse(ArrayList contents) throws IOException {
Writer writer = new Writer("logReverseTest.txt");
writer.logReverse(contents);
writer.closeWriter();
ArrayList expected = new ArrayList();
expected.add("Reversed file contents: ");
expected.add("58");
expected.add("12");
expected.add("19");
expected.add("42");
expected.add("12");
expected.add("End of file.");
Reader testReader = new Reader();
ArrayList result = testReader.getFileContents("logReverseTest.txt");
if(expected.equals(result)) return true;
else return false;
}
public static boolean testLogMax(ArrayList contents) throws IOException {
Writer writer = new Writer("logMaxTest.txt");
writer.logMax(contents);
writer.closeWriter();
ArrayList expected = new ArrayList();
expected.add("The largest number in the file is: 58");
expected.add("End of file.");
Reader testReader = new Reader();
ArrayList result = testReader.getFileContents("logMaxTest.txt");
if(expected.equals(result)) return true;
else return false;
}
public static boolean testLogDuplicates(ArrayList contents) throws IOException {
Writer writer = new Writer("logDuplicatesTest.txt");
writer.logDuplicates(contents);
writer.closeWriter();
ArrayList expected = new ArrayList();
expected.add("Duplicates found: true");
expected.add("End of file.");
Reader testReader = new Reader();
ArrayList result = testReader.getFileContents("logDuplicatesTest.txt");
if(expected.equals(result)) return true;
else return false;
}
public static void main(String[] args) throws IOException {
Reader reader = new Reader();
ArrayList fileContents = reader.getFileContents("nums.txt");
System.out.println("logReverse test passed? " + testLogReverse(fileContents));
System.out.println("logMax test passed? " + testLogMax(fileContents));
System.out.println("logDuplicates test passed? " + testLogDuplicates(fileContents));
}
}
Reader.java
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Sca.
Please help me with a UML class diagram for the following code im.pdf
Please help me with a UML class diagram for the following code:
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
public class FileEdit {
public static List lines = new ArrayList();
public static void main(String[] args) throws IOException
{
Scanner s = new Scanner(System.in);
System.out.print("EDIT: ");
String fileName = s.nextLine();
BufferedReader br = new BufferedReader(new FileReader(new File(fileName)));
String str="";
int count=0;
while((str=br.readLine())!=null)
{
lines.add(count, str);
System.out.println((++count) + "> "+ str);
}
String text="";
String command = "";
System.out.print((++count)+"> ");
command=s.nextLine();
String commandArr[];
int flag;
while(!command.equals("E"))
{
flag=0;
commandArr = command.split("\\s");
if(commandArr[0].equals("I")) //Insertion
{
while(true)
{
if(commandArr.length==1&&flag!=2)
{
System.out.print((count)+"> ");
text = s.nextLine();
insertLine(text,count-1);
}
else if(commandArr.length==2&&flag!=2)
{
System.out.print((commandArr[1])+"> ");
count=Integer.parseInt(commandArr[1]);
text = s.nextLine();
insertLine(text,Integer.parseInt(commandArr[1])-1);
}
else
insertLine(text,count-1);
System.out.print((++count)+"> ");
command=s.nextLine();
commandArr = command.split("\\s");
if(commandArr[0].equals("I")||commandArr[0].equals("L")||commandArr[0].equals("D")||comm
andArr[0].equals("E"))
{
flag=1;
break;
}
else
{
flag=2;
text=command;
}
}
}
else if(commandArr[0].equals("L")) //Listing
{
printList();
}
else if(commandArr[0].equals("D")) //Deletion
{
if(commandArr.length==1)
{
deleteLine(count-1,count-1);
}
else if(commandArr.length==2)
{
deleteLine(Integer.parseInt(commandArr[1])-1,Integer.parseInt(commandArr[1])-1);
}
else if(commandArr.length==3)
{
deleteLine(Integer.parseInt(commandArr[1])-1,Integer.parseInt(commandArr[2])-1);
}
count=lines.size();
}
if(flag!=1)
{
System.out.print((count++)+"> ");
command = s.nextLine();
}
}
}
public static void insertLine(String text,int count)
{
if (count >= lines.size()) {
for(int i = lines.size(); i <= count; i++) {
lines.add(null);
}
}
lines.set(count,text);
}
public static void deleteLine(int start,int end)
{
for(int i=start;i<=end;i++)
lines.remove(i);
}
public static void printList()
{
for(int i=0;i "+lines.get(i));
}
}.
Please I am trying to get this code to output in -txt file- I need you.pdf
Please I am trying to get this code to output in .txt file:
I need your help:
import java.io.File; // Import the File class
import java.io.FileNotFoundException; // Import this class to handle errors
// Import the Scanner class to read text files
import java.util.*;
import java.io.*;
public class KMeans {
List<double []> clusterCentroids;
Map<Integer,List<Double>> dataMatrix;
List<double[]> data;
Integer numClusters;
public void writeFile(List<Double> value, File filename) {
try {
FileWriter myWriter = new FileWriter(filename);
myWriter.write(value.toString());
myWriter.close();
System.out.println("Successfully wrote to the file.");
} catch (IOException e) {
System.out.println("An error occurred.");
e.printStackTrace();
}
}
public KMeans() {
data = new ArrayList<double []>();
dataMatrix = new LinkedHashMap<>();
}
void readData(String filePath, int n, List<Double> c) {
numClusters = n;
try {
BufferedReader br = new BufferedReader(new FileReader(new File(filePath)));
String line;
int i = 0;
while((line = br.readLine()) != null) {
String [] elem = line.split("\\s+");
int j = 0;
for(String d : elem) {
if(isCentroid(j, c)) {
this.clusterCentroids.get(i)[j] = ((Double.valueOf(d)));
}
//data.get(i)[j] = ((Double.valueOf(d)));
System.out.println(data.get(j)[i]);
}
System.out.println();
i++;
}
br.close();
} catch (IOException ex) {
ex.printStackTrace();
}
}
private boolean isCentroid(int j, List<Double> c) {
for(int i = 0; i < c.size(); i++) {
if(j == c.get(i)) {
return true;
}
}
return false;
}
public static void main(String [] args) {
Scanner sc = new Scanner(System.in);
List<Double> centroids = new ArrayList<>();
String filePath = ("C:\\Users\\mamdo\\eclipse-
workspace\\K_project\\src\\synthetic_control_data.txt");
int n = 6;
for(int i=0;i<n;i++) {
Random r = new Random();
centroids.add((double)r.nextInt(600)+1);
}
System.out.println("Initial Clusters Centroids : " + centroids);
KMeans km = new KMeans();
//km.readData(filePath,n,centroids);
//km.calc();
}
}
.
Java Foundations: Lists, ArrayList<T>
Learn how to use lists in Java, how to use List<T> and ArrayList<T>, how to process lists of elements.
Watch the video lesson and access the hands-on exercises here: https://softuni.org/code-lessons/java-foundations-certification-lists
So Far I have these two classes but I need help with my persontest c.pdf
So Far I have these two classes but I need help with my persontest class:
The next step is to add method calls for the accessor methods after each input:
//Reading and updating values
System.out.print(\"\ Enter Person Name: \");
person1.setPersonName(sc.nextLine());
System.out.println(\"You entered: \" + person1.getPersonName());
Call the accessor function each time you ask for input, after capturing that input. Then repeat for
a second Person, only this time call the constructor that takes the student id as a parameter.
7 import java.util.Scanner;
8
9 class PersonTest
10 {
11 //Main method
12 public static void main(String args[])
13 {
14 Scanner sc = new Scanner(System.in);
15
16 //Creating object
17 Persons_Information person1 = new Persons_Information();
18
19 //Reading and updating values
20 System.out.print(\"\ Enter Person Name: \");
21 person1.setPersonName(sc.nextLine());
22
23 System.out.print(\"\ Enter Current Address: \");
24 person1.setCurrentAdress(sc.nextLine());
25
26 System.out.print(\"\ Enter Permanent Address: \");
27 person1.setpermanentAdress(sc.nextLine());
28
29 System.out.print(\"\ Enter ID number: \");
30 person1.setIdNumber(sc.nextInt());
31
32 sc.nextLine();
33
34 System.out.print(\"\ Enter Birth Date: \");
35 person1.setBirthDate(sc.nextLine());
36
37
38 System.out.print(\"\ Enter Person Age: \");
39 person1.setPersonAge(sc.nextInt());
40
41
42 System.out.print(\"\ Enter Entry Year: \");
43 person1.setEntryYear(sc.nextInt());
44
45
46 System.out.print(\"\ Enter Total Years: \");
47 person1.setTotalYears(sc.nextInt());
48
49 //Printing person 1 details
50 System.out.println(\"\ Person 1: \ \" + person1.toString());
51 }
52 }
Solution
Persons_Information.java
public class Persons_Information {
//Declaring instance variables
private String personName;
private String currentAdress;
private String permanentAdress;
private int idNumber;
private String birthDate;
private int personAge;
private int entryYear;
private int totalYears;
//Zero argumented constructor
public Persons_Information()
{
}
//Parameterized constructor
public Persons_Information(int idNumber) {
this.idNumber = idNumber;
}
//Getters and setters
public String getPersonName() {
return personName;
}
public void setPersonName(String personName) {
this.personName = personName;
}
public String getCurrentAdress() {
return currentAdress;
}
public void setCurrentAdress(String currentAdress) {
this.currentAdress = currentAdress;
}
public String getPermanentAdress() {
return permanentAdress;
}
public void setPermanentAdress(String permanentAdress) {
this.permanentAdress = permanentAdress;
}
public int getIdNumber() {
return idNumber;
}
public void setIdNumber(int idNumber) {
this.idNumber = idNumber;
}
public String getBirthDate() {
return birthDate;
}
public void setBirthDate(String birthDate) {
this.birthDate = birthDate;
}
public int getPersonAge() {
return personAge;
}
public void setPersonAge(int personAge) {
this.personAge = personAge;
}
public int getEntryYe.
How to fix these erros The method sortListltTgt in the.pdf
How to fix these erros
The method sort(List<T>) in the type Collections is not applicable for the arguments
(ArrayList<ApprovedPerson>)
The method sort(List<T>) in the type Collections is not applicable for the arguments
(ArrayList<VaccineBatch>)
import java.io.*;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Scanner;
import java.util.stream.IntStream;
public class VaxProgram {
private ArrayList<Person> plist = new ArrayList<Person>();
private ArrayList<ApprovedPerson> aplist = new ArrayList<ApprovedPerson>();
private ArrayList<VaccineBatch> vblist = new ArrayList<VaccineBatch>();
private ArrayList<FullyVaccinatedPerson> fvlist = new ArrayList<FullyVaccinatedPerson>();
private int initApproved;
/*
vx.loadPersons("persons.txt");
ArrayList<ApprovedPerson> aplist = vx.loadApproved(plist, "approved.txt");
int initApproved = aplist.size();
ArrayList<VaccineBatch> vblist = vx.loadVcBatches("vcbatches.txt");
//3
//3. savdvclist
ArrayList<FullyVaccinatedPerson> fvlist = vx.applyVaxes(aplist, vblist);
*/
public void clearData() {
plist.clear();
aplist.clear();
vblist.clear();
fvlist.clear();
Person.resetId();
}
public ArrayList<Person> loadPersons(String pfile) {
Scanner pscan = null;
ArrayList<Person> plist = new ArrayList<Person>();
try {
pscan = new Scanner(new File(pfile));
while (pscan.hasNext()) {
String[] nextLine = pscan.nextLine().split(" ");
String name = nextLine[0] + " " + nextLine[1];
int age = Integer.parseInt(nextLine[2]);
boolean publish = false;
if (nextLine[3].equals("0"))
publish = false;
else
publish = true;
Person p = new Person(name, age, publish);
plist.add(p);
}
pscan.close();
} catch (IOException e) {
}
return plist;
}
public void loadApproved(String afile) {
final var fileName = "src/cases/" + afile.split("cases/")[1];
try (final var apscan = new Scanner(new File(fileName))) {
while (apscan.hasNext()) {
String apLine = apscan.nextLine();
String[] nextLine = apLine.split(" ");
int id = Integer.parseInt(nextLine[0]);
int foundpos = findPerson(plist, id);//.indexOf(id);//***
if (foundpos >= 0) {
ApprovedPerson ap = new ApprovedPerson(plist.get(foundpos).getAge(),
plist.get(foundpos).getName(), plist.get(foundpos).getPublish(),
plist.get(foundpos).getId());
for (int i = 1; i < nextLine.length; i++)
ap.addComorbidity(nextLine[i]);
aplist.add(ap);
plist.remove(foundpos);
}
}
} catch (FileNotFoundException e) {
System.out.println("There was no file with the name: " + fileName);
}
}
public ArrayList<VaccineBatch> loadVCBatches(String vcfile) throws IOException,
ArrayIndexOutOfBoundsException {
final var fileName = "src/cases/" + vcfile.split("cases/")[1];
Scanner vscan = new Scanner(new File(fileName));
ArrayList<VaccineBatch> vlist = new ArrayList<>();
while (vscan.hasNext()) {
final var fileLine = vscan.nextLine().split("t");
vlist.add(new VaccineBatch(
fileLine[0],
Integer.parseInt(fileLine[1]),
Integer.parseInt(fileLine[3]).
Repeat Programming Project 2 in Chapter 5. This time, add the follow.pdf
Repeat Programming Project 2 in Chapter 5. This time, add the following four constructor
methods: one for each instance variable, one with two parameters for the two instance variables,
and a default constructor. Be sure that each constructor sets all the instance variables. write a
driver program to test each of the methods, including each of the four constructors and at least
one true or false case for each of the test method.
this is the code that i have to add four constructor methods to
import java.util.*;
public class PersonImproved// Counter is the name of the class and i saved it in a file named
PersonImproved.
{
//Data members
private String name;
private int age;
public void readInput()
{
Scanner keyboard = new Scanner(System.in);
System.out.println(\"What is the person\'s name?\");// This gets the program ready for
keyboard input by telling us that there is a new scanner called keyboard, that is accepting user
input.
name = keyboard.nextLine();
System.out.println(\"What is the person\'s age?\");
age = keyboard.nextInt();
while (age < 0)
{
System.out.println(\"Age cannot be negative.\");
System.out.println(\"Reenter age:\");
age = keyboard.nextInt();
}
}
public void writeOutput()
{
System.out.println(\"Name = \" + name);
System.out.println(\"Age = \" + age);
}
//method to set non negative age
public void set(String newName, int newAge)
{
name = newName;
if (newAge >= 0)
age = newAge;
else
{
System.out.println(\"ERROR: Used a negative age.\");
System.exit(0);
}
}
//method to setting name
public void setName(String newName)
{
name = newName;
}
//method to set age
public void setAge(int newAge)
{
if (newAge >= 0)
age = newAge;
else
{
System.out.println(\"ERROR: Used a negative age.\");
System.exit(0);
}
} //to get name
public String getName()
{
return name;
}
public int getAge()
{
return age;
}
/*Boolean tests for if two persons are equal (same name and age), if two persons
have the same name, if two persons have the same age, if one person is older
than another, and if one person is younger than another.*/
public boolean equals(PersonImproved another)
{
return(this.name.equalsIgnoreCase(another.name)
&& this.getAge() == another.getAge());
}
public boolean isSameName(PersonImproved another)
{
return(this.name.equalsIgnoreCase(another.name));
}
public boolean isSameAge(PersonImproved another)
{
return(this.getAge() == another.getAge());
}
public boolean isOlderThan(PersonImproved another)
{
return(this.getAge() > another.getAge());
}
public boolean isYoungerThan(PersonImproved
another)
{
return(this.getAge() < another.getAge());
}
}
and this is the test file
public class PersonCh6Test
{
public static void main(String[] args)
{
System.out.println();
System.out.println(\"Test case 1: default constructor and\");
System.out.println(\"writeOutput() method.\");
System.out.println();
PersonCh6 secretAgent1 = new PersonCh6();
System.out.println(\"Results of default constructor:\");
System.out.println(\"Should be name = \\\"No name\\\" and\");
S.
In Java- Create a Graduate class derived from Student- A graduate has.pdf
In Java:
Create a Graduate class derived from Student. A graduate has an attribute (a String) called
degree, which is either "Masters" or "Doctorate", and a boolean called thesis (meaning whether
they have completed their thesis and initially set to false). Write all methods .
Sort students, undergrads and grads according to ID. Sort Faculty according to Department and
Staff according to Salary.
undergrad.inDownload undergrad.in
graduate.inDownload graduate.in
staff.inDownload staff.in
faculty.in
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Scanner;
public class H9 {
public static void main(String[] args) {
/*******************************
* UNDERGRADUATES
* ***************************/
File inFile = new File("undergrad.in");
Scanner fileInput = null;
try {
fileInput = new Scanner(inFile);
} catch (FileNotFoundException ex) {
//Logger.getLogger(Lab10.class.getName()).log(Level.SEVERE, null, ex);
}
//create an arrayList
ArrayList<Undergraduate> myList = new ArrayList<Undergraduate>();
//input into the ArrayList
while(fileInput.hasNext())
{ int id=fileInput.nextInt();
int lev=fileInput.nextInt();
String name=fileInput.nextLine();
Undergraduate s=new Undergraduate(name, id, lev);
myList.add(s);
}
//sort the arrayList
Collections.sort(myList);
//Output the sorted list
System.out.println("*************************************");
System.out.println("The undergrads sorted according to ID");
System.out.println("*************************************");
for(int i=0; i<myList.size(); i++)
{
myList.get(i).writeOutput();
System.out.println();
}
//close the input file
fileInput.close();
/*******************************
* GRADUATES
* ***************************/
inFile = new File("graduate.in");
try {
fileInput = new Scanner(inFile);
} catch (FileNotFoundException ex) {
//Logger.getLogger(Lab10.class.getName()).log(Level.SEVERE, null, ex);
}
//create an arrayList
ArrayList<Graduate> myList2 = new ArrayList<Graduate>();
//input into the ArrayList
while(fileInput.hasNext())
{ int id=fileInput.nextInt();
String lev=fileInput.next();
String thesis=fileInput.next();
boolean t;
if(thesis.equals("yes")) t=true; else t=false;
String name=fileInput.nextLine();
Graduate s=new Graduate(name, id, lev, t);
myList2.add(s);
}
//sort the arrayList
Collections.sort(myList2);
//Output the sorted list
System.out.println("*************************************");
System.out.println("The grads sorted according to ID");
System.out.println("*************************************");
for(int i=0; i<myList2.size(); i++)
{
myList2.get(i).writeOutput();
System.out.println();
}
//close the input file
fileInput.close();
/*******************************
* Faculty
* ***************************/
inFile = new File("faculty.in");
try {
fileInput = new Scanner(inFile);
} catch (FileNotFoundException ex) {
//Logger.getLogger(Lab10.class.getName()).log(Level.SEVERE, null, ex);
}
//create an arrayList
ArrayLis.
FNT 2015 PDIS CodeEU - Zanimljiva informatika - 02 Djordje Pavlovic - Live_ch...
FNT 2015 PDIS CodeEU - Zanimljiva informatika - 02 Djordje Pavlovic - Live_ch...Педагошко друштво информатичара Србије
Forum naprednih tehnologija, Niš 2015, Evropska nedelja programiranja (codeEU, CodeWeekEU), Otvoreni čas programiranja - Zanimljiva informatika - PDIS Oni su deo budućnosti Elektronski fakultet, Niš sreda 14.10.2015.godine define a class name Employee whose objects are records for employee..pdf
define a class name Employee whose objects are records for employee. Derive this class from the
class person given in the listing 8.1. An employee record inherits an employee\'s name from the
class Person. In addition, an employee record contains an annual salary represented as a single
value of type double, a hire date that gives the year hired as a single value of type int, and an
identification number that is a value of type String. Give your class a reasonable complement of
constructors, accessor methods, and mutator methods, as well as an equals method. Write a
program to fully test your class definition
this is the test file
import java.util.*;
public class EmployeeTest
{
public static void main(String[] args)
{
Scanner keyboard = new Scanner(System.in);
char repeat;
do // repeat if user says \'yes\'
{
// Test the nine constructors (uses writeOutput method)
Employee e1 = new Employee(); // default constructor
System.out.println(\"Using default constructor:\");
e1.writeOutput();
System.out.println();
System.out.println(\"===============================\");
Employee e2 = new Employee(\"Mondo Kane\");
System.out.println(\"Using constructor with just name:\");
e2.writeOutput();
System.out.println();
System.out.println(\"===============================\");
Employee e3 = new Employee(\"Fleetis Pascal\", 111111.11);
System.out.println(\"Constructor with name & salary :\");
e3.writeOutput();
System.out.println();
System.out.println(\"===============================\");
Employee e4 = new Employee(\"Carl Wolf\", 1968);
System.out.println(\"Constructor with name and hire date:\");
e4.writeOutput();
System.out.println();
System.out.println(\"===============================\");
Employee e5 = new Employee(\"Sharon Kelly\", \"123-45-6789\");
System.out.println(\"Constructor with name and ssn:\");
e5.writeOutput();
System.out.println();
System.out.println(\"===============================\");
Employee e6 = new Employee(\"Joann Rousch\", 333333.33, 1963);
System.out.println(\"Constructor with name, salary & hire date:\");
e6.writeOutput();
System.out.println();
System.out.println(\"===============================\");
Employee e7 = new Employee(\"Lucy Sharp\", 444444.44, \"987-65-4321\");
System.out.println(\"Constructor with name, salary & ssn:\");
e7.writeOutput();
System.out.println();
System.out.println(\"===============================\");
Employee e8 = new Employee(\"Pierre Sokolskis\", 1964, \"999-99-9999\");
System.out.println(\"Constructor with name, hire date & ssn:\");
e8.writeOutput();
System.out.println();
System.out.println(\"===============================\");
Employee e9 = new Employee(\"Last One\", 555.55, 1999,
\"888-88-8888\");
System.out.println(\"Constructor with name, salary, hire date, and ssn:\");
e9.writeOutput();
System.out.println();
System.out.println(\"===============================\");
// Test methods to change, return and write values
// change all
System.out.println(\"Before:\");
e9.writeOutput();
System.out.println();
Sy.
Similar to Edit the Personjava file so that the natural ordering or a .pdf (20)
import java-util-ArrayList- import java-util-Collections- import java-.pdf
import java-util-ArrayList- import java-util-Collections- import java-.pdf
Here is my code for a linefile editor import java.io.BufferedRea.pdf
Here is my code for a linefile editor import java.io.BufferedRea.pdf
1. Section1.- Populating the list of persons on the person listing f.pdf
1. Section1.- Populating the list of persons on the person listing f.pdf
1. Section1.- Populating the list of persons on the person listing.pdf
1. Section1.- Populating the list of persons on the person listing.pdf
Create a text file that contains ten person objects where each object.docx
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Change the code in Writer.java only to get it working. Must contain .pdf
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So Far I have these two classes but I need help with my persontest c.pdf
So Far I have these two classes but I need help with my persontest c.pdf
How to fix these erros The method sortListltTgt in the.pdf
How to fix these erros The method sortListltTgt in the.pdf
Repeat Programming Project 2 in Chapter 5. This time, add the follow.pdf
Repeat Programming Project 2 in Chapter 5. This time, add the follow.pdf
In Java- Create a Graduate class derived from Student- A graduate has.pdf
In Java- Create a Graduate class derived from Student- A graduate has.pdf
FNT 2015 PDIS CodeEU - Zanimljiva informatika - 02 Djordje Pavlovic - Live_ch...
FNT 2015 PDIS CodeEU - Zanimljiva informatika - 02 Djordje Pavlovic - Live_ch...
define a class name Employee whose objects are records for employee..pdf
define a class name Employee whose objects are records for employee..pdf
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Refer to Question 10 in Chapter 17 of the textbook- How is the use of.pdf
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Independent variable
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What is your independent variable (what will you
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Independent variable
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Dependent variable
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Timeline
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o
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Dependent variable
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Timeline
Your experiment will need to follow a similar timeline to the one
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1 minute of a control condition
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Dependent variable
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Timeline
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After a 5-minute rest period, you will alternate between:
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at AddressBook.main(AddressBook.java:23)
import java.util.Scanner;
public class AddressBook {
public static void main(String[] args) {
Tablea addressBook = new Tablea();
Scanner scanner = new Scanner(System.in);
String name, address;
String action = null;
boolean moreEntries = true;
while (moreEntries) {
System.out.println("/nMenu");
System.out.println("n.Add Entry");
System.out.println("d. Delete Entry");
System.out.println("u. Update Entry");
System.out.println("l. Search");
System.out.println("a. View All");
System.out.println("q. Exit");
// Insert a new entry into the address book
switch (action) {
case "n":
System.out.print("Enter a name: ");
name = scanner.nextLine();
System.out.print("Enter an address: ");
address = scanner.nextLine();
addressBook.insert(name, address);
System.out.println("New Contact has been added,");
System.out.print("Add another entry? (y/n): ");
String answer = scanner.nextLine().toLowerCase();
moreEntries = answer.equals("y") || answer.equals("yes");
break;
// Delete an entry from the address book
case "d":
System.out.println("Enter a name to delete: ");
name = scanner.nextLine();
boolean deleted = addressBook.delete(name);
if (deleted) {
System.out.println("Address deleted");
} else {
System.out.println("Name not found");
}
break;
// Update an entry in the address book
case "u":
System.out.print("Enter a name to update: ");
name = scanner.nextLine();
System.out.print("Enter a new address: ");
address = scanner.nextLine();
boolean updated = addressBook.update(name, address);
if (updated) {
System.out.println("Address updated");
} else {
System.out.println("Name not found");
}
break;
// Lookup an entry in the address book
case "l":
System.out.print("Enter a name to look up: ");
name = scanner.nextLine();
String result = addressBook.lookUp(name);
if (result != null) {
System.out.println("Address: " + result);
} else {
System.out.println("Name not found");
}
break;
// Display all entries in the address book
case "a":
System.out.println("All entries:");
addressBook.displayAll();
break;
// Quit the program
case"q":
System.out.println("Quitting...");
}
}
}
}
OTHER FILES THAT GO WITH THIS
public class Node {
private String name;
private String address;
private Node next;
Node() {
// add here ..
}
Node(String name, String address) {
// add here ..
this.name = name;
this.address = address;
this.next = null;
}
public String getKey() {
// add here ..
return this.name;
}
public void setKey(String name) {
// add here ..
this.name = name;
}
public String getValue() {
// add here ..
return this.address;
}
public void setValue(String address) {
// add here ..
this.address = address;
}
public Node getNext() {
// add here ..
return this.next;
}
public void setNext(Node next) {
// add here ..
this.next = next;
}
}
import java.util.Scanner;
public class Tablea {
private Node mark;
publi.
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