JAVA Q2- Write a program that reads strings from the user and writes t.docx
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JAVA Q2: Write a program that reads strings from the user and writes them to an output file called userStrings.txt. Stop processing when the user enters the string \"DONE\". Do not write the sentinel string (\"DONE\") to the output file. [15 points] Hint: For a complete example of file IO, please see the attached TestData program. Sample Output: A string. Another string. Yet more text... DONE Solution Answer import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.util.Scanner; class WriteStringFile { public static void main(String[] args) { File file = new File(\"D:/userFile.txt\"); String data; Scanner input = new Scanner(System.in); data = input.readLine(); try (FileOutputStream fop = new FileOutputStream(file)) { // if file doesn\'t exists, then create it if (!file.exists()) { file.createNewFile(); } if (data != \"DONE\") { // get the content in bytes byte[] contentInBytes = content.getBytes(); fop.write(contentInBytes); fop.flush(); fop.close(); } else { System.out.println(\"User Enter the value Done.. So unable to write into file\"); } } catch (IOException e) { e.printStackTrace(); } } } .
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![JAVA
Q2: Write a program that reads strings from the user and writes them to an output file called
userStrings.txt. Stop processing when the user enters the string "DONE". Do not write the
sentinel string ("DONE") to the output file. [15 points] Hint: For a complete example of file IO,
please see the attached TestData program.
Sample Output:
A string.
Another string.
Yet more text...
DONE
Solution
Answer
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Scanner;
class WriteStringFile {
public static void main(String[] args) {
File file = new File("D:/userFile.txt");
String data;](https://image.slidesharecdn.com/javaq2-writeaprogramthatreadsstringsfromtheuserandwritest-230204014235-031094b5/85/JAVA-Q2-Write-a-program-that-reads-strings-from-the-user-and-writes-t-docx-1-320.jpg)
![Scanner input = new Scanner(System.in);
data = input.readLine();
try (FileOutputStream fop = new FileOutputStream(file)) {
// if file doesn't exists, then create it
if (!file.exists()) {
file.createNewFile();
}
if (data != "DONE") {
// get the content in bytes
byte[] contentInBytes = content.getBytes();
fop.write(contentInBytes);
fop.flush();
fop.close();
} else {
System.out.println("User Enter the value Done.. So unable to write into file");
}
} catch (IOException e) {
e.printStackTrace();
}
}
}](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Recommended
PAGE 1Input output for a file tutorialStreams and File IOI.docx
PAGE
1Input output for a file tutorialStreams and File I/O
In this tutorial we study the following concepts:
Text File I/O
Techniques for a file: Class File
Binary File I/O
File Objects and File Name
Note: For question 4 of the midterm you only need to look at the sections 2.2 and 2.3. I do not think you need java class: StringTokenizer. But I just added a small section about it to the end of this tutorial.
So far we learned keyboard/screen I/O. It is time to learn File I/O.
1 An Overview of stream and file I/O
A stream is an object that either outputs data or inputs data. The Java System.out is a stream object that outputs data on the screen.
As our program gets bigger and bigger we may need to enter a lot of data every time we run our program. We also may have a lot of data as the output of the program. It is not practical to enter a sizable input from the keyboard. Therefore, we save the data in a file and let our program to input from this file. Similarly, it is not practical to look at a sizable output. Moreover, we may need to save the output for further study. Therefore, we let our program to output to a file.
We have two kinds of I/O files: Text files and binary files. A text file is readable and understandable by human, but a binary file is not. The size of a text file is bigger than the size of a binary file. We can write arrays without using a loop into a binary file. We can also write objects to a binary file.
2 Text-File I/O
In this section we learn how to input from a text file and how to output to a text file. We first look at output instructions for a text file.
2.1 Text-File Output with PrintWriter class.
To be able to write to a file we need the Java class PrintWriter. This class is in JDK java.io, therefore we need to import it . Another class that we need is : FileOutputStream. This class also is in java.io. A file output stream is an output stream for writing data to a File.
Example 1. The following program to write an integer, a floating point number, a Boolean value and a string into a text file.
import java. io. PrintWriter;
import java. io. FileNotFoundException;
publicclass Main {
publicstaticvoid main( String[] args) {
PrintWriter out = null;
try {
out = new PrintWriter("out.txt");
} catch( FileNotFoundException e) {
System. out. println("Error: opening the file out.txt");
System. exit( 0);
}
out.println(-12);
out.println(25.5);
out.println(true);
out.println("John Doe.");
//Note that we also can write:
out.println(-12+"\n"+ 25.5 + "\n" + true + "\n" + "John Doe.");
out.close();
} }
The content of the file out.txt would be:
-12
25.5
true
John Doe.
-12
25.5
true
John Doe.
Description:
First we need to declare a variable that refers to and object of class PrintWriter. This class has several constructors. One of them needs the name of the output file on the hard drive (or other storages): out = new PrintWriter("out.txt")
This instruction co.
IN JAVA Write a program to create a binary data file named RandomInt.pdf
IN JAVA Write a program to create a binary data file named RandomInt.dat that consists of 10
random integer numbers using DataOutputStream. Use DataInputStream to read the integers
from RandomInt.dat just created and print them on the console in the same program.
Solution
DataInputStreamTest.java
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Random;
public class DataInputStreamTest {
public static void main(String[] args) {
String strFilePath = \"D:\\\\RandomInt.dat\";
Random r = new Random();
try
{
FileOutputStream outputStr = new FileOutputStream(strFilePath);
DataOutputStream outputStrData = new DataOutputStream(outputStr);
for(int i=0; i<10; i++){
outputStrData.writeInt(r.nextInt(100)+1);
outputStrData.writeChar(\'\\t\');
}
outputStrData.flush();
outputStrData.close();
outputStr.close();
FileInputStream inputStr = new FileInputStream(strFilePath);
DataInputStream inputStrData = new DataInputStream(inputStr);
int count = 0;
while(count<10){
int i = inputStrData.readInt();
inputStrData.readChar();
count++;
System.out.println( i);
}
outputStrData.flush();
inputStrData.close();
outputStrData.close();
}
catch(FileNotFoundException fe)
{
System.out.println(\"FileNotFoundException : \" + fe);
}
catch(IOException ioe)
{
System.out.println(\"IOException : \" + ioe);
}
}
}
Output:
65
8
95
69
1
77
16
97
85
1.
Write a java program that allows the user to input the name of a fil.docx
Write a java program that allows the user to input the name of a fil
Write a java program that allows the user to input the name of a file.docx
Write a java program that allows the user to input the name of a file that contains positive integers (one integer per line) The number of integers in the file The program should find all odd and even numbers and write the odd numbers to a file \"odd.txt\" and write the even numbers to another file \"even.txt\"
Solution
package expertques;
import java.io.File;
import java.io.PrintWriter;
import java.util.Scanner;
public class evenoddwithfile {
public static void main(String[] args) throws Exception {
File in;//file input
File even = new File(\"f://even.txt\");//creates file even
File odd = new File(\"f://odd.txt\");//creates file odd
Scanner s = new Scanner(System.in);//reads input from console or user
System.out.println(\"Enter the file name with path: \");
in = new File(s.nextLine());
System.out.println(\"Enter the number of integers n the file: \");
int n = s.nextInt();
if (in.exists()) {//checks if input file exist or not
Scanner ins = new Scanner(in);//reads input file
PrintWriter pe = new PrintWriter(even);//write to even file
PrintWriter po = new PrintWriter(odd);//writes to odd file
for (int i = 0; i < n; i++) {//loop till the numbers exists
int x = ins.nextInt();//reads from input file
if (x % 2 == 0) {//checks for even or odd
pe.println(x);//if even writes in even file
} else {
po.println(x);//if odd writes in odd file
}
}
pe.close();//closes even file very important else nothing will be written in the file
po.close();//closes odd file very important else nothing will be written in the file
System.out.println(\"File successfully written with odds and evens\");
} else {
System.out.println(\"Error file not found at specified path\");//if file not exist
}
}
}
output
run:
Enter the file name with path:
f://integers.txt
Enter the number of integers n the file:
8
File successfully written with odds and evens
BUILD SUCCESSFUL (total time: 6 seconds)
.
The Java Program for the above given isimport java.io.File;impo.pdf
The Java Program for the above given is:
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Scanner;
import java.util.NoSuchElementException;
import java.io.PrintWriter;
public class InputPrototype
{
public static void main(String[] args)
throws FileNotFoundException
{
Scanner in = new Scanner(System.in);
System.out.print(\"Input File Name: \");
String inputFileName = in.next();
System.out.print(\"Output File Name: \");
String outputFileName = in.next();
File inputFile = new File(inputFileName);
Scanner input = new Scanner(inputFile);
PrintWriter out = new PrintWriter(outputFileName);
double total= 0;
while (in.hasNextDouble())
{
double value = in.nextDouble();
out.printf(\"%15.2f\ \", value);
total = total + value;
}
out.printf(\"Total: %8.2f\ \", total);
in.close();
out.close();
}
}
}
Solution
The Java Program for the above given is:
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Scanner;
import java.util.NoSuchElementException;
import java.io.PrintWriter;
public class InputPrototype
{
public static void main(String[] args)
throws FileNotFoundException
{
Scanner in = new Scanner(System.in);
System.out.print(\"Input File Name: \");
String inputFileName = in.next();
System.out.print(\"Output File Name: \");
String outputFileName = in.next();
File inputFile = new File(inputFileName);
Scanner input = new Scanner(inputFile);
PrintWriter out = new PrintWriter(outputFileName);
double total= 0;
while (in.hasNextDouble())
{
double value = in.nextDouble();
out.printf(\"%15.2f\ \", value);
total = total + value;
}
out.printf(\"Total: %8.2f\ \", total);
in.close();
out.close();
}
}
}.
Write a program that will count the number of characters- words- and l.docx
Write a program that will count the number of characters, words, and lines in a file. Words are separated by whitespace characters. The file name should be passed as a command-line argument, as shown;
c:\\exercise>java Exercise12_13 Loan.java
File Loan.java has
1919 characters
210 words
71 lines
c:\\exercise>
Solution
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;
import java.util.StringTokenizer;
public class ass1
{
public static void main(String[] args) throws FileNotFoundException
{
//Â Â Scanner console = new Scanner(System.in);
System.out.println(args[0]);
//System.out.println(args[1]);
//System.out.println(args[2]);
String inputFile=args[0];
File file = new File(inputFile);
Scanner in = new Scanner(file);
int words = 0;
int lines = 0;
int chars = 0;
while(in.hasNextLine()) {
lines++;
String line = in.nextLine();
chars += line.length();
words += new StringTokenizer(line, \" \").countTokens();
}
System.out.println(\"characters are \"+chars);
System.out.println(\"words are \"+words);
System.out.println(\"lines are \"+lines);
}
}
.
Recommended
PAGE 1Input output for a file tutorialStreams and File IOI.docx
PAGE
1Input output for a file tutorialStreams and File I/O
In this tutorial we study the following concepts:
Text File I/O
Techniques for a file: Class File
Binary File I/O
File Objects and File Name
Note: For question 4 of the midterm you only need to look at the sections 2.2 and 2.3. I do not think you need java class: StringTokenizer. But I just added a small section about it to the end of this tutorial.
So far we learned keyboard/screen I/O. It is time to learn File I/O.
1 An Overview of stream and file I/O
A stream is an object that either outputs data or inputs data. The Java System.out is a stream object that outputs data on the screen.
As our program gets bigger and bigger we may need to enter a lot of data every time we run our program. We also may have a lot of data as the output of the program. It is not practical to enter a sizable input from the keyboard. Therefore, we save the data in a file and let our program to input from this file. Similarly, it is not practical to look at a sizable output. Moreover, we may need to save the output for further study. Therefore, we let our program to output to a file.
We have two kinds of I/O files: Text files and binary files. A text file is readable and understandable by human, but a binary file is not. The size of a text file is bigger than the size of a binary file. We can write arrays without using a loop into a binary file. We can also write objects to a binary file.
2 Text-File I/O
In this section we learn how to input from a text file and how to output to a text file. We first look at output instructions for a text file.
2.1 Text-File Output with PrintWriter class.
To be able to write to a file we need the Java class PrintWriter. This class is in JDK java.io, therefore we need to import it . Another class that we need is : FileOutputStream. This class also is in java.io. A file output stream is an output stream for writing data to a File.
Example 1. The following program to write an integer, a floating point number, a Boolean value and a string into a text file.
import java. io. PrintWriter;
import java. io. FileNotFoundException;
publicclass Main {
publicstaticvoid main( String[] args) {
PrintWriter out = null;
try {
out = new PrintWriter("out.txt");
} catch( FileNotFoundException e) {
System. out. println("Error: opening the file out.txt");
System. exit( 0);
}
out.println(-12);
out.println(25.5);
out.println(true);
out.println("John Doe.");
//Note that we also can write:
out.println(-12+"\n"+ 25.5 + "\n" + true + "\n" + "John Doe.");
out.close();
} }
The content of the file out.txt would be:
-12
25.5
true
John Doe.
-12
25.5
true
John Doe.
Description:
First we need to declare a variable that refers to and object of class PrintWriter. This class has several constructors. One of them needs the name of the output file on the hard drive (or other storages): out = new PrintWriter("out.txt")
This instruction co.
IN JAVA Write a program to create a binary data file named RandomInt.pdf
IN JAVA Write a program to create a binary data file named RandomInt.dat that consists of 10
random integer numbers using DataOutputStream. Use DataInputStream to read the integers
from RandomInt.dat just created and print them on the console in the same program.
Solution
DataInputStreamTest.java
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Random;
public class DataInputStreamTest {
public static void main(String[] args) {
String strFilePath = \"D:\\\\RandomInt.dat\";
Random r = new Random();
try
{
FileOutputStream outputStr = new FileOutputStream(strFilePath);
DataOutputStream outputStrData = new DataOutputStream(outputStr);
for(int i=0; i<10; i++){
outputStrData.writeInt(r.nextInt(100)+1);
outputStrData.writeChar(\'\\t\');
}
outputStrData.flush();
outputStrData.close();
outputStr.close();
FileInputStream inputStr = new FileInputStream(strFilePath);
DataInputStream inputStrData = new DataInputStream(inputStr);
int count = 0;
while(count<10){
int i = inputStrData.readInt();
inputStrData.readChar();
count++;
System.out.println( i);
}
outputStrData.flush();
inputStrData.close();
outputStrData.close();
}
catch(FileNotFoundException fe)
{
System.out.println(\"FileNotFoundException : \" + fe);
}
catch(IOException ioe)
{
System.out.println(\"IOException : \" + ioe);
}
}
}
Output:
65
8
95
69
1
77
16
97
85
1.
Write a java program that allows the user to input the name of a fil.docx
Write a java program that allows the user to input the name of a fil
Write a java program that allows the user to input the name of a file.docx
Write a java program that allows the user to input the name of a file that contains positive integers (one integer per line) The number of integers in the file The program should find all odd and even numbers and write the odd numbers to a file \"odd.txt\" and write the even numbers to another file \"even.txt\"
Solution
package expertques;
import java.io.File;
import java.io.PrintWriter;
import java.util.Scanner;
public class evenoddwithfile {
public static void main(String[] args) throws Exception {
File in;//file input
File even = new File(\"f://even.txt\");//creates file even
File odd = new File(\"f://odd.txt\");//creates file odd
Scanner s = new Scanner(System.in);//reads input from console or user
System.out.println(\"Enter the file name with path: \");
in = new File(s.nextLine());
System.out.println(\"Enter the number of integers n the file: \");
int n = s.nextInt();
if (in.exists()) {//checks if input file exist or not
Scanner ins = new Scanner(in);//reads input file
PrintWriter pe = new PrintWriter(even);//write to even file
PrintWriter po = new PrintWriter(odd);//writes to odd file
for (int i = 0; i < n; i++) {//loop till the numbers exists
int x = ins.nextInt();//reads from input file
if (x % 2 == 0) {//checks for even or odd
pe.println(x);//if even writes in even file
} else {
po.println(x);//if odd writes in odd file
}
}
pe.close();//closes even file very important else nothing will be written in the file
po.close();//closes odd file very important else nothing will be written in the file
System.out.println(\"File successfully written with odds and evens\");
} else {
System.out.println(\"Error file not found at specified path\");//if file not exist
}
}
}
output
run:
Enter the file name with path:
f://integers.txt
Enter the number of integers n the file:
8
File successfully written with odds and evens
BUILD SUCCESSFUL (total time: 6 seconds)
.
The Java Program for the above given isimport java.io.File;impo.pdf
The Java Program for the above given is:
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Scanner;
import java.util.NoSuchElementException;
import java.io.PrintWriter;
public class InputPrototype
{
public static void main(String[] args)
throws FileNotFoundException
{
Scanner in = new Scanner(System.in);
System.out.print(\"Input File Name: \");
String inputFileName = in.next();
System.out.print(\"Output File Name: \");
String outputFileName = in.next();
File inputFile = new File(inputFileName);
Scanner input = new Scanner(inputFile);
PrintWriter out = new PrintWriter(outputFileName);
double total= 0;
while (in.hasNextDouble())
{
double value = in.nextDouble();
out.printf(\"%15.2f\ \", value);
total = total + value;
}
out.printf(\"Total: %8.2f\ \", total);
in.close();
out.close();
}
}
}
Solution
The Java Program for the above given is:
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Scanner;
import java.util.NoSuchElementException;
import java.io.PrintWriter;
public class InputPrototype
{
public static void main(String[] args)
throws FileNotFoundException
{
Scanner in = new Scanner(System.in);
System.out.print(\"Input File Name: \");
String inputFileName = in.next();
System.out.print(\"Output File Name: \");
String outputFileName = in.next();
File inputFile = new File(inputFileName);
Scanner input = new Scanner(inputFile);
PrintWriter out = new PrintWriter(outputFileName);
double total= 0;
while (in.hasNextDouble())
{
double value = in.nextDouble();
out.printf(\"%15.2f\ \", value);
total = total + value;
}
out.printf(\"Total: %8.2f\ \", total);
in.close();
out.close();
}
}
}.
Write a program that will count the number of characters- words- and l.docx
Write a program that will count the number of characters, words, and lines in a file. Words are separated by whitespace characters. The file name should be passed as a command-line argument, as shown;
c:\\exercise>java Exercise12_13 Loan.java
File Loan.java has
1919 characters
210 words
71 lines
c:\\exercise>
Solution
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;
import java.util.StringTokenizer;
public class ass1
{
public static void main(String[] args) throws FileNotFoundException
{
//Â Â Scanner console = new Scanner(System.in);
System.out.println(args[0]);
//System.out.println(args[1]);
//System.out.println(args[2]);
String inputFile=args[0];
File file = new File(inputFile);
Scanner in = new Scanner(file);
int words = 0;
int lines = 0;
int chars = 0;
while(in.hasNextLine()) {
lines++;
String line = in.nextLine();
chars += line.length();
words += new StringTokenizer(line, \" \").countTokens();
}
System.out.println(\"characters are \"+chars);
System.out.println(\"words are \"+words);
System.out.println(\"lines are \"+lines);
}
}
.
Hi, I need help with a java programming project. specifically practi.pdf
Given 8 distinct integers from the set {1, 2, . . . , 16}, prove that there exists k such that ai aj = k
has at least 3 distinct solutions (ai , aj ) ?
Solution
For any k (unless the K is zero), at least 3 distinct solutions need not be existing.
Let\'s look at the next most favourable case
If k= 2;
We have to consider the case where the number of solutions of ai-aj=2 are minimum since we
have to show that at least 3 distinct solutions exist (which means even in the most unfavourable
case for a chosen k there will be 3 distinct solutions satisfying the equation ai-aj=2)
If k = 2; we start by taking numbers that are not at all 2 units apart from each other;
So we start with 1 and move 3 units successively ahead
1, 4, 7, 10,13, 16; Now we notice that these 6 numbers are of 3k+1 form; remaining numbers
can be any 2 ranomdly selected say 2 and 11; we get 4-2 = 2 and 13-11=2; Hence only 2 distinct
solutions are possible..
• GUI design using drag and drop feature of IDE(Net beans), • File IO
Topics covered:
• GUI design using drag and drop feature of IDE(Net beans),
• File IO
• Character Streams
• FileReader,FileWriter
• Byte Streams
• File input stream, File output stream
• Object input stream, Object output stream
• Character vs Streams
• Sterilization,Deserilization and Externalization
Write a program in java that asks a user for a file name and prints .pdf
Write a program in java that asks a user for a file name and prints the number of characters,
words (separated by whitespace), and lines in that file. Then, it replaces each line of the file with
its reverse. For example, if the file contains the following lines (Test1.txt):
This is a test
Hi there
Output on the console:
Number of characters: 22
Number of words: 6
Number of lines: 2
Data written to the file (Test1.txt):
tset a si sihT
ereth iH
Solution
ReadFileCount.java
import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintStream;
import java.util.Scanner;
public class ReadFileCount {
public static void main(String[] args) throws FileNotFoundException {
Scanner scan = new Scanner(System.in);
System.out.println(\"Enter file name: \");
String fileName = scan.next();
StringBuffer finalsb = new StringBuffer();
File file = new File(fileName);
if(file.exists()){
int numberOfLines = 0;
int numberOfCharacters = 0;
int numberOfWords = 0;
Scanner scan1 = new Scanner(file);;
while(scan1.hasNextLine()){
StringBuffer sb = new StringBuffer();
String s = scan1.nextLine();
sb.append(s);
numberOfLines++;
numberOfCharacters = numberOfCharacters + s.length();
String words[] = s.split(\" \");
numberOfWords = numberOfWords + words.length;
finalsb.append(sb.reverse());
finalsb.append(\"\ \");
}
System.out.println(\"Number of characters: \"+numberOfCharacters);
System.out.println(\"Number of words: \"+numberOfWords);
System.out.println(\"Number of lines : \"+numberOfLines);
PrintStream ps =new PrintStream(file);
ps.print(finalsb.toString());
ps.flush();
ps.close();
System.out.println(\"Data written to the file \"+fileName);
}
else{
System.out.println(\"File does not exist\");
}
}
}
Output:
Enter file name:
D:\\\\Test1.txt
Number of characters: 0
Number of words: 0
Number of lines : 0
Data written to the file D:\\\\Test1.txt
Test1.txt
tset a si sihT
ereht iH.
I can not get my code to comply it gets mad that I have run declare mo.docx
I can not get my code to comply it gets mad that I have run declare more than once. Please help me figure out how to get this to work
package projectOne;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Scanner;
import java.util.*;
import java.io.*;
public class Main
{ public static void main(String[] pArgs){
Main mainObject = new Main();
mainObject.run();
} private void run() {
public FileReader readFile() throws FileNotFoundException {
FileReader file = new FileReader(\"p01-in.txt\");
return file;
}
public ArrayList<Integer> getData(FileReader file) throws FileNotFoundException {
Scanner data_read = new Scanner(new BufferedReader(file));
ArrayList<Integer> data = new ArrayList<Integer>();
while (data_read.hasNext()) {
int item = data_read.nextInt();
data.add(item);
}
return data;
}
public ArrayList<Integer> calcRuns(ArrayList<Integer> data) {
ArrayList<Integer> runs = new ArrayList<Integer>();
Iterator<Integer> i_data = data.iterator();
int run = 0;
int temp = i_data.next();
while (i_data.hasNext()) {
int t1 = i_data.next();
if (temp < t1)
run++;
else {
runs.add(run);
run = 0;
}
temp = t1;
}
i_data = data.iterator();
temp = i_data.next();
run = 0;
while (i_data.hasNext()) {
int t1 = i_data.next();
if (temp > t1)
run++;
else {
runs.add(run);
run = 0;
}
temp = t1;
}
return runs;
}
public void writeOutput(ArrayList<Integer> runs) throws IOException {
PrintWriter out = new PrintWriter(new File(\"p01-runs.txt\"));
ArrayList<Integer> run_count = new ArrayList<Integer>();
int i = 0;
int r_count = Collections.frequency(run_count, i);
while (i < 100) {
run_count.add(r_count);
i++;
r_count = Collections.frequency(runs, i);
}
Iterator<Integer> i_runs = run_count.iterator();
i = 0;
while (i_runs.hasNext()) {
int run = i_runs.next();
String line = \"run_\" + i + \" ,\" + run;
i++;
out.println(line);
}
}
public void run() throws Exception {
FileReader fin = this.readFile();
ArrayList<Integer> data = this.getData(fin);
ArrayList<Integer> runs = this.calcRuns(data);
this.writeOutput(runs);
}
}
Solution
In your program you have to change the syntax errors at method declaration.so your not getting output.
.
Use Java to program the following.1. Create public java class name.pdf
Use Java to program the following.
1. Create public java class named Benford.
2. It\'s main function should prompt for the name of a data file and then the function iterates
through the all of the elements in the data file and computes the frequency (count and
percentage) of the first number in each entry.
3. Note: Some of the data files have comments that you must filter out.
4. Also note: that blank lines or lines where the number begins or is 0 must also be filtered out.
5. Your output must be formatted as follows.
Solution
Hi Firend, Please find my code.
Please let me know in case of any issue.
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;
public class CountFrequency {
public static void main(String[] args) throws FileNotFoundException {
Scanner sc = new Scanner(System.in);
// taking input file name
System.out.print(\"Enter input file name: \");
String fileName = sc.next();
// opening input file
Scanner inputFile = new Scanner(new File(fileName));
// declaring array to store count of first digit of each entery
int[] frequency = new int[10];
int totalCount = 0; // to maintain total count
int num;
// reading all lines
while(inputFile.hasNextLine()){
// reading current line
String line = inputFile.nextLine();
// if line is not empty
if(line == null || line.isEmpty() || line.trim() == \"\")
continue;
// taking first character of current line
char firstDigit = line.charAt(0);
// if first character is digit and not equal to 0
if(Character.isDigit(firstDigit) && firstDigit != \'0\'){
// converting first character of current line in integer
int d = firstDigit - \'0\';
frequency[d]++;
totalCount++;
}
}
System.out.println(\"Digit\\tCount\\tFrequency\");
for(int i=1; i<=9; i++){
System.out.println(i+\"\\t\"+frequency[i]+\"\\t\"+
((double)frequency[i]/(double)totalCount*100));
}
}
}
/*
Sample run:
##### Entry of input.txt:
453 43
//543
123
0
4ee
875
52
// Output
Enter input file name: input.txt
Digit Count Frequency
1 1 20.0
2 0 0.0
3 0 0.0
4 2 40.0
5 1 20.0
6 0 0.0
7 0 0.0
8 1 20.0
9 0 0.0
*/.
In JavaWrite a program that reads a file and counts how many line.pdf
In Java:
Write a program that reads a file and counts how many lines it contains
Solution
sentences.txt (Save the file in the D:Drive.then the path of the file pointing to it is
D:\\\\sentences.txt )
sentence 1
sentence 2
sentence 3
sentence 4
sentence 5
sentence 6
sentence 7
sentence 8
sentence 9
sentence 10
sentence 11
sentence 12
sentence 13
sentence 14
sentence 15
sentence 16
sentence 17
sentence 18
sentence 19
sentence 20
______________________________________
CountingNoOfLinesInFile.java
import java.io.File;
import java.io.IOException;
import java.util.Scanner;
public class CountingNoOfLinesInFile {
public static void main(String args[]) {
//Declaring variables
int count_lines=0;
//Assigning the file name to the String variable
String fname = \"D://lines999.txt\";
//Creating the Scanner class reference
Scanner sc=null;
try{
//Opening the file
sc= new Scanner(new File(fname));
//This loops continue to execute until the end of the file
while (sc.hasNext()){
sc.nextLine();
//Counting the number of lines
count_lines++;
}
} catch (IOException e)
{
//Displaying the exception
System.out.println(\"Exception :\"+e);
}
//Displaying the number of lines in the file
System.out.println(\"No of Lines in the File :\"+count_lines);
}
}
______________________________________
Output:
No of Lines in the File :20
________________Thank You.
2. Write a program which will open an input file and write to an out.pdf
2. Write a program which will open an input file and write to an output file. Use exception
handling (try & Catch to display appropriate error handling).
Solution
herer is code:
import java.io.*;
public class Copytxt{
public static void main (String[] args)throws IOException {
int i;
FileInputStream fin;
FileOutputStream fout;
try {
// open input file
try {
fin = new FileInputStream(\"input.txt\"); // pass the input location file here
}
catch (FileNotFoundException e) { // if file not found
System.out.println(\"Input File Not Found\");
return;
}
// open output file
try {
fout = new FileOutputStream(\"output.txt\"); // pass the output location file here
}
catch (FileNotFoundException e) { // if file not found
System.out.println(\"Error Opening Output File\");
return;
}
}
catch (ArrayIndexOutOfBoundsException e) {
System.out.println(\"Usage: CopyFile From To\");
return;
}
// Copy File
try {
byte[] buffer = new byte[1024];
int length;
/*copying the contents from input stream to
* output stream using read and write methods
*/
while ((length = fin.read(buffer)) > 0){
fout.write(buffer, 0, length);
}
}
catch (IOException e) {
System.out.println(\"File Error\");
}
fin.close();
fout.close();
}
}.
The java program that reads an input file input.txt an.pdf
/*
* The java program that reads an input file input.txt
* and then reads the contens of file.
* the program throws file not found exception if file not found.
* The program throws DimensionMismatchException if mismatch of dimension.
* The program throws NumberFormatException if mismatch of data read.
* */
//FormatChecker.java
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;
public class FormatChecker {
public static void main(String[] args) {
String fileName=\"input.txt\";
//calling checkFormat
checkFormat(fileName);
}
//Method checkFormat that takes string and check for
//errors otherwise reads the file and print to console
private static void checkFormat(String fileName) {
Scanner filescanner=null;
try {
//thorws FileNotFoundException error if file not found
filescanner=new Scanner(new File(fileName));
} catch (FileNotFoundException e) {
System.out.println(e.getMessage());
}
int rows=0;
int cols=0;
double[][] arr;
String dimensions[]=filescanner.nextLine().split(\" \");
try
{
//thorws DimensionMismatchException error if mismatch of dimension
if(dimensions.length>2)
throw new DimensionMismatchException(\"Dimension mismatch\");
} catch (DimensionMismatchException e1) {
e1.printStackTrace();
}
try {
//thorws NumberFormatException error if mismatch of reading values
rows=Integer.parseInt(dimensions[0]);
cols=Integer.parseInt(dimensions[1]);
arr=new double[rows][cols];
System.out.println(\"File contents\");
for (int i = 0; i < arr.length; i++)
{
for (int j = 0; j < arr[i].length; j++)
{
arr[i][j]=filescanner.nextDouble();
System.out.printf(\"%6.1f\",arr[i][j]);
}
System.out.println();
}
} catch (NumberFormatException e) {
System.out.println(e.getMessage());
}
}
}
------------------------------------------------------------------------
//User defined DimensionMismatchException class
//that extends the Exception class
//DimensionMismatchException.java
public class DimensionMismatchException extends Exception {
public DimensionMismatchException(String msg) {
super(msg);
}
}
------------------------------------------------------------------------
input.txt
5 6
2.5 0 1 0 0 0
0 -1 4 0 0 0
0 0 0 0 1.1 0
0 2 0 0 5 0
0 -3.14 0 0 0 0
------------------------------------------------------------------------
File contents
2.5 0.0 1.0 0.0 0.0 0.0
0.0 -1.0 4.0 0.0 0.0 0.0
0.0 0.0 0.0 0.0 1.1 0.0
0.0 2.0 0.0 0.0 5.0 0.0
0.0 -3.1 0.0 0.0 0.0 0.0
Note : DimensionMismatchException class is included
Solution
/*
* The java program that reads an input file input.txt
* and then reads the contens of file.
* the program throws file not found exception if file not found.
* The program throws DimensionMismatchException if mismatch of dimension.
* The program throws NumberFormatException if mismatch of data read.
* */
//FormatChecker.java
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;
public class FormatChecker {
public static void main(String[] args) {
String fileName=\"input.txt\";
//calling check.
Judging from their relative positions in the Periodic Table- which ato.docx
Judging from their relative positions in the Periodic Table, which atom in each set is more
electronegative?
(a) Carbon or nitrogen (b) Chlorine or bromine (c) Oxygen or sulfur
Solution
a) carbon and nitrogen
Ans - Nitrogen
both carbon and nitrogen belong to II nd period of periodic table in same period trend of electronegattivity is from left to right electronegativity increases. nitrogen is one place right from carbon therefore nitrogen in more electronegative than carbon.
b) Chlorine and bromine
Ans - Chlorine
Chlorine and bromine belong to same group of halogen familly trend for elecronegativity in same group is from up to down electronegativity decreases. bromine is down than chlorine in group therefore bromine have less electronegativity and chlorine have more electronegativity than bromine.
c) Oxygen and sulfur
Ans - Oxygen
oxygen and sulfur belong to same group of 6A trend for elecronegativity in same group is from up to down electronegativity decreases. sufur is down than oxygen in group therefore sulfur have less electronegativity and oxygen have more electronegativity than sulfur.
.
John Corporation has three investments that are classified as noncontr.docx
John Corporation has three investments that are classified as noncontrolling.
1.A bond investment, purchased on Jan 1, 2014 and maturing on Dec. 31, 2020. They purchased them to help out the company and the interest income was quite high.
2. An investment in Mark Company stock, purchased on Dec. 1, 2014 because the price was low and John Corp. had some excess cash to invest. John Corporation\'s investment manager did not like taking risk or playing the market on an active basis.
3. An investment in 25% of the stock of Smith Company, a new customer who was experiencing management difficulties that affected their profitability. John Corp. intended to keep this investment for as long as it took to stabilize the company.
Answer the following questions about these investments.
1. The investment in bonds should be classified as:
Select one:
a. held-to-maturity securities
b. trading securities
c. significant influence securities
d. available-for-sale securities
2. The investment in Mark Company stock should be classified as:
Select one:
a. trading securities
b. available-for-sale securities
c. significant influence securities
d. held-to-maturity securities
3. The investment in Smith Company stock should be classified as:
Select one:
a. held-to-maturity securities
b. trading securities
c. available-for-sale securities
d. significant influence securities
Solution
Bonds are d. available-for-sale securities
Reason is that they were bought to help out other company rather than making money out of it.
Investment in Mark company is reffered to as d. held-to-maturity securities
Investment in Smith Company is reffered to as d. significant influence securities as these stocks amount to 25%. Stock holing of 20 to 50% is refferef to as Significant influence securities.
.
More Related Content
Similar to JAVA Q2- Write a program that reads strings from the user and writes t.docx
Hi, I need help with a java programming project. specifically practi.pdf
Given 8 distinct integers from the set {1, 2, . . . , 16}, prove that there exists k such that ai aj = k
has at least 3 distinct solutions (ai , aj ) ?
Solution
For any k (unless the K is zero), at least 3 distinct solutions need not be existing.
Let\'s look at the next most favourable case
If k= 2;
We have to consider the case where the number of solutions of ai-aj=2 are minimum since we
have to show that at least 3 distinct solutions exist (which means even in the most unfavourable
case for a chosen k there will be 3 distinct solutions satisfying the equation ai-aj=2)
If k = 2; we start by taking numbers that are not at all 2 units apart from each other;
So we start with 1 and move 3 units successively ahead
1, 4, 7, 10,13, 16; Now we notice that these 6 numbers are of 3k+1 form; remaining numbers
can be any 2 ranomdly selected say 2 and 11; we get 4-2 = 2 and 13-11=2; Hence only 2 distinct
solutions are possible..
• GUI design using drag and drop feature of IDE(Net beans), • File IO
Topics covered:
• GUI design using drag and drop feature of IDE(Net beans),
• File IO
• Character Streams
• FileReader,FileWriter
• Byte Streams
• File input stream, File output stream
• Object input stream, Object output stream
• Character vs Streams
• Sterilization,Deserilization and Externalization
Write a program in java that asks a user for a file name and prints .pdf
Write a program in java that asks a user for a file name and prints the number of characters,
words (separated by whitespace), and lines in that file. Then, it replaces each line of the file with
its reverse. For example, if the file contains the following lines (Test1.txt):
This is a test
Hi there
Output on the console:
Number of characters: 22
Number of words: 6
Number of lines: 2
Data written to the file (Test1.txt):
tset a si sihT
ereth iH
Solution
ReadFileCount.java
import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintStream;
import java.util.Scanner;
public class ReadFileCount {
public static void main(String[] args) throws FileNotFoundException {
Scanner scan = new Scanner(System.in);
System.out.println(\"Enter file name: \");
String fileName = scan.next();
StringBuffer finalsb = new StringBuffer();
File file = new File(fileName);
if(file.exists()){
int numberOfLines = 0;
int numberOfCharacters = 0;
int numberOfWords = 0;
Scanner scan1 = new Scanner(file);;
while(scan1.hasNextLine()){
StringBuffer sb = new StringBuffer();
String s = scan1.nextLine();
sb.append(s);
numberOfLines++;
numberOfCharacters = numberOfCharacters + s.length();
String words[] = s.split(\" \");
numberOfWords = numberOfWords + words.length;
finalsb.append(sb.reverse());
finalsb.append(\"\ \");
}
System.out.println(\"Number of characters: \"+numberOfCharacters);
System.out.println(\"Number of words: \"+numberOfWords);
System.out.println(\"Number of lines : \"+numberOfLines);
PrintStream ps =new PrintStream(file);
ps.print(finalsb.toString());
ps.flush();
ps.close();
System.out.println(\"Data written to the file \"+fileName);
}
else{
System.out.println(\"File does not exist\");
}
}
}
Output:
Enter file name:
D:\\\\Test1.txt
Number of characters: 0
Number of words: 0
Number of lines : 0
Data written to the file D:\\\\Test1.txt
Test1.txt
tset a si sihT
ereht iH.
I can not get my code to comply it gets mad that I have run declare mo.docx
I can not get my code to comply it gets mad that I have run declare more than once. Please help me figure out how to get this to work
package projectOne;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Scanner;
import java.util.*;
import java.io.*;
public class Main
{ public static void main(String[] pArgs){
Main mainObject = new Main();
mainObject.run();
} private void run() {
public FileReader readFile() throws FileNotFoundException {
FileReader file = new FileReader(\"p01-in.txt\");
return file;
}
public ArrayList<Integer> getData(FileReader file) throws FileNotFoundException {
Scanner data_read = new Scanner(new BufferedReader(file));
ArrayList<Integer> data = new ArrayList<Integer>();
while (data_read.hasNext()) {
int item = data_read.nextInt();
data.add(item);
}
return data;
}
public ArrayList<Integer> calcRuns(ArrayList<Integer> data) {
ArrayList<Integer> runs = new ArrayList<Integer>();
Iterator<Integer> i_data = data.iterator();
int run = 0;
int temp = i_data.next();
while (i_data.hasNext()) {
int t1 = i_data.next();
if (temp < t1)
run++;
else {
runs.add(run);
run = 0;
}
temp = t1;
}
i_data = data.iterator();
temp = i_data.next();
run = 0;
while (i_data.hasNext()) {
int t1 = i_data.next();
if (temp > t1)
run++;
else {
runs.add(run);
run = 0;
}
temp = t1;
}
return runs;
}
public void writeOutput(ArrayList<Integer> runs) throws IOException {
PrintWriter out = new PrintWriter(new File(\"p01-runs.txt\"));
ArrayList<Integer> run_count = new ArrayList<Integer>();
int i = 0;
int r_count = Collections.frequency(run_count, i);
while (i < 100) {
run_count.add(r_count);
i++;
r_count = Collections.frequency(runs, i);
}
Iterator<Integer> i_runs = run_count.iterator();
i = 0;
while (i_runs.hasNext()) {
int run = i_runs.next();
String line = \"run_\" + i + \" ,\" + run;
i++;
out.println(line);
}
}
public void run() throws Exception {
FileReader fin = this.readFile();
ArrayList<Integer> data = this.getData(fin);
ArrayList<Integer> runs = this.calcRuns(data);
this.writeOutput(runs);
}
}
Solution
In your program you have to change the syntax errors at method declaration.so your not getting output.
.
Use Java to program the following.1. Create public java class name.pdf
Use Java to program the following.
1. Create public java class named Benford.
2. It\'s main function should prompt for the name of a data file and then the function iterates
through the all of the elements in the data file and computes the frequency (count and
percentage) of the first number in each entry.
3. Note: Some of the data files have comments that you must filter out.
4. Also note: that blank lines or lines where the number begins or is 0 must also be filtered out.
5. Your output must be formatted as follows.
Solution
Hi Firend, Please find my code.
Please let me know in case of any issue.
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;
public class CountFrequency {
public static void main(String[] args) throws FileNotFoundException {
Scanner sc = new Scanner(System.in);
// taking input file name
System.out.print(\"Enter input file name: \");
String fileName = sc.next();
// opening input file
Scanner inputFile = new Scanner(new File(fileName));
// declaring array to store count of first digit of each entery
int[] frequency = new int[10];
int totalCount = 0; // to maintain total count
int num;
// reading all lines
while(inputFile.hasNextLine()){
// reading current line
String line = inputFile.nextLine();
// if line is not empty
if(line == null || line.isEmpty() || line.trim() == \"\")
continue;
// taking first character of current line
char firstDigit = line.charAt(0);
// if first character is digit and not equal to 0
if(Character.isDigit(firstDigit) && firstDigit != \'0\'){
// converting first character of current line in integer
int d = firstDigit - \'0\';
frequency[d]++;
totalCount++;
}
}
System.out.println(\"Digit\\tCount\\tFrequency\");
for(int i=1; i<=9; i++){
System.out.println(i+\"\\t\"+frequency[i]+\"\\t\"+
((double)frequency[i]/(double)totalCount*100));
}
}
}
/*
Sample run:
##### Entry of input.txt:
453 43
//543
123
0
4ee
875
52
// Output
Enter input file name: input.txt
Digit Count Frequency
1 1 20.0
2 0 0.0
3 0 0.0
4 2 40.0
5 1 20.0
6 0 0.0
7 0 0.0
8 1 20.0
9 0 0.0
*/.
In JavaWrite a program that reads a file and counts how many line.pdf
In Java:
Write a program that reads a file and counts how many lines it contains
Solution
sentences.txt (Save the file in the D:Drive.then the path of the file pointing to it is
D:\\\\sentences.txt )
sentence 1
sentence 2
sentence 3
sentence 4
sentence 5
sentence 6
sentence 7
sentence 8
sentence 9
sentence 10
sentence 11
sentence 12
sentence 13
sentence 14
sentence 15
sentence 16
sentence 17
sentence 18
sentence 19
sentence 20
______________________________________
CountingNoOfLinesInFile.java
import java.io.File;
import java.io.IOException;
import java.util.Scanner;
public class CountingNoOfLinesInFile {
public static void main(String args[]) {
//Declaring variables
int count_lines=0;
//Assigning the file name to the String variable
String fname = \"D://lines999.txt\";
//Creating the Scanner class reference
Scanner sc=null;
try{
//Opening the file
sc= new Scanner(new File(fname));
//This loops continue to execute until the end of the file
while (sc.hasNext()){
sc.nextLine();
//Counting the number of lines
count_lines++;
}
} catch (IOException e)
{
//Displaying the exception
System.out.println(\"Exception :\"+e);
}
//Displaying the number of lines in the file
System.out.println(\"No of Lines in the File :\"+count_lines);
}
}
______________________________________
Output:
No of Lines in the File :20
________________Thank You.
2. Write a program which will open an input file and write to an out.pdf
2. Write a program which will open an input file and write to an output file. Use exception
handling (try & Catch to display appropriate error handling).
Solution
herer is code:
import java.io.*;
public class Copytxt{
public static void main (String[] args)throws IOException {
int i;
FileInputStream fin;
FileOutputStream fout;
try {
// open input file
try {
fin = new FileInputStream(\"input.txt\"); // pass the input location file here
}
catch (FileNotFoundException e) { // if file not found
System.out.println(\"Input File Not Found\");
return;
}
// open output file
try {
fout = new FileOutputStream(\"output.txt\"); // pass the output location file here
}
catch (FileNotFoundException e) { // if file not found
System.out.println(\"Error Opening Output File\");
return;
}
}
catch (ArrayIndexOutOfBoundsException e) {
System.out.println(\"Usage: CopyFile From To\");
return;
}
// Copy File
try {
byte[] buffer = new byte[1024];
int length;
/*copying the contents from input stream to
* output stream using read and write methods
*/
while ((length = fin.read(buffer)) > 0){
fout.write(buffer, 0, length);
}
}
catch (IOException e) {
System.out.println(\"File Error\");
}
fin.close();
fout.close();
}
}.
The java program that reads an input file input.txt an.pdf
/*
* The java program that reads an input file input.txt
* and then reads the contens of file.
* the program throws file not found exception if file not found.
* The program throws DimensionMismatchException if mismatch of dimension.
* The program throws NumberFormatException if mismatch of data read.
* */
//FormatChecker.java
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;
public class FormatChecker {
public static void main(String[] args) {
String fileName=\"input.txt\";
//calling checkFormat
checkFormat(fileName);
}
//Method checkFormat that takes string and check for
//errors otherwise reads the file and print to console
private static void checkFormat(String fileName) {
Scanner filescanner=null;
try {
//thorws FileNotFoundException error if file not found
filescanner=new Scanner(new File(fileName));
} catch (FileNotFoundException e) {
System.out.println(e.getMessage());
}
int rows=0;
int cols=0;
double[][] arr;
String dimensions[]=filescanner.nextLine().split(\" \");
try
{
//thorws DimensionMismatchException error if mismatch of dimension
if(dimensions.length>2)
throw new DimensionMismatchException(\"Dimension mismatch\");
} catch (DimensionMismatchException e1) {
e1.printStackTrace();
}
try {
//thorws NumberFormatException error if mismatch of reading values
rows=Integer.parseInt(dimensions[0]);
cols=Integer.parseInt(dimensions[1]);
arr=new double[rows][cols];
System.out.println(\"File contents\");
for (int i = 0; i < arr.length; i++)
{
for (int j = 0; j < arr[i].length; j++)
{
arr[i][j]=filescanner.nextDouble();
System.out.printf(\"%6.1f\",arr[i][j]);
}
System.out.println();
}
} catch (NumberFormatException e) {
System.out.println(e.getMessage());
}
}
}
------------------------------------------------------------------------
//User defined DimensionMismatchException class
//that extends the Exception class
//DimensionMismatchException.java
public class DimensionMismatchException extends Exception {
public DimensionMismatchException(String msg) {
super(msg);
}
}
------------------------------------------------------------------------
input.txt
5 6
2.5 0 1 0 0 0
0 -1 4 0 0 0
0 0 0 0 1.1 0
0 2 0 0 5 0
0 -3.14 0 0 0 0
------------------------------------------------------------------------
File contents
2.5 0.0 1.0 0.0 0.0 0.0
0.0 -1.0 4.0 0.0 0.0 0.0
0.0 0.0 0.0 0.0 1.1 0.0
0.0 2.0 0.0 0.0 5.0 0.0
0.0 -3.1 0.0 0.0 0.0 0.0
Note : DimensionMismatchException class is included
Solution
/*
* The java program that reads an input file input.txt
* and then reads the contens of file.
* the program throws file not found exception if file not found.
* The program throws DimensionMismatchException if mismatch of dimension.
* The program throws NumberFormatException if mismatch of data read.
* */
//FormatChecker.java
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;
public class FormatChecker {
public static void main(String[] args) {
String fileName=\"input.txt\";
//calling check.
Similar to JAVA Q2- Write a program that reads strings from the user and writes t.docx (20)
Hi, I need help with a java programming project. specifically practi.pdf
Hi, I need help with a java programming project. specifically practi.pdf
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Write a program in java that asks a user for a file name and prints .pdf
Write a program in java that asks a user for a file name and prints .pdf
I can not get my code to comply it gets mad that I have run declare mo.docx
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Use Java to program the following.1. Create public java class name.pdf
Use Java to program the following.1. Create public java class name.pdf
In JavaWrite a program that reads a file and counts how many line.pdf
In JavaWrite a program that reads a file and counts how many line.pdf
2. Write a program which will open an input file and write to an out.pdf
2. Write a program which will open an input file and write to an out.pdf
The java program that reads an input file input.txt an.pdf
The java program that reads an input file input.txt an.pdf
More from michael1810
Judging from their relative positions in the Periodic Table- which ato.docx
Judging from their relative positions in the Periodic Table, which atom in each set is more
electronegative?
(a) Carbon or nitrogen (b) Chlorine or bromine (c) Oxygen or sulfur
Solution
a) carbon and nitrogen
Ans - Nitrogen
both carbon and nitrogen belong to II nd period of periodic table in same period trend of electronegattivity is from left to right electronegativity increases. nitrogen is one place right from carbon therefore nitrogen in more electronegative than carbon.
b) Chlorine and bromine
Ans - Chlorine
Chlorine and bromine belong to same group of halogen familly trend for elecronegativity in same group is from up to down electronegativity decreases. bromine is down than chlorine in group therefore bromine have less electronegativity and chlorine have more electronegativity than bromine.
c) Oxygen and sulfur
Ans - Oxygen
oxygen and sulfur belong to same group of 6A trend for elecronegativity in same group is from up to down electronegativity decreases. sufur is down than oxygen in group therefore sulfur have less electronegativity and oxygen have more electronegativity than sulfur.
.
John Corporation has three investments that are classified as noncontr.docx
John Corporation has three investments that are classified as noncontrolling.
1.A bond investment, purchased on Jan 1, 2014 and maturing on Dec. 31, 2020. They purchased them to help out the company and the interest income was quite high.
2. An investment in Mark Company stock, purchased on Dec. 1, 2014 because the price was low and John Corp. had some excess cash to invest. John Corporation\'s investment manager did not like taking risk or playing the market on an active basis.
3. An investment in 25% of the stock of Smith Company, a new customer who was experiencing management difficulties that affected their profitability. John Corp. intended to keep this investment for as long as it took to stabilize the company.
Answer the following questions about these investments.
1. The investment in bonds should be classified as:
Select one:
a. held-to-maturity securities
b. trading securities
c. significant influence securities
d. available-for-sale securities
2. The investment in Mark Company stock should be classified as:
Select one:
a. trading securities
b. available-for-sale securities
c. significant influence securities
d. held-to-maturity securities
3. The investment in Smith Company stock should be classified as:
Select one:
a. held-to-maturity securities
b. trading securities
c. available-for-sale securities
d. significant influence securities
Solution
Bonds are d. available-for-sale securities
Reason is that they were bought to help out other company rather than making money out of it.
Investment in Mark company is reffered to as d. held-to-maturity securities
Investment in Smith Company is reffered to as d. significant influence securities as these stocks amount to 25%. Stock holing of 20 to 50% is refferef to as Significant influence securities.
.
John Smith worked in the stockyard of a large building supply company-.docx
John Smith worked in the stockyard of a large building supply company. One day he unexpectedly left for California, never to return. His foreman seized the opportunity to continue to submit time cards for John to the payroll department. Each week, as part of his normal duties, the foreman received the employee paychecks from payroll and distributed them to the workers on his shift. Because John was not present to collect his paycheck, the foreman forged John
Solution
In the given circumstances, these two internal controls can be implemented to prevent & detect fraud-
1. The practice of giving paychecks to the foreman should be done away with. Instead each employee should personally visit the payroll department, put his signature and then collect his or her paycheck.
2.For attendance purpose also the employees should visit the payroll department where the time keeper will personally accept each one\'s time card. Time card furnished through a colleage or friend should never be accepted.
.
John has tremendous technical skills and frequently comes up with valu.docx
John has tremendous technical skills and frequently comes up with valuable ideas. However, he has little idea how to promote it within the organization. John is a good example of
a.
an inventor.
b.
an idea champion.
c.
a sponsor.
d.
a critic.
e.
an in-transition employee.
Solution
a.
Inventor is the one who develops and understands technical aspects of idea. Inventor has no knowledge or less knowledge of converting the idea into a business.
Though John has a tremendous technical skills but he has little knowledge of promoting the idea. Thus, he is an INVENTOR.
.
Joe Frecaso was recently hired as the controller for Larson Cement Com.docx
Joe Frecaso was recently hired as the controller for Larson Cement Company after the previous controller was killed in a boating accident in Biscayne Bay. That controller had been with the company since it first opened its doors. Joe spends most of his time in the back office that has a panoramic view of
Solution
1. Frank and Joe have realized that the checks payable to Mary Waters is being done fraudently. Betty is responsible for the checkbooks and she keeps the checkbook locked in safe. So it is quite clear that Betty has been fraudently writing the checks being paid to Mary Waters and Frank and Joe are quite on target at this assumption.
However, they could do better by confronting Betty and initiating a legal suit against her for causing losses to the company. They should be more aggressive and action-oriented than just putting a camera at her office and conducting an audit. She should be immediately confronted, enquired upon and if found guilty of these wrong doings should be immediately fired. Subsequently, legal action should be taken against her.
2. Clearly the internal control processes is quite weak at Larson\'s Cement. Joe, as the controller, should be knowing the accounting and finance department\'s workings in and out. However, he was shocked to learn about the account being overdrawn. Its just Frank, the current CEO, who seems to be hands on. Other employees also need to be more hands on, specially Joe who is responsible for the company\'s control process. Its no excuse that Betty is responsible for the checks, so she should be the only one having information about them. This is a clear gap in the control system of the company, inviting wrong doings by the employees. This gap needs to be filled.
.
Java Write a method that takes as a parameter a one dimensional array.docx
Java Write a method that takes as a parameter a one dimensional array of characters and moves all characters ’*’ to the end
(high indexes) of the array. If the original array is
’a’ ’b’ ’*’ ’d’ ’z’ ’*’ ’*’ ’p’
then your method should produce
’a’ ’b’ ’d’ ’z’ ’p’ ’*’ ’*’ ’*’
The relative positions of the other characters should remain unchanged.
REMEMBER : Write a complete method (including methods signature with parameters and return type). DO NOT write a complete
program with main, etc. Your method should manipulate the array that is passed to it.
Solution
public class MoveStar {
public static void moveStar(char[] arr){
if(arr == null)
return;
int j = -1;
for(int i=0; i<arr.length; i++){// skipping star
if(arr[i] !=\'*\'){
arr[++j] = arr[i];
}
}
while(++j < arr.length)// filling remaining position with *
arr[j] = \'*\';
}
public static void main(String[] args) {
char[] arr = {\'a\', \'b\' ,\'*\' ,\'d\' ,\'z\',\'*\', \'*\' ,\'p\'};
moveStar(arr);
for(char c: arr)
System.out.print(c+\" \");
}
}
.
Java Programming- 1) Write a recursive method that finds and returns t.docx
Java Programming:
1) Write a recursive method that finds and returns the sum of the elements in an int array. Also, write a program to test your method
** Please simple enough for a beginner to understand
Solution
/**
* @author
*
*/
public class RecusrsiveArraySum {
/**
* @param args
*/
public static void main(String[] args) {
int arr[] = { 3, 4, 6, 7 };
System.out
.println(\"Sum of array Elements: \" + sum(arr, arr.length - 1));
}
/**
* recursive sum of array elements
*
* @param array
* @param index
* @return
*/
public static int sum(int[] array, int index) {
// if array is empty
if (index < 0)
return 0;
if (index == 0) {
// when no index reaches first element
return array[0];
} else {
// adding array elements
return array[index] + sum(array, index - 1);
}
}
}
OUTPUT:
Sum of array Elements: 20
.
Java Language Which of the following statements is true- Select all th.docx
Java Language
Which of the following statements is true? Select all that apply.
Select one or more:
1.Data maintained in files is often called transient data.
2.Data is lost when a local variable “goes out of scope.â€
3.Files are used for long-term retention of large amounts of data.
4.Storage of data variables and arrays is temporary.
Which of the following classes enable input and output of entire objects to or from a file? Select all that apply,
Select one or more:
1.Scanner
2.Formatter
3.ObjectInputStream
4.SerializedOutputStream
5.SerializedInputStream
6.ObjectOutputStream
A serialized object is ________.
Select one:
1.an object in memory that has been recreated from data in a file
2.a standard output stream object used to convert objects in code to data in a file
3.an object represented as a sequence of bytes used to store the object’s data in a file
4.none of the above
Thank you!
Solution
1) Data mainatined in files is often called transient data.
2) Scanner
3) an object represented as a sequence of bytes used to store the object\'s data in a file
.
It-'s virtualization topic Would anyone please expalin what is the di.docx
It\'s virtualization topic
Would anyone please expalin what is the different between these partitioning approaches??
Solution
The comparision is given below:
Bare-Metal Architecture:
1) Here administrator is not required to install the server\'s operating system.
2) Its does not have good hardware compatibility, becuase here we do not have OS here.
3) Here we have limited hardware support.
4) Its provides better performance, efficiency as well as the stability.
5) This architecture suit for various types of data centers, as its give good performance and stability
Hosted Architecture:
1) Here its required to first install the server\'s operating system.
2) Its provide better hardware compatibility, as its having Operating System to handle the hardware.
3) Here we do not have limit on hardware support.
4) Not very good performance as well as stability as compare to Bare-Metal.
5) Does not suits for the data centers becuase of low performance.
.
For each pair of substance identify the substance that is likely to ha.docx
For each pair of substance identify the substance that is likely to have the lower vapor pressure. Using IMF to explain your reasoning.
a. CO 2 or XeF 2
b. CH 3 OH or CH 3 -O-CH 3
Solution
Always remeber VAPOUR PRESSURE TENDS TO DECREASE AS THE INTERMOLECULAR FORCES INCREASES.
a. CO 2 and XeF 2 both are non polar but in case XeF 2 there are more lone pairs on the central atom which cause lone pair-lone pair repulson and bonds are easily broken so XeF 2 will have less intermolecular force of attraction while CO 2 having low vapour pressure as double bonds are holding 2 oxygen atoms to carbon atom having higher intermollecular force so CO 2 will have low vapour pressure.
b.CH 3 OCH 3 will have the higher vapor pressure. . CH 3 OH can hydrogen bond. CH 3 OCH 3 is polar (bent shape around the oxygen), so dipole-dipole forces will be the strongest forces in this compound.
.
For each of the requirements listed in the table below- 1- Please iden.docx
For each of the requirements listed in the table below,
1 . Please identify it as functional requirement or non-functional requirement.
2 . Please provide an explanation for every non-functional requirement that you identified.
Solution
Non-functional requirements describe how the system works , while functional requirements describe what the system should do .
Typical non-functional requirements are:
F:Functional
NF: Non-Functional
.
For Contingent Liability- When do you disclose it- When do you record.docx
For Contingent Liability:
When do you disclose it?
When do you record it?
When do you ignore it?
Solution
Contingent liabilites can be divided into three classifcations:
-Remote - There is a remote possibility that this will become a liability. A perfect example of this would be a frivolous lawsuit filed against your company with no sound legal reasoning. Those that are remote should be ignored.
-Possible - It is possible for this to become a liablity, but possibly not during this accounting cycle. Many companies list these possible liabilites in the footnotes of their year-end financial statements, but are not show on any of the actual statments as a liability. If it is possible, it should be disclosed.
-Probable - In this circumstance, the proposed liability is more than likely going to become a current or long-term liability. This may include an out-of court settlement where the company will be forced to pay a sum of money. Because it is probable, it should both be disclosed and recorded on the financial statements.
Hope this helps!
.
For each of the abstract data types (ADTs) that we have analyzed in th.docx
For each of the abstract data types (ADTs) that we have analyzed in this class we have implemented each of them in two different ways (Array-Based and Link-Based). Describe each of these implementations and discuss the differences between them.
Solution
Abstract data types can be implemented using array or linked list. but there are some major differences. linked list have some advantages over array. an array has some demerits. but a linked list overcomes all these demerits.
Difference between Array Linked list :
Array is a collection of homogeneous elements.it is a linear data structure. array have fixed size. once its size is declared, it cannot grow or shrink in size during execution. it has static memory of allocation. it stores data in contiguous memory locations. array is easily accessible. but it is difficult to perform insertion and deletion operations on an array.because during insertion or deletion each element after the specified element need to be moved one position right or left.
Linked list is another way of storing elements in memory.it is a collection of data items called nodes. each node is divided into two parts called data field and pointer field. data field contains the element and pointer field contains the address of the next node in the list. the pointer field of the last node contains null value.
it is a non-linear data structue. it doesn\'t require contiguous memory to store data in memory. it has dynamic memory of allocation. a linked list can grow or shrink in size during execution for its lifetime. the operations like insertion and deletion is easy to perform on linked list. because it stores data in non-contiguous memory location,so shifting of elements is not required.
**************** THANKS ********************** PLS GIVE GOOD FEEDBACK*********************************************
.
For each form of transport plot the value of overall benefits against.docx
For each form of transport plot the value of overall benefits against cost and hence identify the forms of transport that lie on the efficient frontier
Solution
Of course, no matter what form a tax takes, it is still a transfer payment-whether a direct tax on income or an indirect tax such as a sales tax, an excise tax, or a tariff or duty on an imported input for production. But some caution is advisable here. Taxes that are treated as a direct transfer payment are those representing a diversion of net benefit to the society. Quite often, however, government charges for goods supplied or services rendered may be called taxes. Water rates, for example, may be considered a tax by the farmer, but from the standpoint of the society as a whole they are a payment by the farmer to the irrigation authority in exchange for water supplied. Since building the irrigation system reduces national income, the farmer\'s payment for the water is part of the cost of producing the crop, the same as any other payment for a production input. Other payments called taxes may also be payments for goods and services rendered rather than transfers to the government. A stevedoring charge at the port is not a tax but a payment for services and so would not be treated as a duty would be. Whether a tax should be treated as a transfer payment or as a payment for goods and services depends on whether the payment is a compensation for goods and services needed to carry out the project or merely a transfer, to be used for general social purposes, of some part of the benefit from the project to the society as a whole.
.
Fluid Mechanics The water surface is at the position shown at t - 0 se.docx
Fluid Mechanics
The water surface is at the position shown at t = 0 seconds. What is the rate of rise or fall velocity of the water at t = 19 seconds? What is it at t = 21 seconds?
Solution
From the conservation of mass
rho*Ai*V1 = rho*A*dh/dt + rho*Ae*V2
A*dh/dt = Ai*V1 - Ae*V2
D^2*dh/dt = Di^2*V1 - De^2*V2
144*dh/dt = 144*1 - 36*2
dh/dt = 0.5
dh = 0.5*dt
Integrating
h-h0 = 0.5*t
Where ho is the initial height
Delta(h) = 0.5*t
When t = 19 sec
Rise in water level is
Delta(h) at t = 19 sec = 0.5*19 = 9.5 ft
When t = 21 sec
delta(h) = 10.5 ft
Since the 10.5 >10 it will go to bigger tank then the rise is height is different
delta(h) = 10 + h1
let us calcualate h1
Let\'s find in this way
Assume that the entire tube is of at 12 in diameter and find the volume for this 0.5 ft extra
and now replace the same volume of water with bigger diameter of pipe
A*0.5 = A2*h1
12^2*0.5 = 24^2*h1
h1 = 0.125 ft
Delta(h) = 10.125 ft
.
Fluctuation in inflation can occur in the short or long term- For exam.docx
Fluctuation in inflation can occur in the short or long term. For examle, rice levels can increase and decrease on a month to month aisis and we can also evaluate inflation rates over time. Therefore, while it may be hard to redict the economic change it can be tracked over different time periods. One way we can think about inflation is that because of a loss in purchasing ower, there is basically a lower payout to investors. Are there any investing strategies that can be taken in order to rotect against this risk?
Solution
Investing startegies that can be taken to protect against inflation risk:-
1) Investing smartly in all types of investements like shares, real estate and golds . It will reduce the risk of inflation.
2) Short term investement in stocks and booking the profit instead of long terms.
3) Bonds are the most sensitive in the inflation, we should be extra careful with that.
4) Investors should maintain the portfolio highly flexible and liquidable during inflation.
.
First National Bank charges 11-2 percent compounded monthly on its bus (1).docx
First National Bank charges 11.2 percent compounded monthly on its business loans. First United Bank Charges 11.4 Percent compounded semiannually. Calculate the EAR for each bank. For each of the following annuities, calculate the annual cash flow.
Solution
First National Bank, r = 11.2 %, m = 12
EAR =( 1+ 11.2%/12) 12 -1Â Â = 11.79%
First United Bank, r = 11.4%, m = 2
= (1 + 0.114/2) 2 - 1 = 0.1172 or 11.72%
.
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- 1. JAVA Q2: Write a program that reads strings from the user and writes them to an output file called userStrings.txt. Stop processing when the user enters the string "DONE". Do not write the sentinel string ("DONE") to the output file. [15 points] Hint: For a complete example of file IO, please see the attached TestData program. Sample Output: A string. Another string. Yet more text... DONE Solution Answer import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.util.Scanner; class WriteStringFile { public static void main(String[] args) { File file = new File("D:/userFile.txt"); String data;
- 2. Scanner input = new Scanner(System.in); data = input.readLine(); try (FileOutputStream fop = new FileOutputStream(file)) { // if file doesn't exists, then create it if (!file.exists()) { file.createNewFile(); } if (data != "DONE") { // get the content in bytes byte[] contentInBytes = content.getBytes(); fop.write(contentInBytes); fop.flush(); fop.close(); } else { System.out.println("User Enter the value Done.. So unable to write into file"); } } catch (IOException e) { e.printStackTrace(); } } }