The Java Program for the above given isimport java.io.File;impo.pdf

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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(); } } }.

Education

Similar to The Java Program for the above given isimport java.io.File;impo.pdf

Modify the Total program so that it writes the values in two columns, like this: Previous answer Chegg provided displayed the correct output for in.txt but now, how do I make the empty blank as shown? Previous solution provided by Chegg: import java.io.File; import java.io.FileNotFoundException; import java.io.PrintWriter; import java.util.Scanner; public class Total { public static void main(String[] args) throws FileNotFoundException { Scanner console = new Scanner(System.in); System.out.print("Input file: "); String inputFileName = console.next(); String outputFileName = "out.txt"; File inputFile = new File(inputFileName); Scanner in = new Scanner(inputFile); PrintWriter out = new PrintWriter(outputFileName); double total = 0; while (in.hasNext()) { double value1 = in.hasNextDouble() ? in.nextDouble() : 0; double value2 = in.hasNextDouble() ? in.nextDouble() : 0; out.printf("%8.2f %7.2f%n", value1, value2); total += (value1 + value2); } out.printf("Total: %10.2f%n", total); in.close(); out.close(); } } Your file content Your program produced no output Expected file content 1: Compare output Output differs. See highlights below. Special character legend 2: Compare output A Input in2.txt.

Modify the Total program so that it writes the values in two columns.pdf

saxenaavnish1

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.

import java.io.BufferedReader;import java.io.File;import java.io.pdf

manojmozy

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(); } } } .

JAVA Q2- Write a program that reads strings from the user and writes t.docx

michael1810

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.

Here is my code for a linefile editor import java.io.BufferedRea.pdf

pratyushraj61

Below is my code for a line 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 Main { public static List lines = new ArrayList(); public static void main(String[] args) throws IOException { Scanner s = new Scanner(System.in); System.out.print("Input file: "); 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) { lines.add(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)); } } The output should look like this: EDIT: textin.txt (user inputs textin.txt) 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 //This is now line 5; not 3; 5> D 2 // line 5, since L was issued from line 5; 4> L //line 4, since one line was deleted; 1> The first line 2> The second line 3> One more line 4> And another line 5> E Here is a screenshot of the errors I am getting and need help fixing them: FileEdit [Java Application] /Users/caseysharp/.p2/pool/plugins/org.eclipse.justj.openjdk.hotspot.jre.full.mac EDIT: textin.txt 1> The First line 1> 2> And another line 3> I 3 3> The second line Exception in thread "main" java..

Below is my code for a line editor import java.io.BufferedReader;.pdf

alankarshoe84

DisplayBook.java import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.util.Scanner; public class DisplayBook { public static void main(String[] args) throws IOException { // TODO Auto-generated method stub Scanner scan = new Scanner(System.in); File file = new File(\"D:\\\\books.txt\"); if(file.exists()){ System.out.println(\"File exists\"); FileInputStream fis = new FileInputStream(file); int content; while ((content = fis.read()) != -1) { System.out.print((char) content); } fis.close(); } else{ System.out.println(\"File does not exist\"); String titles = \"\"; FileOutputStream fop = new FileOutputStream(file); while(true){ System.out.println(\"Enter Book Title (none to exit):\"); String title = scan.nextLine(); if(title.equalsIgnoreCase(\"none\")){ break; } else{ titles = titles + title +\"\ \"; } } byte[] contentInBytes = titles.getBytes(); fop.write(contentInBytes); fop.flush(); fop.close(); } } } Output: File does not exist Enter Book Title (none to exit): Physics Enter Book Title (none to exit): Chemistry Enter Book Title (none to exit): Science Enter Book Title (none to exit): Maths Enter Book Title (none to exit): none -------------------------------------- File exists Physics Chemistry Science Maths Solution DisplayBook.java import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.util.Scanner; public class DisplayBook { public static void main(String[] args) throws IOException { // TODO Auto-generated method stub Scanner scan = new Scanner(System.in); File file = new File(\"D:\\\\books.txt\"); if(file.exists()){ System.out.println(\"File exists\"); FileInputStream fis = new FileInputStream(file); int content; while ((content = fis.read()) != -1) { System.out.print((char) content); } fis.close(); } else{ System.out.println(\"File does not exist\"); String titles = \"\"; FileOutputStream fop = new FileOutputStream(file); while(true){ System.out.println(\"Enter Book Title (none to exit):\"); String title = scan.nextLine(); if(title.equalsIgnoreCase(\"none\")){ break; } else{ titles = titles + title +\"\ \"; } } byte[] contentInBytes = titles.getBytes(); fop.write(contentInBytes); fop.flush(); fop.close(); } } } Output: File does not exist Enter Book Title (none to exit): Physics Enter Book Title (none to exit): Chemistry Enter Book Title (none to exit): Science Enter Book Title (none to exit): Maths Enter Book Title (none to exit): none -------------------------------------- File exists Physics Chemistry Science Maths.

DisplayBook.java import java.io.File; import java.io.FileInput.pdf

sudheerforce

Write a Java program that opens the file, reads all the Grade from the file, and using a method calculates and displays the following A) Displays the grades with their letter values (80 - B) B) the sum of the Grades in the file C) the average of the Grades in the file Solution GradeRead.java import java.io.File; import java.io.FileNotFoundException; import java.util.Scanner; public class GradeRead { public static void main(String[] args) throws FileNotFoundException { Scanner scan1 = new Scanner(System.in); System.out.print(\"Enter the file name: \"); String fileName = scan1.next(); File file = new File(fileName); if(file.exists()){ Scanner scan = new Scanner(file); calculateGradeDetail(scan); } else{ System.out.println(\"Input does not exist\"); } } public static void calculateGradeDetail(Scanner scan){ int sum = 0; int count = 0; char gradeLetter = \'\\0\'; while(scan.hasNextInt()){ count++; int n = scan.nextInt(); sum = sum + n; if(n >=90 && n<=100){ gradeLetter = \'A\'; } else if(n >=80 && n<90){ gradeLetter = \'B\'; } else if(n >=70 && n<80){ gradeLetter = \'C\'; } else if(n >=60 && n<=70){ gradeLetter = \'D\'; } else { gradeLetter = \'E\'; } System.out.println(\"Grade: \"+gradeLetter+\" - \"+n); } System.out.println(\"The sum of the Grades in the file: \"+sum); double average = sum/(double)count; System.out.println(\"the average of the Grades in the file: \"+average); System.out.println(); } } Output: Enter the file name: D:\\\\grade.txt Grade: D - 60 Grade: C - 70 Grade: B - 80 Grade: A - 90 Grade: A - 100 Grade: E - 40 Grade: E - 50 Grade: D - 60 The sum of the Grades in the file: 550 the average of the Grades in the file: 68.75 Grade.txt 60 70 80 90 100 40 50 60.

Write a Java program that opens the file, reads all the Grade from t.pdf

fashiionbeutycare

Factors.java import java.io.*; import java.util.Scanner; class Factors { public static void main(String args[]) { int a,i; Scanner in = new Scanner(System.in); System.out.println(\"Enter an integer\"); a = in.nextInt(); System.out.println(\"You entered integer \"+a); System.out.print(\"\ \"); System.out.print(\"The factors are : \"); for(i=1;i<=a/2;i++) { if(a%i==0) System.out.print(i+\",\"); } System.out.print(a); } } Output: Enter an integer 44 You entered integer 44 The factors are : 1,2,4,11,22,44 Solution Factors.java import java.io.*; import java.util.Scanner; class Factors { public static void main(String args[]) { int a,i; Scanner in = new Scanner(System.in); System.out.println(\"Enter an integer\"); a = in.nextInt(); System.out.println(\"You entered integer \"+a); System.out.print(\"\ \"); System.out.print(\"The factors are : \"); for(i=1;i<=a/2;i++) { if(a%i==0) System.out.print(i+\",\"); } System.out.print(a); } } Output: Enter an integer 44 You entered integer 44 The factors are : 1,2,4,11,22,44.

Factors.javaimport java.io.; import java.util.Scanner; class .pdf

deepakangel

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. .

I can not get my code to comply it gets mad that I have run declare mo.docx

hamblymarta

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); } } .

Write a program that will count the number of characters- words- and l.docx

lez31palka

Java Program I keep receiving the following error in my code. Can you please fix this error and test to make sure it does not show a error? I've placed bracets but keep receiving the error "reached end of file while parsing private static void displayStudent()" See below Error: sh -c javac -classpath .:target/dependency/* -d . $(find . -type f -name '*.java') ./Main.java:121: error: reached end of file while parsing private static void displayStudent() ^ 1 error exit status 1 ------------------------------------------ Code: import java.util.Scanner; import java.io.File; import java.io.FileWriter; import java.io.IOException; public class StudentCourseProgram { public static void main(String[] args) { Scanner input = new Scanner(System.in); int choice; do { System.out.println("Please choose an option:"); System.out.println("1. Add student"); System.out.println("2. Add course"); System.out.println("3. Display student"); System.out.println("4. Display course"); System.out.println("5. Exit"); choice = input.nextInt(); switch (choice) { case 1: addStudent(); break; case 2: addCourse(); break; case 3: displayStudent(); break; case 4: displayCourse(); break; case 5: System.out.println("Exiting program..."); break; default: System.out.println("Invalid option. Please try again."); } } while (choice != 5); } private static void addStudent() { Scanner input = new Scanner(System.in); System.out.println("Adding a student..."); System.out.print("Enter student ID: "); int id = input.nextInt(); System.out.print("Enter student first name: "); String firstName = input.next(); System.out.print("Enter student last name: "); String lastName = input.next(); System.out.print("Enter student address: "); String address = input.next(); System.out.print("Enter student city: "); String city = input.next(); System.out.print("Enter student state: "); String state = input.next(); System.out.print("Enter student zip code: "); int zip = input.nextInt(); try { FileWriter writer = new FileWriter("student.txt", true); Scanner reader = new Scanner(new File("student.txt")); while (reader.hasNextLine()) { String line = reader.nextLine(); String[] parts = line.split(","); if (Integer.parseInt(parts[0]) == id) { System.out.println("Error: Student with that ID already exists."); return; } } writer.write(id + "," + firstName + "," + lastName + "," + address + "," + city + "," + state + "," + zip + "\n"); System.out.println("Student added successfully."); reader.close(); writer.close(); } catch (IOException e) { System.out.println("Error: " + e.getMessage()); } } private static void addCourse() { Scanner input = new Scanner(System.in); System.out.println("Adding a course..."); System.out.print("Enter course ID: "); int id = input.nextInt(); System.out.print("Enter course name: "); String name = input.next(); System.out.print("Enter course description: "); String description = input.next(); try { FileWriter writer = new FileWriter("course.txt", true); Scanner reader = new Scanner(new Fil.

Java Program I keep receiving the following error in my code- Can you.pdf

File Handling.pptx

54240326 (1)

54240326 copy

The sample program for above series in JAVA will be like below import java.util.Scan; public class PIVALUE { public static void main(String[] args) { // Scan object creation Scan input = new Scan (System.in); // ask user for input System.out.println(\"Enter num.\"); double j = input.nextDouble(); // user entered value of j double Tot = 0; for(j=0; j<10000; j++){ if(j%2 == 0) // check remainder of `j/2` is 0 Tot += -1 / ( 2 * j - 1); else Tot += 1 / (2 * j - 1); } System.out.println(Tot); } } Solution The sample program for above series in JAVA will be like below import java.util.Scan; public class PIVALUE { public static void main(String[] args) { // Scan object creation Scan input = new Scan (System.in); // ask user for input System.out.println(\"Enter num.\"); double j = input.nextDouble(); // user entered value of j double Tot = 0; for(j=0; j<10000; j++){ if(j%2 == 0) // check remainder of `j/2` is 0 Tot += -1 / ( 2 * j - 1); else Tot += 1 / (2 * j - 1); } System.out.println(Tot); } }.

The sample program for above series in JAVA will be like belowimpo.pdf

rajat630669

The sample program for above series in JAVA will be like belowimpo.pdf

rajat630669

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(); } }.

2. Write a program which will open an input file and write to an out.pdf

rbjain2007

java input & output statements

VigneshManikandan11

ExtraFileIO.pptx

NguynThiThanhTho

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 help me with a UML class diagram for the following code im.pdf

aioils

Similar to The Java Program for the above given isimport java.io.File;impo.pdf (20)