Question

Write a program to create a file named integerFile.txt if it does not exist. Write 100 integers created randomly into the file using text I/O. The random integers should be in the range 0 to 100 (including 0 and 100). Integers should be separated by spaces in the file. Read the data back from the file and display the data in increasing order

This is what I have so far:

import java.io.File;
import java.util.Scanner;
import java.io.PrintWriter;

public class integerFile {
    public static void main (String[] args) throws Exception{
        Scanner input = new Scanner(System.in);
        File file = new File("integerFile.txt");

       try (PrintWriter pw = new PrintWriter(new PrintWriter(file));) {
            for (int i = 0; i < 100; i++) {
                pw.print((int)(Math.random() * 100) + " ");
            }
            pw.close();
        }
        while(input.hasNext()){
           
        }
    }
}

Help finish in Java

Answer 1

import java.io.*;

import java.util.Arrays;

import java.util.Random;

public class FileOperations

{

public static void main(String args[]) throws IOException

{

int randomNumber=0;

try

{

//Java BufferedWriter class is used to write the text to the file

BufferedWriter bw= new BufferedWriter(new FileWriter("D:\\file.txt"));

Random rand= new Random();

for(int i=0;i<100;i++)

{

//random number generator between 0-100 with a space

randomNumber= rand.nextInt(101);

bw.write(Integer.toString(randomNumber));

bw.write(" ");

}

bw.close();

String line;

int[] array= new int[100];

//Java BufferedReader class is used to read the text from a character-based input stream.

BufferedReader br= new BufferedReader(new FileReader("D:\\file.txt"));

while((line= br.readLine())!=null)

{

//split function to spilt the text based on a space

String[] numbers =line.split(" ");

for(int i=0;i<100;i++)

{

array[i]= Integer.parseInt(numbers[i]);

}

//sort array in increasing order

Arrays.sort(array);

System.out.printf("Sorted array in increasing order");

for(int i=0;i<array.length;i++)

{

System.out.println(array[i]);

}

}

}

catch (Exception e) {

// TODO: handle exception

}

}

}

1 import java.io. 2 import j ys; 3 import java.uti1. Random; ava.util.Arra 5 public class FileOperations 7Θ public static void main (String args[]) throws IOException randomNumber=0; int try 10 12 13 //Java BufferedWriter class is used to write the text to the file BufferedWriter bw- new BufferedWriter (new FileWriter ("D:\file.txt")); Random rand= new Random(); for (int i=0;i<100;i++) 15 16 17 18 19 //random number generator between 0-100 with a space randomNumber- rand.nextInt (101) bw.write (Integer.tostring (randomNumber)) bw.write(""); bw.close ) String line; intll array- 2 4 new int [100 1:

//Java BufferedReader class is used to read the text from a character-based input streanm BufferedReader br= new BufferedReader (new FileReader ("D:\\file.txt ")); 25 26 27while ((line br.readLine )) !nul1) 28 29 //split function to spilt the text based on String [ ] numbers =line·split ( " ") ; for (int i=0;i< 100;i++) a space arrayi] Integer.parseInt (numbers [i]) 34 35 36 37 38 39 //sort array in increasing order Arrays. sort (array) System. out.printf("Sorted array in increasing order") for (int i-0:i<array.length:i++) System. out.println (array[i]); 42 catch (Exception e) 46 47 // TODo: handle exception 49

orted array in increasing orderl 2 10 12 13 14 15 16 16 16 17 18 18 18 19 20 21 24 24 24 25 26 29 30 30 30