Question

(Create a text file) Write a program to create a file named Exercise17_01.txt if it does not exist. Append new data to it if it already exists. Write 150 integers created
randomly into the file using text I/O. Integers are separated by a space.

Answer 1

import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;

public class AppendNumbersToFile {

    public static void main(String[] args) throws IOException {
        PrintWriter pw= new PrintWriter(new FileWriter("Exercise17_01.txt", true));
        for (int i = 0; i < 150; i++) {
            pw.print(((int)(Math.random()*1000)) + " ");
        }
        pw.close();
    }
}