Chapter 17 Exercise 1, Introduction to Java Programming, Tenth Edition Y. Daniel LiangY.

17.1 (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 100
integers created randomly into the file using text I/O.
Integers are separated by a space.
Created by luizsa on 10/5/14.

import java.io.*;

public class Exercise_01 {

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

        File file = new File("Exercise17_01.txt");

        boolean append = file.exists();

        try (PrintWriter printWriter = new PrintWriter(new BufferedOutputStream(new FileOutputStream(file, append)))) {

            for (int i = 0; i < 100; i++) {
                printWriter.write((int) (Math.random() * (Integer.MAX_VALUE + 1L)) + " ");
            }
        }
    }
}