RandomFile16.java

import java.io.*;

public class RandomFile16 {

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

        RandomAccessFile numbersFile = new RandomAccessFile("numbers.txt", "rw");
        for (int i = 1; i <= 20; i++) {
            numbersFile.writeBytes(i + "\n");
        }
        numbersFile.close();
        RandomAccessFile readFile = new RandomAccessFile("numbers.txt", "r");
        RandomAccessFile evenFile = new RandomAccessFile("even.txt", "rw");
        RandomAccessFile oddFile = new RandomAccessFile("odd.txt", "rw");

        String line;
        while ((line = readFile.readLine()) != null) {
            int num = Integer.parseInt(line.trim());
            if (num % 2 == 0) {
                evenFile.writeBytes(num + "\n");
            } else {
                oddFile.writeBytes(num + "\n");
            }
        }

        readFile.close();
        evenFile.close();
        oddFile.close();


        System.out.println("Contents of numbers.txt:");
        displayFile("numbers.txt");

        System.out.println("\nContents of even.txt:");
        displayFile("even.txt");

        System.out.println("\nContents of odd.txt:");
        displayFile("odd.txt");
    }


    public static void displayFile(String filename) throws IOException {
        RandomAccessFile file = new RandomAccessFile(filename, "r");
        String line;
        while ((line = file.readLine()) != null) {
            System.out.println(line);
        }
        file.close();
    }
}