Matrix Java Program

package net.acomputerdog.PPII;

import java.util.Random;

public class Matrix {
    public static void main(String[] args) {
        Random random = new Random("Null".hashCode());
        while (true) {
            for (int count = 0; count < 80; count++) {
                if (random.nextInt(4) == 0) {
                    System.out.print((char)(97 + random.nextInt(26)));
                } else {
                    System.out.print(' ');
                }
            }
            System.out.println();
            try {
                Thread.sleep(10);
            } catch (InterruptedException ignored) {

            }
        }
    }
}