Draw Dots at Random Locations - Java Language Basics

Java examples for Language Basics:Random

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Description

Draw Dots at Random Locations

Demo Code


import java.awt.Graphics;

import javax.swing.JComponent;

public class Main extends JComponent implements Runnable {
  Thread t;//w w  w .ja  v a  2s .  com

  public void init() {
    t = new Thread(this);
    t.start();
  }

  public void run() {
    try {

      while (true) {
        Thread.sleep(200);
      }
    } catch (Exception e) {
    }

  }

  public void update(Graphics g) {
    paint(g);
  }

  public void paint(Graphics g) {

    int x = (int) (Math.random() * getWidth());
    int y = (int) (Math.random() * getHeight());
    g.fillRect(x, y, 2, 2);

  }
}

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