AppletAnimation.java Source code

Introduction

Here is the source code for AppletAnimation.java

Source

import java.applet.Applet;
import java.awt.Graphics;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

public class AppletAnimation extends Applet implements Runnable {
    int frameNumber = -1;

    int delay = 100;

    Thread animatorThread;

    boolean frozen = false;

    public void init() {
        String str;
        addMouseListener(new MouseAdapter() {
            public void mousePressed(MouseEvent e) {
                if (frozen) {
                    frozen = false;
                    start();
                } else {
                    frozen = true;
                    stop();
                }
            }
        });
    }

    public void start() {
        if (!frozen) {
            if (animatorThread == null) {
                animatorThread = new Thread(this);
            }
            animatorThread.start();
        }
    }

    public void stop() {
        animatorThread = null;
    }

    public void run() {
        Thread.currentThread().setPriority(Thread.MIN_PRIORITY);

        long startTime = System.currentTimeMillis();

        Thread currentThread = Thread.currentThread();

        while (currentThread == animatorThread) {
            frameNumber++;

            repaint();

            try {
                startTime += delay;
                Thread.sleep(100);
            } catch (InterruptedException e) {
                break;
            }
        }
    }

    public void paint(Graphics g) {
        g.drawString("Frame " + frameNumber, 0, 30);
    }
}