e1618.java

java小程序

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import javax.swing.*;
public class E1618 extends JApplet implements Runnable
{
private Container c;
private Image image1,image2,image3,image;
private int sleepTime;
private Thread t;
private int count=0;
public void init()
{
c=getContentPane();
image1=getImage(getDocumentBase(),"gif-0001.gif");
image2=getImage(getDocumentBase(),"gif-0002.gif");
image3=getImage(getDocumentBase(),"gif-0003.gif");
sleepTime=1000;
image=image1;
repaint();
}
public void paint(Graphics g)
{
g.drawImage(image,0,0,100,100,this);
}
public void start()
{
t=new Thread(this);
t.start();
}

public void run()
{
while (true)
{
try
{
Thread.currentThread().sleep(sleepTime);
count++;
if(count%3==0)
image=image1;
else if(count%3==1)
image=image2;
else if(count%4==2)
image=image3;
repaint();
}
catch(InterruptedException e){};
}
}
}