问答题
import java.awt.*;
import java.applet.*;
import java.awt.image.*;
/*
<applet code="ex24_3.class" width=800 height=400 >
</applet>
*/
public class ex24_3 extends Applet implements Runnable {
Image[] images=new Image[4];
Image image;
int IMG onClick=over(this) title=放大Number=3;
int currentImage=0;
Thread thisThread;
public void init(){
for (int x=0;x<IMG onClick=over(this) title=放大Number;x++){
images[x]= getImage(getCodeBase(),"IMG onClick=over(this) title=放大"+x+".gif");
}
image=images[0];
}
public void paint(Graphics g){
g.drawImage(image[0],0,0,null);
}
public void update(Graphics g){
paint(g);
}
public void start(){
thisThread = new Thread(this);
thisThread.start();
}
public void stop(){
thisThread.stop();
thisThread=null;
}
public void run(){
while(true){
currentImage++;
currentImage=IMG onClick=over(this) title=放大Number;
image=images[IMG onClick=over(this) title=放大Number];
repaint();
try{
thisThread.sleep(100);
}
catch (Exception e){}
}
}
}
ex24_3.html
<HTML>
<HEAD>
<TITLE>ex24_3</TITLE>
</HEAD>
<BODY>
<applet code="ex24_3.class" width=800 height=400 >
</applet>
</BODY>
</HTML>