Question

java applet为什么未初始化小程序

mport java.awt.event.*;
import java.net.*;
import java.awt.*;
import java.applet.*;

public class Show extends Applet implements ActionListener{

String once="file:/D:/QQ/Misc/Sound/Classic/shake.wav";
String lo="file:/C:/Documents and Settings/Administrator/桌面/未命名.gif";
AudioClip onceClip;
Image im;

Button playOnce;
Button stopOnce;
Button playLoop;
Button stopLoop;

boolean playing=false;
boolean looping=false;

public void init() {
try{

onceClip=getAudioClip(new URL(once));
im=getImage(new URL(lo));

}catch(MalformedURLException e){
}

playOnce=new Button("play");
stopOnce=new Button("stop");
stopOnce.setEnabled(false);
playLoop=new Button("show");
stopLoop=new Button("hold");
stopLoop.setEnabled(false);
playOnce.addActionListener(this);
add(playOnce);
stopOnce.addActionListener(this);
add(stopOnce);
playLoop.addActionListener(this);
add(playLoop);
stopLoop.addActionListener(this);
add(stopLoop);

}
public void stop(){
if(playing){
onceClip.stop();
}
}
public void start(){
if(playing){
onceClip.play();
}
}

public void paint(Graphics g) {

if(looping){

g.drawImage(im, 0, 0,this );
}
}

public void actionPerformed(ActionEvent event){
Object source= event.getSource();
if(source==playOnce){

playing=true;
onceClip.loop();
stopOnce.setEnabled(true);
playOnce.setEnabled(false);
return ;
}
if(source==stopOnce){

playing=false;
onceClip.stop();
stopOnce.setEnabled(false);
playOnce.setEnabled(true);
return ;
}
if(source==playLoop){

playing=true;
stopOnce.setEnabled(true);
playOnce.setEnabled(false);
return ;
}
if(source==stopLoop){

playing=false;
stopOnce.setEnabled(false);
playOnce.setEnabled(true);
return ;
}

}
}

Answer 1

您好！
您写的代码没有问题，只是要运行它的话，需要把它放到一个容器中才行，比如JFrame、浏览器等，这样它才能被执行。

Answer 2

看看你的浏览器 允许了吗