最简单的APPLET问题

zuomingyu2 2009-05-07 01:30:47

applet程序：
package applet1;
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import javax.swing.*;
import java.applet.*;
public class Applet1 extends JApplet implements ActionListener{
JLabel JL1,JL2;
JTextField JF1;
JButton JB1;
AudioClip sounds;
public void init(){
JL1=new JLabel("请输入字符：");
JL1.setBounds(15,15,100,30);
JF1=new JTextField(" ",10);
JF1.setBounds(115,15,60,30);
JB1=new JButton("转换");
JB1.setBounds(190,15,60,30);
JB1.addActionListener(this);
JL2=new JLabel(" ");
JL2.setBounds(15,60,200,30);
Container w1=this.getContentPane();
w1.setLayout(null);
w1.add(JL1);
w1.add(JL2);
w1.add(JB1);
w1.add(JF1);
sounds=getAudioClip(getCodeBase(),"test.mid");
}

public void start(){
sounds.loop();
}

public void stop(){
sounds.stop();
}

public void actionPerformed(ActionEvent e){
char c=JF1.getText().charAt(0);
int asc=(int)c;
JL2.setText("字符"+c+"对应的ASII码为："+asc);
}
}

Html 的

<HTML>
<HEAD>
<TITLE>NO.1</TITLE>
</HEAD>
<BODY>
<HR>
<APPLET CODE="appletviewer Applet1.class" WIDTH=300 heigth=200>
</APPLET>
<HR>
<A HREF="Applet1.java">The source.</A>
</BODY>
</HTML>

.class和HTML是放一起的，但是我打开的时候只显示一块灰色的方块 JVM我装了 IE的设置也OK JER都重新装了都不行这是什么问题，.class换了几个都不行

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