test.java

在java中编制小的应用程序来播放mid 音乐

import java.awt.*;
import java.awt.event.*;
class fr extends Frame implements ActionListener{
     MidiPlayer p;
     Button b1,b2,b3;
     public fr(){
        super("123");
        setLayout(new FlowLayout());
        p=new MidiPlayer("sound.mid");
        if(p.m_bOk==false)System.exit(0);
        b1=new Button("循环");
        b2=new Button("结束");
        b3=new Button("播放");
        
        add(b1);
        add(b2);
        add(b3);
        b1.addActionListener(this);b2.addActionListener(this);b3.addActionListener(this);
        addWindowListener(new WindowAdapter(){
                           public void windowClosing(WindowEvent e){
                                setVisible(false);
                                System.exit(0);
                           }
                           });
       setSize(200,200);
       setVisible(true);
    }
    public void actionPerformed(ActionEvent e){
       if(e.getSource()==b1){
          p.loop();
       }
       else if(e.getSource()==b2){
          p.stop();
       }
       else if(e.getSource()==b3)p.play();
    }
}
public class test{
       public static void main(String args[]){
           fr f=new fr();
       }
}