今天编辑了一个播放mid音乐的程序，呵呵， 分享一下我的快乐！ 祝大家学习进步！ import java.awt.event.*; import javax.swing.*; import javax.sound.midi.*; import java.awt.*; import java.io.*;

public class TestPlay extends JFrame implements ActionListener { JButton startButton = new JButton("Start"); JButton stopButton = new JButton("Stop"); Player playBar = new Player(); JLabel label = new JLabel("name",SwingConstants.LEFT); JTextField text = new JTextField("Enter music name:",SwingConstants.RIGHT); public TestPlay() { super("Playing music"); setSize(235,90); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); BorderLayout bord = new BorderLayout(); GridLayout layout = new GridLayout(1,2); JPanel pane1 = new JPanel(); JPanel pane2 = new JPanel(); pane1.setLayout(layout); pane2.setLayout(layout); startButton.addActionListener(this); stopButton.addActionListener(this); startButton.setEnabled(true); stopButton.setEnabled(false); pane1.add(label); playBar.name = text.getText(); pane1.add(text); pane2.add(startButton); pane2.add(stopButton); JPanel pane = new JPanel(); pane.setLayout(bord); pane.add("Center",pane1); pane.add("South",pane2); setContentPane(pane); show(); } public void actionPerformed(ActionEvent evt) { Object src = evt.getSource(); if(src==startButton){ playBar.name = text.getText(); playBar.play(); startButton.setEnabled(false); stopButton.setEnabled(true); } else if(src==stopButton){ playBar.stop(); startButton.setEnabled(true); stopButton.setEnabled(false); } } public static void main(String[] args){ try{ UIManager.setLookAndFeel( UIManager.getSystemLookAndFeelClassName() ); }catch(Exception e){} TestPlay frame = new TestPlay(); } }

class Player implements Runnable { Thread runner; String name = null; Sequencer sound; Sequence soundname; File file; void play(){ if(runner==null){ runner = new Thread(this); runner.start(); } } void stop(){ if(runner!=null) sound.close(); runner = null; } public void run() { try{ sound = MidiSystem.getSequencer(); file = new File(name); soundname = MidiSystem.getSequence(file); sound.open(); sound.setSequence(soundname); sound.start(); while(sound.isRunning()){ try{ Thread.sleep(1000); }catch(Exception e){ System.out.println("some problems happended in this programe"); } } sound.close(); }catch(Exception e){ System.out.println("can't play the music" + e.getMessage()); } } }