應用名稱：Java簡單的音樂播放器

用到的知識：Java GUI程式設計，執行緒，IO

開發環境：win8+eclipse+jdk1.8

功能說明：可以選擇內建的音樂檔案播放，迴圈播放，停止。PS：這個播放器只能播放.au .aiff .wav .midi .rfm格式的音訊。

效果圖：

原始碼：

import java.applet.AudioClip;
import java.awt.*;
import java.net.*;
import java.awt.event.*;
import java.io.*;
import java.applet.*;
import javax.swing.*;

import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JDialog;

public class MusicPlayer extends JDialog implements Runnable,ItemListener,ActionListener{
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	Thread thread;
	JComboBox<Serializable> choiceMusic;
	AudioClip clip;
	JButton buttonPlay,buttonLoop,buttonStop;
	String str;
	MusicPlayer(){
		thread=new Thread(this);
		choiceMusic=new JComboBox();
		choiceMusic.addItem("選擇音訊檔案");
		choiceMusic.addItem("src/1.wav");
	    choiceMusic.addItem("‪2.wav");
		choiceMusic.addItem("3.wav");
		choiceMusic.addItemListener(this);
		buttonPlay=new JButton("播放");
		buttonLoop=new JButton("迴圈");
		buttonStop=new JButton("停止");
		buttonPlay.addActionListener(this);
		buttonLoop.addActionListener(this);
		buttonStop.addActionListener(this);
		setLayout(new FlowLayout());
		add(choiceMusic);
		add(buttonPlay);
		add(buttonLoop);
		add(buttonStop);
		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
		setSize(350,80);
	}
	
	@Override
	public void actionPerformed(ActionEvent e) {
		if(e.getSource()==buttonPlay)
			clip.play();
		else if(e.getSource()==buttonLoop)
			clip.loop();
		else if(e.getSource()==buttonStop)
			clip.stop();
		
	}

	@Override
	public void itemStateChanged(ItemEvent arg0) {
		str=choiceMusic.getSelectedItem().toString();
		if(!(thread.isAlive())){
			thread=new Thread(this);
		}
		try{thread.start();
		}
		catch(Exception ee){}
	}

	@Override
	public void run() {

		try {		
		File file=new File(str);
		URI uri=file.toURI();
		URL url=uri.toURL();
		clip=Applet.newAudioClip(url);

		} catch (MalformedURLException e) {
		}
	}
	public static void main(String[] args) {
		MusicPlayer musicplayer=new MusicPlayer();
		musicplayer.setVisible(true);
	}
}