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´´½¨°´Å¥ÐèÒªÀûÓÃJButtonÀ࣬JButtonÀàÖг£Óõķ½·¨ÓУº public JButton() //´´½¨Ò»¸öûÓбê¼ÇµÄ¿Õ°´Å¥ public JButton(Icon icon) //´´½¨Ò»¸ö±êÓÐÖ¸¶¨Í¼±êµÄ°´Å¥

public JButton(String text) //´´½¨Ò»¸ö±êÓÐÖ¸¶¨ÎÄ×ֵİ´Å¥

public JButton(String text ,Icon icon) //´´½¨Ò»¸ö±êÓÐÖ¸¶¨ÎÄ×ÖºÍͼ±íµÄ°´Å¥ 2)±êÇ©

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±êÇ©Óë°´Å¥Ïàͬ£¬±êǩҲ¿ÉÒÔÏÔʾһ´®ÎÄ×Ö»òͼÏñ¡£´´½¨±êÇ©ÐèÒªÀûÓÃJLabelÀà¡£JLabelÀàÖг£ÓõĹ¹Ôì·½·¨ÓУº public JLabel() //´´½¨Ò»¸ö¿Õ±êÇ©

public JLabel(Icon image) //´´½¨¾ßÓÐÖ¸¶¨Í¼±êµÄ±êÇ©

public JLabel(Icon image,int horizontalAlignment) //´´½¨¾ßÓÐÖ¸¶¨Í¼±êºÍˮƽ¶ÔÆë·½Ê½µÄ±êÇ© public JLabel(String text) //´´½¨¾ßÓÐÖ¸¶¨ÎÄ×ֵıêÇ©

public JLabel(String text,int horizontalAlignment) //´´½¨¾ßÓÐÖ¸¶¨ÎÄ×ÖºÍˮƽ¶ÔÆë·½Ê½µÄ±êÇ© public

JLabel(String

text,Icon

icon,int

horizontalAlignment)

//´´½¨¾ßÓÐÖ¸¶¨ÎÄ×Ö£¬Í¼±êºÍˮƽ¶ÔÆë·½Ê½µÄ±êÇ© 3Áбí¿ò

ÁбíÒ²ÔÊÐíÓû§´ÓÖнøÐÐÑ¡Ôñ¡£´´½¨ÁбíÐèÒªÀûÓÃJListÀ࣬JListÀàÖг£ÓõĹ¹Ôì·½·¨ÓУº

11

public JList()

//´´½¨Ò»¸öÁÐ±í£¬ÁбíÖеÄÑ¡ÏîΪ¿Õ public JList(Object[] listData)

//´´½¨Ò»¸öÁÐ±í£¬ÁбíÖеÄÑ¡ÏîÓɲÎÊýlistDataÖ¸¶¨

ËÄ .ϵͳʵÏÖ

Ö÷ÀàMUSICPLAYERÀࣺ import java.util.*;

import javax.swing.JSlider; import java.awt.BorderLayout; import java.awt.FlowLayout; import java.awt.Point;

import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.io.BufferedOutputStream; import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException;

import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.io.Serializable;

import javax.media.ControllerEvent; import javax.media.ControllerListener; import javax.media.EndOfMediaEvent; import javax.media.Manager; import javax.media.MediaLocator; import javax.media.NoPlayerException; import javax.media.Player;

import javax.media.PrefetchCompleteEvent; import javax.media.Time;

12

import javax.swing.ButtonGroup; import javax.swing.DefaultListModel; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JFileChooser; import javax.swing.JFrame; import javax.swing.JList; import javax.swing.JMenu; import javax.swing.JMenuBar; import javax.swing.JMenuItem; import javax.swing.JOptionPane; import javax.swing.JPanel;

import javax.swing.JRadioButtonMenuItem; import javax.swing.JScrollBar; import javax.swing.JScrollPane;

import javax.swing.filechooser.FileNameExtensionFilter;

public class MusicPlayer implements ActionListener, Serializable,ControllerListener { private static final long serialVersionUID = 1L; private JFrame frame = null; private JPanel controlPanel = null; private JButton btnPlay = null; private JButton btnPre = null; private JButton btnNext = null; private JScrollPane listPane = null; private JList list = null; private DefaultListModel listModel = null; private JMenuBar menubar = null; private JMenu menuFile = null, menuAbout = null, menuMode = null; private JMenuItem itemOpen, itemOpens, itemExit, itemAbout; private JRadioButtonMenuItem itemSingle, itemSequence ,itemRandom; private ListItem currentItem = null; private static Player player = null; private boolean isPause = false; private int mode; private int currentIndex; private ImageIcon iconPlay = new ImageIcon(\ private ImageIcon iconPre = new ImageIcon(\ private ImageIcon iconNext = new ImageIcon(\ private ImageIcon iconPause = new ImageIcon(\ public static void main(String[] args) { new MusicPlayer(); }

13

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