java简单媒体播放器源码.txt如果背叛是一种勇气，那么接受背叛则需要更大的勇气。爱情是块砖，婚姻是座山。砖不在多，有一块就灵；山不在高，守一生就行。//程序所用到的各种程序包importjava.awt.BorderLayout;importjava.awt.CheckboxMenuItem;importjava.awt.Color;importjava.awt.Component;importjava.awt.Container;importjava.awt.FileDialog;importjava.awt.Font;importjava.awt.FontMetrics;importjava.awt.Graphics;importjava.awt.Menu;importjava.awt.MenuBar;importjava.awt.MenuItem;importjava.awt.event.ActionEvent;importjava.awt.event.ActionListener;importjava.awt.event.ItemEvent;importjava.awt.event.ItemListener;importjava.awt.event.WindowAdapter;importjava.awt.event.WindowEvent;importjavax.media.ControllerClosedEvent;importjavax.media.ControllerEvent;importjavax.media.ControllerListener;importjavax.media.EndOfMediaEvent;importjavax.media.GainControl;importjavax.media.Manager;importjavax.media.MediaLocator;importjavax.media.NoPlayerException;importjavax.media.Player;importjavax.media.PrefetchCompleteEvent;importjavax.media.RealizeCompleteEvent;importjavax.media.Time;importjavax.swing.JFrame;//本程序对应的类；classMediaPlayerextendsJFrameimplementsActionListener,ControllerListener,ItemListener{//MediaPlayer类的变量成员的声明；//JMF提供的播放器对象；Playerplayer;Componentvc,cc,gcc;GainControlgc;//first值用来控制在刚开始程序时显示一幅欢迎界面；loop用以标记是否循环播放；booleanfirst=true,loop=false;//设立一个字符串记录当前打开文件的路径StringcurrentDirectory;MediaPlayer(Stringtitle){super(title);//利用一个adapter实现对用户点击窗口系统菜单的关闭按钮//时的响应；addWindowListener(newWindowAdapter(){publicvoidwindowClosing(WindowEvente){//调用dispose以执行windowCloseddispose();}publicvoidwindowClosed(WindowEvente){if(player!=null)player.close();System.exit(0);}});//调用设置程序菜单栏的方法成员完成菜单的布置setupMenu();setSize(400,400);setVisible(true);}//本方法用以设置程序菜单栏publicvoidsetupMenu(){//设置一个菜单Menuf=newMenu("文件");//往设置的菜单种添加菜单项MenuItemmi=newMenuItem("打开");mi.addActionListener(this);f.add(mi);f.addSeparator();CheckboxMenuItemcbmi=newCh