大家帮忙看看程序错哪了？超难！

Question

package jvideosystem;
import java.awt.*;
import java.awt.event.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
import java.awt.event.WindowEvent;
import java.awt.event.WindowAdapter;
import javax.media.*;
public class JVideoPlayerFrame extends JFrame {
JPanel contentPane;
BorderLayout borderLayout1 = new BorderLayout();
JMenuBar jMenuBar1 = new JMenuBar();
JMenu jMenuFile = new JMenu();
JMenuItem jMenuFile_open = new JMenuItem();
JMenu jMenuPlay = new JMenu();
JMenuItem jCheckBoxMenuItem_loop = new JMenuItem();
JLabel jLabel1 = new JLabel();
JPanel jPanelVideo = new JPanel();
BorderLayout borderLayout2 = new BorderLayout();
JMenuItem jMenuFile_exit = new JMenuItem();
JMenu jMenuHelp = new JMenu();
JMenuItem jMenuHelp_about = new JMenuItem();
Player player;
Component visualcom, controlcom;
boolean first = true;
boolean loop = false;
String currentDirectory;
FileDialog fd;
public JVideoPlayerFrame() {
try {
setDefaultCloseOperation(EXIT_ON_CLOSE);
jbInit();
} catch (Exception exception) {
exception.printStackTrace();}}
private void jbInit() throws Exception {
contentPane = (JPanel) getContentPane();
contentPane.setLayout(borderLayout1);
setSize(new Dimension(400, 300));
setTitle("Java音频播放器");
this.addWindowListener(new JVideoPlayerFrame_this_windowAdapter(this));
jMenuFile.setText("文件");
jMenuFile_open.setText("打开");
jMenuFile_open.addActionListener(new
JVideoPlayerFrame_jMenuFileExit_ActionAdapter(this));
jMenuPlay.setText("播放");
jCheckBoxMenuItem_loop.setText("循环播放");
jCheckBoxMenuItem_loop.addActionListener(new
JVideoPlayerFrame_jMenuHelpAbout_ActionAdapter(this));
jLabel1.setOpaque(true);
jLabel1.setToolTipText("状态栏");
jLabel1.setText("欢迎使用JAVA音频播放器@计算机013班02号张南");
jPanelVideo.setLayout(borderLayout2);
jPanelVideo.setToolTipText("播放窗口");
jMenuFile_exit.setText("退出");
jMenuHelp.setText("帮助");
jMenuHelp_about.setText("关于");
jMenuFile_exit.addActionListener(new
JVideoPlayerFrame_jMenuFile_exit_actionAdapter(this));
jCheckBoxMenuItem_loop.addActionListener(new
JVideoPlayerFrame_jCheckBoxMenuItem_loop_actionAdapter(this));
jMenuHelp_about.addActionListener(new
JVideoPlayerFrame_jMenuHelp_about_actionAdapter(this));
jMenuBar1.add(jMenuFile);
jMenuFile.add(jMenuFile_open);
jMenuFile.add(jMenuFile_exit);
jMenuBar1.add(jMenuPlay);
jMenuBar1.add(jMenuHelp);
jMenuPlay.add(jCheckBoxMenuItem_loop);
contentPane.add(jLabel1, java.awt.BorderLayout.SOUTH);
contentPane.add(jPanelVideo, java.awt.BorderLayout.CENTER);
jMenuHelp.add(jMenuHelp_about);
setJMenuBar(jMenuBar1);}
void jMenuHelpAbout_actionPerformed(ActionEvent actionEvent) {
JVideoPlayerFrame_AboutBox dlg = new JVideoPlayerFrame_AboutBox(this);
Dimension dlgSize = dlg.getPreferredSize();
Dimension frmSize = getSize();
Point loc = getLocation();
dlg.setLocation((frmSize.width - dlgSize.width) / 2 + loc.x,
(frmSize.height - dlgSize.height) / 2 + loc.y);
dlg.setModal(true);
dlg.pack();
dlg.show();}
void this_windowClosed(WindowEvent e) {
System.exit(0);}
void this_windowClosing(WindowEvent e) {
dispose();}
public void jMenuFile_open_actionPerformed(ActionEvent e) {
FileDialog fd = new FileDialog(this, "打开媒体文件", FileDialog.LOAD);
fd.setDirectory(currentDirectory);
fd.show();
if (fd.getFile() == null)
return;
currentDirectory = fd.getDirectory();
if (player != null)
player.close();
try {
player = Manager.createPlayer(new MediaLocator
("file:" + fd.getDirectory() +
fd.getFile()));}
catch (java.io.IOException e2) {
System.out.println(e2);
return;
} catch (NoPlayerException e2) {
System.out.println("不能找到播放器。");
return;}
if (player == null) {
System.out.println("无法创建该播放器。");
return;
first = false;
this.setTitle("播放文件位置" + fd.getDirectory() + fd.getFile());
player.prefetch();}}
public void controllerUpdate(ControllerEvent e) {
if (e instanceof ControllerClosedEvent) {
if (visualcom != null) {
jPanelVideo.remove(visualcom);
visualcom = null;}
if (controlcom != null) {
jPanelVideo.remove(controlcom);
controlcom = null;}
return;}
if (e instanceof EndOfMediaEvent) {
if (loop) {
player.setMediaTime(new Time(0));
player.start();}
return;}
if (e instanceof PrefetchCompleteEvent) {
player.start();
return;}
if (e instanceof RealizeCompleteEvent) {
visualcom = player.getVisualComponent();
if (visualcom != null)
jPanelVideo.add(visualcom, BorderLayout.CENTER);
controlcom = player.getControlPanelComponent();
if (controlcom != null)
jPanelVideo.add(controlcom, BorderLayout.SOUTH);
this.pack();}}
void jMenuFile_exit_actionPerformed(ActionEvent e) {
dispose();
return;}
void jCheckBoxMenuItem_loop_actionPerformed(ActionEvent e) {
loop = !loop;}
public void jMenuHelp_about_actionPerformed(ActionEvent e) {
JVideoPlayerFrame_AboutBox dlg = new JVideoPlayerFrame_AboutBox(this);
Dimension dlgSize = dlg.getPreferredSize();
Dimension frmSize = getSize();
Point loc = getLocation();
dlg.setLocation((frmSize.width - dlgSize.width) / 2 + loc.x,
(frmSize.height - dlgSize.height) / 2 + loc.y);
dlg.setModal(true);
dlg.pack();
dlg.show();}
class JVideoPlayerFrame_jMenuHelp_about_actionAdapter implements
ActionListener {
private JVideoPlayerFrame adaptee;
JVideoPlayerFrame_jMenuHelp_about_actionAdapter(JVideoPlayerFrame
adaptee) {
this.adaptee = adaptee;}
public void actionPerformed(ActionEvent e) {
adaptee.jMenuHelp_about_actionPerformed(e);}}
class JVideoPlayerFrame_jCheckBoxMenuItem_loop_actionAdapter implements
ActionListener {
private JVideoPlayerFrame adaptee;
JVideoPlayerFrame_jCheckBoxMenuItem_loop_actionAdapter(
JVideoPlayerFrame
adaptee) {
this.adaptee = adaptee;}
public void actionPerformed(ActionEvent e) {
adaptee.jCheckBoxMenuItem_loop_actionPerformed(e);}}
class JVideoPlayerFrame_jMenuFile_exit_actionAdapter implements
ActionListener {
private JVideoPlayerFrame adaptee;
JVideoPlayerFrame_jMenuFile_exit_actionAdapter(JVideoPlayerFrame
adaptee) {
this.adaptee = adaptee;}
public void actionPerformed(ActionEvent e) {
adaptee.jMenuFile_exit_actionPerformed(e);}}
class JVideoPlayerFrame_this_windowAdapter extends WindowAdapter {
private JVideoPlayerFrame adaptee;
JVideoPlayerFrame_this_windowAdapter(JVideoPlayerFrame adaptee) {
this.adaptee = adaptee;}
public void windowClosed(WindowEvent e) {
adaptee.this_windowClosed(e);}
public void windowClosing(WindowEvent e) {
adaptee.this_windowClosing(e);}}
class JVideoPlayerFrame_jMenuFileExit_ActionAdapter implements
ActionListener {
JVideoPlayerFrame adaptee;JVideoPlayerFrame_jMenuFileExit_ActionAdapter(JVideoPlayerFrame adaptee) {
this.adaptee = adaptee;}
public void actionPerformed(ActionEvent actionEvent) {
adaptee.jMenuFile_open_actionPerformed(actionEvent);}}
class JVideoPlayerFrame_jMenuHelpAbout_ActionAdapter implements
ActionListener {
JVideoPlayerFrame adaptee;
JVideoPlayerFrame_jMenuHelpAbout_ActionAdapter(JVideoPlayerFrame
adaptee) {
this.adaptee = adaptee;}
public void actionPerformed(ActionEvent actionEvent) {
adaptee.jMenuHelpAbout_actionPerformed(actionEvent);}}}

Answer 1

package jvideosystem;
import java.awt.*;
import java.awt.event.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
import java.awt.event.WindowEvent;
import java.awt.event.WindowAdapter;
import javax.media.*;public class JVideoPlayerFrame extends JFrame
{
    JPanel contentPane;    BorderLayout borderLayout1 = new BorderLayout();    JMenuBar jMenuBar1 = new JMenuBar();    JMenu jMenuFile = new JMenu();    JMenuItem jMenuFile_open = new JMenuItem();    JMenu jMenuPlay = new JMenu();    JMenuItem jCheckBoxMenuItem_loop = new JMenuItem();    JLabel jLabel1 = new JLabel();    JPanel jPanelVideo = new JPanel();    BorderLayout borderLayout2 = new BorderLayout();    JMenuItem jMenuFile_exit = new JMenuItem();    JMenu jMenuHelp = new JMenu();    JMenuItem jMenuHelp_about = new JMenuItem();    Player player;    Component visualcom, controlcom;    boolean first = true;    boolean loop = false;    String currentDirectory;    FileDialog fd;    public JVideoPlayerFrame()
    {
        try
        {
            setDefaultCloseOperation(EXIT_ON_CLOSE);
            jbInit();
        } catch (Exception exception)
        {
            exception.printStackTrace();
        }
    }    private void jbInit() throws Exception
    {
        contentPane = (JPanel) getContentPane();
        contentPane.setLayout(borderLayout1);
        setSize(new Dimension(400, 300));
        setTitle("Java音频播放器");
        this.addWindowListener(new JVideoPlayerFrame_this_windowAdapter(this));
        jMenuFile.setText("文件");
        jMenuFile_open.setText("打开");
        jMenuFile_open
                .addActionListener(new JVideoPlayerFrame_jMenuFileExit_ActionAdapter(
                        this));
        jMenuPlay.setText("播放");
        jCheckBoxMenuItem_loop.setText("循环播放");
        jCheckBoxMenuItem_loop
                .addActionListener(new JVideoPlayerFrame_jMenuHelpAbout_ActionAdapter(
                        this));
        jLabel1.setOpaque(true);
        jLabel1.setToolTipText("状态栏");
        jLabel1.setText("欢迎使用JAVA音频播放器@计算机013班02号张南");
        jPanelVideo.setLayout(borderLayout2);
        jPanelVideo.setToolTipText("播放窗口");
        jMenuFile_exit.setText("退出");
        jMenuHelp.setText("帮助");
        jMenuHelp_about.setText("关于");
        jMenuFile_exit
                .addActionListener(new JVideoPlayerFrame_jMenuFile_exit_actionAdapter(
                        this));
        jCheckBoxMenuItem_loop
                .addActionListener(new JVideoPlayerFrame_jCheckBoxMenuItem_loop_actionAdapter(
                        this));
        jMenuHelp_about
                .addActionListener(new JVideoPlayerFrame_jMenuHelp_about_actionAdapter(
                        this));
        jMenuBar1.add(jMenuFile);
        jMenuFile.add(jMenuFile_open);
        jMenuFile.add(jMenuFile_exit);
        jMenuBar1.add(jMenuPlay);
        jMenuBar1.add(jMenuHelp);
        jMenuPlay.add(jCheckBoxMenuItem_loop);
        contentPane.add(jLabel1, java.awt.BorderLayout.SOUTH);
        contentPane.add(jPanelVideo, java.awt.BorderLayout.CENTER);
        jMenuHelp.add(jMenuHelp_about);
        setJMenuBar(jMenuBar1);
    }    void jMenuHelpAbout_actionPerformed(ActionEvent actionEvent)
    {
//        JVideoPlayerFrame_AboutBox dlg = new JVideoPlayerFrame_AboutBox(this);
//        Dimension dlgSize = dlg.getPreferredSize();
//        Dimension frmSize = getSize();
//        Point loc = getLocation();
//        dlg.setLocation((frmSize.width - dlgSize.width) / 2 + loc.x,
//                (frmSize.height - dlgSize.height) / 2 + loc.y);
//        dlg.setModal(true);
//        dlg.pack();
//        dlg.show();
    }    void this_windowClosed(WindowEvent e)
    {
        System.exit(0);
    }    void this_windowClosing(WindowEvent e)
    {
        dispose();
    }    public void jMenuFile_open_actionPerformed(ActionEvent e)
    {
        FileDialog fd = new FileDialog(this, "打开媒体文件", FileDialog.LOAD);
        fd.setDirectory(currentDirectory);
        fd.show();
        if (fd.getFile() == null)
            return;
        currentDirectory = fd.getDirectory();
        if (player != null)
            player.close();
        try
        {
            player = Manager.createPlayer(new MediaLocator("file:"
                    + fd.getDirectory() + fd.getFile()));
        } catch (java.io.IOException e2)
        {
            System.out.println(e2);
            return;
        } catch (NoPlayerException e2)
        {
            System.out.println("不能找到播放器。");
            return;
        }
        if (player == null)
        {
            System.out.println("无法创建该播放器。");
            return;
//            first = false;
//            this.setTitle("播放文件位置" + fd.getDirectory() + fd.getFile());
//            player.prefetch();
        }
    }

Answer 2

public void controllerUpdate(ControllerEvent e)
    {
        if (e instanceof ControllerClosedEvent)
        {
            if (visualcom != null)
            {
                jPanelVideo.remove(visualcom);
                visualcom = null;
            }
            if (controlcom != null)
            {
                jPanelVideo.remove(controlcom);
                controlcom = null;
            }
            return;
        }
        if (e instanceof EndOfMediaEvent)
        {
            if (loop)
            {
                player.setMediaTime(new Time(0));
                player.start();
            }
            return;
        }
        if (e instanceof PrefetchCompleteEvent)
        {
            player.start();
            return;
        }
        if (e instanceof RealizeCompleteEvent)
        {
            visualcom = player.getVisualComponent();
            if (visualcom != null)
                jPanelVideo.add(visualcom, BorderLayout.CENTER);
            controlcom = player.getControlPanelComponent();
            if (controlcom != null)
                jPanelVideo.add(controlcom, BorderLayout.SOUTH);
            this.pack();
        }
    }    void jMenuFile_exit_actionPerformed(ActionEvent e)
    {
        dispose();
        return;
    }    void jCheckBoxMenuItem_loop_actionPerformed(ActionEvent e)
    {
        loop = !loop;
    }    public void jMenuHelp_about_actionPerformed(ActionEvent e)
    {
//        JVideoPlayerFrame_AboutBox dlg = new JVideoPlayerFrame_AboutBox(this);
//        Dimension dlgSize = dlg.getPreferredSize();
//        Dimension frmSize = getSize();
//        Point loc = getLocation();
//        dlg.setLocation((frmSize.width - dlgSize.width) / 2 + loc.x,
//                (frmSize.height - dlgSize.height) / 2 + loc.y);
//        dlg.setModal(true);
//        dlg.pack();
//        dlg.show();
    }    class JVideoPlayerFrame_jMenuHelp_about_actionAdapter implements
            ActionListener
    {
        private JVideoPlayerFrame adaptee;        JVideoPlayerFrame_jMenuHelp_about_actionAdapter(
                JVideoPlayerFrame adaptee)
        {
            this.adaptee = adaptee;
        }        public void actionPerformed(ActionEvent e)
        {
            adaptee.jMenuHelp_about_actionPerformed(e);
        }
    }    class JVideoPlayerFrame_jCheckBoxMenuItem_loop_actionAdapter implements
            ActionListener
    {
        private JVideoPlayerFrame adaptee;        JVideoPlayerFrame_jCheckBoxMenuItem_loop_actionAdapter(
                JVideoPlayerFrame adaptee)
        {
            this.adaptee = adaptee;
        }        public void actionPerformed(ActionEvent e)
        {
            adaptee.jCheckBoxMenuItem_loop_actionPerformed(e);
        }
    }    class JVideoPlayerFrame_jMenuFile_exit_actionAdapter implements
            ActionListener
    {
        private JVideoPlayerFrame adaptee;        JVideoPlayerFrame_jMenuFile_exit_actionAdapter(JVideoPlayerFrame adaptee)
        {
            this.adaptee = adaptee;
        }        public void actionPerformed(ActionEvent e)
        {
            adaptee.jMenuFile_exit_actionPerformed(e);
        }
    }    class JVideoPlayerFrame_this_windowAdapter extends WindowAdapter
    {
        private JVideoPlayerFrame adaptee;        JVideoPlayerFrame_this_windowAdapter(JVideoPlayerFrame adaptee)
        {
            this.adaptee = adaptee;
        }        public void windowClosed(WindowEvent e)
        {
            adaptee.this_windowClosed(e);
        }        public void windowClosing(WindowEvent e)
        {
            adaptee.this_windowClosing(e);
        }
    }    class JVideoPlayerFrame_jMenuFileExit_ActionAdapter implements
            ActionListener
    {
        JVideoPlayerFrame adaptee;        JVideoPlayerFrame_jMenuFileExit_ActionAdapter(JVideoPlayerFrame adaptee)
        {
            this.adaptee = adaptee;
        }        public void actionPerformed(ActionEvent actionEvent)
        {
            adaptee.jMenuFile_open_actionPerformed(actionEvent);
        }
    }    class JVideoPlayerFrame_jMenuHelpAbout_ActionAdapter implements
            ActionListener
    {
        JVideoPlayerFrame adaptee;        JVideoPlayerFrame_jMenuHelpAbout_ActionAdapter(JVideoPlayerFrame adaptee)
        {
            this.adaptee = adaptee;
        }        public void actionPerformed(ActionEvent actionEvent)
        {
            adaptee.jMenuHelpAbout_actionPerformed(actionEvent);
        }
    }
}

Answer 3

jCheckBoxMenuItem_loop.setText("循环播放");
        jCheckBoxMenuItem_loop
                .addActionListener(new JVideoPlayerFrame_jMenuHelpAbout_ActionAdapter(
                        this)); // 命令 ActionListener .加错了。 你给 Loop MenuItem 添加了  MenuHelpAbout 动作。