package musicplayer;import java.awt.*;import java.awt.event.*;import javax.swing.*;import javax.swing.border.*;public class AboutBox extends JDialog implements ActionListener {  private JPanel mainPanel = new JPanel();  private JPanel buttonPanel = new JPanel();  private JButton okBttn = new JButton();  private JLabel imageLabel = new JLabel();  private JLabel productLabel = new JLabel();  private JLabel versionLabel = new JLabel();  private JLabel copyrightLabel = new JLabel();  private GridLayout mainLayout = new GridLayout();  private static final String product = "音頻播放器";  private static final String version = "1.0";  private static final String copyright = "Copyright (c) MusicPlayer";  public AboutBox(Frame parent) {      super(parent);      enableEvents(AWTEvent.WINDOW_EVENT_MASK);      try {         GuiInit();       }      catch(Exception e) {          e.printStackTrace();       }      pack();  }    private void GuiInit() throws Exception  {    this.setTitle("關于");    setResizable(false);    mainPanel.setLayout(mainLayout);    buttonPanel.setLayout(new BorderLayout() );    mainPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));    mainLayout.setRows(4);    mainLayout.setColumns(1);    productLabel.setText(product);    versionLabel.setText(version);    copyrightLabel.setText(copyright);    okBttn.setText("確定");    okBttn.addActionListener(this);    buttonPanel.add(okBttn);    mainPanel.add(productLabel, null);    mainPanel.add(versionLabel, null);    mainPanel.add(copyrightLabel, null);    this.getContentPane().add(mainPanel, BorderLayout.NORTH);    this.getContentPane().add(buttonPanel, null);  }  protected void processWindowEvent(WindowEvent e) {     if (e.getID() == WindowEvent.WINDOW_CLOSING) {        dispose();      }    super.processWindowEvent(e);  }  public void actionPerformed(ActionEvent e) {    if (e.getSource() == okBttn) {      dispose();    }  }}