package mouseevent;import java.awt.*;import java.awt.event.*;import javax.swing.*;public class Frame1 extends JFrame {  JPanel contentPane;  BorderLayout borderLayout1 = new BorderLayout();  Panel panel1 = new Panel();  Label label1 = new Label();  /**Construct the frame*/  public Frame1() {    enableEvents(AWTEvent.WINDOW_EVENT_MASK);    try {      jbInit();    }    catch(Exception e) {      e.printStackTrace();    }  }  /**Component initialization*/  private void jbInit() throws Exception  {    //setIconImage(Toolkit.getDefaultToolkit().createImage(Frame1.class.getResource("[Your Icon]")));    contentPane = (JPanel) this.getContentPane();    contentPane.setLayout(borderLayout1);    this.setSize(new Dimension(227, 215));    this.setTitle("MouseEvent演示程序");    this.addMouseListener(new java.awt.event.MouseAdapter() {      public void mousePressed(MouseEvent e) {        this_mousePressed(e);      }    });    label1.setText("Click occured:");    panel1.addMouseListener(new java.awt.event.MouseAdapter() {      public void mousePressed(MouseEvent e) {        panel1_mousePressed(e);      }    });    contentPane.add(panel1, BorderLayout.CENTER);    contentPane.add(label1,  BorderLayout.SOUTH);  }  /**Overridden so we can exit when window is closed*/  protected void processWindowEvent(WindowEvent e) {    super.processWindowEvent(e);    if (e.getID() == WindowEvent.WINDOW_CLOSING) {      System.exit(0);    }  }  void this_mousePressed(MouseEvent e) {  }  void panel1_mousePressed(MouseEvent e) {    label1.setText("鼠標事件發生在坐標:("+e.getX()+","+e.getY()+")");    if(e.getModifiers() == e.BUTTON1_MASK)      label1.setText(label1.getText()+"----左鍵");    else if(e.getModifiers() == e.BUTTON3_MASK)      label1.setText(label1.getText()+"----右鍵");  }}