package mouseclick;import java.awt.*;import java.awt.event.*;import javax.swing.*;import com.borland.jbcl.layout.*;/** * <p>Title: mouse click demo</p> * <p>Description: This is a mouse click demo</p> * <p>Copyright: Copyright (c) 2002</p> * <p>Company: </p> * @author liujun * @version 1.0 */public class mouseclickFrame extends JFrame {  JPanel contentPane;  Label label1 = new Label();  XYLayout xYLayout1 = new XYLayout();  Label label2 = new Label();  Label label3 = new Label();  List list1 = new List();  Label label4 = new Label();   boolean a[]={false,false,false};  //Construct the frame  public mouseclickFrame() {    enableEvents(AWTEvent.WINDOW_EVENT_MASK);    try {      jbInit();    }    catch(Exception e) {      e.printStackTrace();    }  }  //Component initialization  private void jbInit() throws Exception  {    //setIconImage(Toolkit.getDefaultToolkit().createImage(mouseclickFrame.class.getResource("[Your Icon]")));    contentPane = (JPanel) this.getContentPane();    contentPane.setLayout(xYLayout1);    this.setSize(new Dimension(255, 254));    this.setTitle("mouse click Frame Demo");    label2.setBackground(Color.gray);    label2.setText("希望");    label2.addMouseMotionListener(new java.awt.event.MouseMotionAdapter() {      public void mouseDragged(MouseEvent e) {        label2_mouseDragged(e);      }    });    label3.setBackground(Color.gray);    label3.setText("教育");    label3.addMouseMotionListener(new java.awt.event.MouseMotionAdapter() {      public void mouseDragged(MouseEvent e) {        label3_mouseDragged(e);      }    });    label4.setText("體育");    label4.addMouseListener(new java.awt.event.MouseAdapter() {      public void mouseClicked(MouseEvent e) {        label4_mouseClicked(e);      }    });    label4.addMouseMotionListener(new java.awt.event.MouseMotionAdapter() {      public void mouseDragged(MouseEvent e) {        label4_mouseDragged(e);      }    });    label4.setBackground(Color.gray);    contentPane.addMouseMotionListener(new java.awt.event.MouseMotionAdapter() {      public void mouseMoved(MouseEvent e) {        contentPane_mouseMoved(e);      }    });    contentPane.addMouseListener(new java.awt.event.MouseAdapter() {      public void mousePressed(MouseEvent e) {        contentPane_mousePressed(e);      }    });    list1.addMouseListener(new java.awt.event.MouseAdapter() {      public void mouseEntered(MouseEvent e) {        list1_mouseEntered(e);      }    });    contentPane.add(list1,   new XYConstraints(146, 6, 104, 199));    contentPane.add(label1,     new XYConstraints(4, 208, 248, 32));    contentPane.add(label3, new XYConstraints(13, 72, 98, 30));    contentPane.add(label4, new XYConstraints(13, 117, 98, 30));    contentPane.add(label2, new XYConstraints(13, 19, 99, 34));  }  //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 contentPane_mouseMoved(MouseEvent e) {      label1.setText("鼠標位置：x="+e.getX()+"  y="+e.getY());  }  void contentPane_mousePressed(MouseEvent e) { if(e.getModifiers()==e.BUTTON1_MASK){   label1.setText("鼠標左鍵被單擊,它的位置：x="+e.getX()+"  y="+e.getY());      }; if(e.getModifiers()==e.BUTTON3_MASK){   label1.setText("鼠標右鍵被單擊,它的位置：x="+e.getX()+"  y="+e.getY());     };  }  void label2_mouseDragged(MouseEvent e) {            label1.setText("鼠標正在拖動\"希望\"");            a[0]=true;  }  void label3_mouseDragged(MouseEvent e) {            label1.setText("鼠標正在拖動\"教育\"");            a[1]=true;  }  void label4_mouseDragged(MouseEvent e) {            label1.setText("鼠標正在拖動\"體育\"");            a[2]=true;  }  void list1_mouseEntered(MouseEvent e) {          label1.setText("鼠標正在進入\"列表\"");          if(a[0]) {  list1.addItem(label2.getText());                   a[0]=false;                 }          if(a[1]){ list1.addItem(label3.getText());                a[1]=false;                }          if(a[2]){ list1.addItem(label4.getText());                a[2]=false;                }  }  void label4_mouseClicked(MouseEvent e) {    if(e.getClickCount()==2)      list1.addItem(label4.getText());  }}