package ex08_07;import java.awt.*;import java.awt.event.*;import javax.swing.*;public class Frame1 extends JFrame {  JPanel contentPane;  BorderLayout borderLayout1 = new BorderLayout();  JLabel jLabel1 = new JLabel();  /**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();    jLabel1.setFont(new java.awt.Font("Dialog", 0, 18));    jLabel1.setText("我");    contentPane.setLayout(borderLayout1);    this.setSize(new Dimension(400, 300));    this.setTitle("Frame Title");    this.addKeyListener(new java.awt.event.KeyAdapter() {      public void keyPressed(KeyEvent e) {        this_keyPressed(e);      }      public void keyReleased(KeyEvent e) {        this_keyReleased(e);      }      public void keyTyped(KeyEvent e) {        this_keyTyped(e);      }    });    contentPane.add(jLabel1, BorderLayout.NORTH);  }  /**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_keyPressed(KeyEvent e) {jLabel1.setText(jLabel1.getText()+"不");  }  void this_keyReleased(KeyEvent e) {jLabel1.setText(jLabel1.getText()+"請");  }  void this_keyTyped(KeyEvent e) {jLabel1.setText(jLabel1.getText()+"你");  }}