package statusbar;import java.awt.*;import java.awt.event.*;import javax.swing.*;public class Frame1 extends JFrame {  JPanel contentPane;  BorderLayout borderLayout1 = new BorderLayout();  Label label1 = new Label();  Button button1 = new Button();  Button button2 = new Button();  Button button3 = new Button();  Button button4 = new Button();  /**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.setResizable(false);    this.setSize(new Dimension(266, 186));    this.setTitle("狀態欄演示程序");    button1.setLabel("button1");    button1.addActionListener(new java.awt.event.ActionListener() {      public void actionPerformed(ActionEvent e) {        button1_actionPerformed(e);      }    });    button2.setLabel("button2");    button2.addActionListener(new java.awt.event.ActionListener() {      public void actionPerformed(ActionEvent e) {        button2_actionPerformed(e);      }    });    button3.setLabel("button3");    button3.addActionListener(new java.awt.event.ActionListener() {      public void actionPerformed(ActionEvent e) {        button3_actionPerformed(e);      }    });    button4.setLabel("button4");    button4.addActionListener(new java.awt.event.ActionListener() {      public void actionPerformed(ActionEvent e) {        button4_actionPerformed(e);      }    });    contentPane.add(label1, BorderLayout.SOUTH);    contentPane.add(button1, BorderLayout.WEST);    contentPane.add(button2, BorderLayout.CENTER);    contentPane.add(button3, BorderLayout.EAST);    contentPane.add(button4, 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 button1_actionPerformed(ActionEvent e) {label1.setText("You hava clicked button1");  }  void button2_actionPerformed(ActionEvent e) {label1.setText("You hava clicked button2");  }  void button3_actionPerformed(ActionEvent e) {label1.setText("You hava clicked button3");  }  void button4_actionPerformed(ActionEvent e) {label1.setText("You hava clicked button4");  }}