jbuilder 100例　java源码学习,非常不错,有需要朋友下来

				package keyevent;								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();								  /**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();				    label1.setAlignment(1);				    label1.setFont(new java.awt.Font("Dialog", 1, 80));				    contentPane.setLayout(borderLayout1);				    this.setSize(new Dimension(243, 177));				    this.setTitle("KeyEvent演示程序");				    this.addKeyListener(new java.awt.event.KeyAdapter() {				      public void keyPressed(KeyEvent e) {				        this_keyPressed(e);				      }				    });				    contentPane.add(label1, BorderLayout.CENTER);				  }				  /**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) {				  String s = "";				   label1.setText(s+=e.getKeyChar());				  }								}