第七章代码

import java.applet.*;  import java.awt.*;  import java.awt.event.*;  public class simpleEvent extends Applet implements ActionListener  {   /**   * @param args   */   Label lb;   TextField in,out;      //public static void main(String[] args) {    // TODO Auto-generated method stub         public void init()         {          lb = new Label("请输入你的名字");          in = new TextField(6);          out = new TextField(20);          add(lb);          add(in);          add(out);          in.addActionListener(this);         }                                       @Override   public void actionPerformed(ActionEvent e)    {    // TODO Auto-generated method stub    out.setText(in.getText()+"欢迎光临？？");   }     }