文本框的简单处理程序

 import java.applet.*;import java.awt.*;import java.awt.event.*;public class haha extends Applet implements ActionListener{Label lb;TextField in,out;public void init(){lb=new Label("请输入您的名字");in=new TextField(6);out=new TextField(20);add(lb);add(in);add(out);in.addActionListener(this);}public void actionPerformed(ActionEvent e){out.setText(in.getText()+"欢迎光临！");}}