shiyan7_2.java

根据上课老师的要求

import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class Shiyan7_2 extends Applet implements ActionListener,TextListener
{Label lab1;
 TextArea ta;
 TextField text;
 public void init()
 {resize(400,400);
 lab1=new Label("输入文本：");
  add(lab1);
 text=new TextField(10);
  text.addActionListener(this);
  text.addTextListener(this);
  add(text);
  ta=new TextArea(20,40);
  ta.addTextListener(this);
  add(ta);}
  public void actionPerformed(ActionEvent e)
  {ta.append(text.getText());
  text.setText("");
  repaint();}
  public void textValueChanged(TextEvent e)
  {repaint();}}