编写一个java Applet程序
来源:百度知道 编辑:UC知道 时间:2024/05/11 23:52:19
import java.applet.Applet;
import java.awt.Button;
import java.awt.Graphics;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
public class Numberpow extends Applet implements KeyListener
{
private TextField tf1,tf2;
private Button b;
public void init() {
// TODO Auto-generated method stub
tf1=new TextField(8);
tf2=new TextField(8);
tf2.setEditable(false);
this.addKeyListener(this);
tf1.addKeyListener( this);
this.add( tf1);
this.add( tf2);
}
public void paint(Graphics g) {
// TODO Auto-generated method stub
g.drawString("按下空格键清空",20,100);
}
public void keyTyped(KeyEvent e) {
// TODO Auto-generated method stub
char ch=e.getKeyChar();
if(ch==' ')
{