java ----Applet两位整数运算（书上的案例 觉的挺好 发上来和大家分享一下）

java Applet的"+" "-" "*" "/" "%"的运算

import java.applet.Applet;import java.awt.Button;import java.awt.Graphics;import java.awt.Label;import java.awt.TextField;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;public class AppletInOut extends Applet implements ActionListener {Label prompt;TextField input1,input2;Button btn;int a=0 , b=1;public void init() {prompt = new Label("输入两个整型数据：");input1 = new TextField(5);input2 = new TextField(5);btn = new Button("运算");add(prompt);add(input1);add(input2);add(btn);btn.addActionListener(this);}public void paint(Graphics g){g.drawString(a+"+"+b+"="+(a+b), 10, 50);g.drawString(a+"-"+b+"="+(a-b), 10, 70);g.drawString(a+"*"+b+"="+(a*b), 10, 90);g.drawString(a+"/"+b+"="+(a/b), 10, 110);g.drawString(a+"%"+b+"="+(a%b), 10, 130);}@Overridepublic void actionPerformed(ActionEvent e) {// TODO Auto-generated method stuba=Integer.parseInt(input1.getText());b=Integer.parseInt(input2.getText());repaint();}}

程序运行结果：