µÚÒ»¸öJava½çÃæ³ÌÐò

     ×öÁËÒ»¸öºÜ¼òµ¥µÄ½çÃæ³ÌÐò,Ò²ÊÇÎÒµÚÒ»¸ö½çÃæ³ÌÐò.Ö÷Òª¹¦ÄܾÍÊÇÊäÈëÁ½¸öÊý×Ö,¼ÆËãÕâÁ½¸öÊý×ֵĺÍ,ºÜ¼òµ¥µÄ¹¦ÄÜ,ÎÒÈ´»¨Á˺ܾÃ,¶ÔjavaÌ«²»ÊìϤÁË,Á¬µÃµ½textField1ÖÐÓû§ÊäÈëµÄÖµÔõô»ñµÃ,¶¼²»ÖªµÀ,ºóÀ´baidu²ÅÖªµÀ,
     Óà textField1.getText()»ñµÃÊäÈëµÄÖµ;,
     É趨ij¸öÖµÔòÊÇ textField3.setText();
     ½«Stringת»¯³ÉÕûÐÎÓà Integer.parseInt(string1);
     Ïà·´ÔòÊÇ String.valueOf(c) 
     Ö÷Òª´úÂëÌùÏÂ,¸ø×Ô¼ºÁô¸ö¼ÍÄî.import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
public class Com extends JFrame implements ActionListener {
/**
* @param args
*/
JButton button = new JButton("=");
JTextField textField1 = new JTextField(5);
JTextField textField2 = new JTextField(5);
JTextField textField3 = new JTextField(5);
JLabel label1 = new JLabel("ÇëÊäÈë: ");
JLabel label2 = new JLabel("+");

public static void main(String[] args) {
// TODO Auto-generated method stub
Com com = new Com();
com.init();
com.setVisible(true);
}
public void init() {
this.setSize(400, 300);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setResizable(false);
this.setTitle("¼òµ¥¼ÆËã³ÌÐò");
this.setLocation(400, 250);
JPanel jPanel = new JPanel();
jPanel.setBackground(Color.white);
jPanel.setPreferredSize(new Dimension(300, 300));
this.getContentPane().add(jPanel, BorderLayout.CENTER);
jPanel.add(label1);
jPanel.add(textField1);
jPanel.add(label2);
jPanel.add(textField2);
jPanel.add(button);
button.addActionListener(this);
jPanel.add(textField3);
}
public void actionPerformed(ActionEvent e) {
Object object = e.getSource();
if (object == button) {
String string1 = textField1.getText();
String string2 = textField2.getText();
if (string1.trim().length() == 0 || string2.trim().length() == 0) {