cheater13

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;

public class Add extends JFrame {

    Add(){
        JTextField text1;
        JTextField text2;
        JTextField text3;
        JLabel jLabel;
        JButton button;

        setTitle("加法");
        setBounds(100,100,400,400);
        setLayout(new FlowLayout());
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

        text1 = new JTextField(5);
        text2 = new JTextField(5);
        text3 = new JTextField(5);
        jLabel = new JLabel("+");
        button = new JButton("=");

        add(text1);
        add(jLabel);
        add(text2);
        add(button);
        add(text3);

        button.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                int result;
                result = Integer.parseInt(text1.getText())+Integer.parseInt(text2.getText());
                text3.setText(result+"");
            }
        });
        setVisible(true);
    }

    public static void main(String[] args) {
        new Add();
    }

}