如何利用Java实现在两个文本框中输入数据,计算两数和在第三个文本框中...

发布网友发布时间：2022-05-14 07:47

共1个回答

热心网友时间：2022-04-23 15:58

import java.awt.FlowLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JTextField;

public class Main {

private static JTextField a = new JTextField(4);

private static JTextField b = new JTextField(4);

private static JTextField c = new JTextField(4);

public static void main(String[] args) {

JFrame frame = new JFrame("加法计算");

frame.setLayout(new FlowLayout(FlowLayout.LEFT));

frame.add(a);

frame.add(new JLabel("+"));

frame.add(b);

JButton button = new JButton("=");

button.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

c.setText(String.valueOf(Double.parseDouble(a.getText()) + Double.parseDouble(b.getText())));

}

});

frame.add(button);

frame.add(c);

frame.pack();

frame.setVisible(true);

}

追问能稍微简单一点，还有附Java程序MyEclipse截图吗？

追答