Question

求大神解答。。急！！！！考试中谢谢。

Answer 1

Java程序代码：

import java.awt.GridLayout;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JTextField;

public class test extends JFrame {

private static final long serialVersionUID = 1L;

JTextField txtNum1, txtNum2, txtResult;

JLabel lblNum1, lblNum2, lblResult;

public test() {

super("张三01号");

txtNum1 = new JTextField(5);

txtNum2 = new JTextField(5);

txtResult = new JTextField(5);

lblNum1 = new JLabel("第一个数：");

lblNum2 = new JLabel("第二个数：");

lblResult = new JLabel("结果为：");

setLayout(new GridLayout(3, 2));

add(lblNum1);

add(txtNum1);

add(lblNum2);

add(txtNum2);

add(lblResult);

add(txtResult);

setSize(300, 200);

setVisible(true);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

public static void main(String[] args) {

new test();

    }

}

运行效果：