javaGUI 第八课 弹窗

package com.javaGUI.day2;

import com.javaGUI.Test;

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

public class TestDailog extends Jframe {
    public TestDailog(){
        setBounds(100,100,700,500);
        setVisible(true);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        //设置一个容器Jframe，放东西
        Container container = this.getContentPane();
        //绝对布局
        container.setLayout(null);
        //设置一个按钮
        JButton jButton = new JButton("点击按钮弹出一个对话框");
        jButton.setBounds(30,30,200,100);
        //监听事件：点击按钮弹出一个弹窗
        jButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                new MyDailog();
            }
        });
        container.add(jButton);
    }

    public static void main(String[] args) {
        new TestDailog();
    }
}
class MyDailog extends JDialog{
    public MyDailog(){
        setVisible(true);
        setBounds(300,300,300,200);
        Container container = this.getContentPane();
        container.setLayout(null);
        JLabel jLabel = new JLabel("Hello World");
        jLabel.setBounds(30,30,100,100);
        container.add(jLabel);
        container.setBackground(Color.CYAN);

    }
}