JDialog弹窗

JDialog弹窗

package com.chen.lesson4;

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

public class DialogDemo extends JFrame{
    public DialogDemo() {
        this.setVisible(true);
        this.setBounds(100,100,500,500);
        this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

        //JFrame 容器
        Container container = this.getContentPane();
        //绝对布局
        container.setLayout(null);

        //按钮
        JButton jButton = new JButton("点击弹出一个对话框");
        jButton.setBounds(30,30,200,50);

        container.add(jButton);
        //点击这个按钮 弹出一个弹窗
        jButton.addActionListener(new ActionListener(){
            @Override
            public void actionPerformed(ActionEvent e) {
                new MyDialogDemo();
            }
        });

        container.add(jButton);

    }

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

class MyDialogDemo extends JDialog{
    public MyDialogDemo(){
        this.setVisible(true);
        this.setBounds(100 ,100, 200,200);

        Container container = this.getContentPane();
        container.setLayout(null);
        container.add(new Label("弹出的窗口"));
    }
}