package test.ww.swing;

import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;

import javax.swing.JButton;
import javax.swing.JFrame;

public class MyTest {
    public static void main(String[] args) {
        JFrame A = new JFrame("A");
        JButton openB = new JButton("打开B");
        A.add(openB);
        A.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        A.setSize(400, 300);
        A.setVisible(true);
        openB.addActionListener(new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent e) {
                final JFrame B = new JFrame("B");
                B.setSize(400, 300);
                B.setBackground(Color.BLACK);
                B.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
                B.setVisible(true);
                B.addWindowListener(new WindowListener() {

                    @Override
                    public void windowOpened(WindowEvent e) {
                        // TODO Auto-generated method stub

                    }

                    @Override
                    public void windowIconified(WindowEvent e) {
                        // TODO Auto-generated method stub

                    }

                    @Override
                    public void windowDeiconified(WindowEvent e) {
                        // TODO Auto-generated method stub

                    }

                    @Override
                    public void windowDeactivated(WindowEvent e) {
                        // TODO Auto-generated method stub

                    }

                    @Override
                    public void windowClosing(WindowEvent e) {
                        B.dispose();
                    }

                    @Override
                    public void windowClosed(WindowEvent e) {
                        // TODO Auto-generated method stub

                    }

                    @Override
                    public void windowActivated(WindowEvent e) {
                        // TODO Auto-generated method stub

                    }
                });
            }
        });

    }
}

------解决方案--------------------
可以有以下两种解决方法：
①.如果你是用awt写图形用户界面，就可以让B界面声明继承windowActionListener接口，并实现里面的抽象方法。
②.如果你是用javax.swing编写图形用户界面，就可以直接用this.setDefaultCloseOperation(JFrame.EXIT_ON_CLoSE);该方法就可以实图形界面B的关闭！

------解决方案--------------------
为什么要用awt这种过时的东西呢，有swing为什么不用呢

------解决方案--------------------
setVisibel(false)

------解决方案--------------------
setVisibel(true)或者false 用监听器的方法隐藏你想要影藏的窗体，显示你显示的窗体。