Java 各种Layout和Panel自由组合思考题实例。UI三种常见的布局方式.FlowLayout,BorderLayout,GridLayout.教程

思考题：利用上面的三种Layout和Panel知识写一个如下类似的Frame，Layout可以自由组合(答案不唯一)

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写代码之前切记直接动手写代码,先构思，构思，构思，一般代码只用20%的时间，80%用来思考构思。

一、构思步骤.

1. 设置GridLayout(2,1);创建一个2行1列的网格,上面个的部分添加一个名为north的Panel，下面的部分添加一个名为south的Panel

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2. north south 面板Panel 都设置一个 BorderLayout的布局

south 分别使用 southWest 按钮，southCenter 面板,southEast按钮(添加)
north 分别使用 northWest 按钮，northCenter 面板，northEast按钮（添加)
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3. southCenter 设置网格布局 GridLayout(2,1) 2行1列

north 设置 GridLayout(2,2)网格布局,

使用对应的按钮填充
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二、写代码

package GUI.Layout布局管理器;

import java.awt.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class Test {
    public static void main(String[] args) {
        Frame frame = new Frame("习题Frame");
        //一、gird（2，1）
        frame.setLayout(new GridLayout(2,1,20,10));
        Panel north = new Panel();
        Panel south = new Panel();
        frame.add(north,new GridLayout(1,1));
        frame.add(south,new GridLayout(2,1));
        //二、border
        north.setLayout(new BorderLayout());
        south.setLayout(new BorderLayout());
        north.add(new Button("northWest"),BorderLayout.WEST);
        north.add(new Button("northEast"),BorderLayout.EAST);
        Panel northCenter = new Panel();
        north.add(northCenter,BorderLayout.CENTER);

        south.add(new Button("southWest"),BorderLayout.WEST);
        south.add(new Button("southEast"), BorderLayout.EAST);
        Panel southCenter = new Panel();
        south.add(southCenter,BorderLayout.CENTER);
        //三、gird
        northCenter.setLayout(new GridLayout(2,1,20,20));
        southCenter.setLayout(new GridLayout(2,2,20,20));
        northCenter.add(new Button("northCenterr1c1"),new GridLayout(1,1));
        northCenter.add(new Button("northCenterr2c1"),new GridLayout(2,1));

        southCenter.add(new Button("southCenterr1c1"),new GridLayout(1,1));
        southCenter.add(new Button("southCenterr1c2"),new GridLayout(1,2));
        southCenter.add(new Button("southCenterr2c1"),new GridLayout(2,1));
        southCenter.add(new Button("southCenterr2c2"),new GridLayout(2,2));




        //set location size background
        frame.setLocation(100,100);
        frame.setSize(400,400);
        frame.setBackground(new Color(255, 255, 255));
        north.setBackground(new Color(99, 255, 240));




        //set visibility.
        frame.setVisible(true);
        frame.setLayout(new BorderLayout());
        //add closing listener.
        frame.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                System.out.println("exit successfully");
                System.exit(0);
            }
        });
    }
}