package second;

import java.awt.*;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

public class BorderLayoutDemo {

    private Frame fb;

    private Button b1,b2,b3,b4,b5;//声明5个button

    //构造函数，实例化button 1 - 5

    BorderLayoutDemo(){

        b1 = new Button("1");//上北

        b2 = new Button("2");//下南

        b3 = new Button("3");//左西

        b4 = new Button("4");//右东

        b5 = new Button("5");//中

    }

    public static void main(String[] args){

        BorderLayoutDemo ly = new BorderLayoutDemo();

        ly.show();//显示

    }

    public void show(){

        fb = new Frame("BorderLayout顺序布局");//框架

        fb.setSize(500,200);//设置大小

        fb.setLayout(new BorderLayout());

        fb.add(BorderLayout.NORTH,b1);//将按钮添加到框架中

        fb.add(BorderLayout.SOUTH,b2);

        fb.add(BorderLayout.WEST,b3);

        fb.add(BorderLayout.EAST,b4);

        fb.add(BorderLayout.CENTER,b5);

        fb.addWindowListener(new WindowAdapter(){//监视关闭按钮，不然TMD根本关不掉

            public void windowClosing(WindowEvent evt){

                System.exit(0);

            }

        });

        fb.setVisible(true);//最后显示出来

    }

}

效果如下：