import javax.swing.*;
import java.awt.*;
public class BorderLayoutDemo extends JFrame {
  public BorderLayoutDemo() {
    super("網格布局");
     this.setSize(300,200);
     this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE );
  }
  public void setLayout(){
    BorderLayout BorderFrame=new BorderLayout();
    Container container=getContentPane();
    container.setLayout(BorderFrame);
    JButton btnEast =new JButton("東");
    JButton btnSouth=new JButton("南");
    JButton btnWest=new JButton("西");
    JButton btnNorth=new JButton("北");
    JButton btnCenter=new JButton("中");
    container.add(btnEast, BorderLayout.EAST);
    container.add(btnCenter,BorderLayout.CENTER);
    container.add(btnWest,BorderLayout.WEST);
    container.add(btnSouth,BorderLayout.SOUTH);
    container.add(btnNorth,BorderLayout.NORTH);
  }
  public static void main(String[] args){
    BorderLayoutDemo BorderFrame = new BorderLayoutDemo();
    BorderFrame.setLayout();
    BorderFrame.show();
  }
}