边界布局相关代码

import java.awt.BorderLayout;import java.awt.Container;import javax.swing.*;

public class BorderLayoutTest extends JFrame{ public static void main(String args[]) {  JFrame frame=new JFrame("边界布局管理器");  BorderLayout b=new BorderLayout();  JButton buttonEast=new JButton("东");  JButton buttonWest=new JButton("西");  JButton buttonNorth=new JButton("北");  JButton buttonSouth=new JButton("南");  JButton buttonCenter=new JButton("中");    /*将按钮放入到边界布局管理器的不同区域上*/  frame.add(buttonEast,b.EAST);  frame.add(buttonWest,b.WEST);  frame.add(buttonNorth,b.NORTH);  frame.add(buttonSouth,b.SOUTH);  frame.add(buttonCenter,b.CENTER);    frame.setBounds(400, 200, 500, 300);  frame.setVisible(true);  frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);  }

}