borderlayoutdemo.java

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import java.awt.BorderLayout;
import javax.swing.JFrame;
import javax.swing.*;
public class BorderLayoutDemo extends JFrame
{
	  //声明并创建BorderLayout布局管理器对象borderLayout1
    BorderLayout borderLayout1 = new BorderLayout();
    JButton jbutton1,jbutton2,jbutton3,jbutton4,jbutton5;
    public BorderLayoutDemo()
    {
    	  super("BorderLayout");
        getContentPane().setLayout(borderLayout1);
        jbutton1=new JButton("上");    //创建名为"上"的按钮
        jbutton2=new JButton("下");    //创建名为"下"的按钮
        jbutton3=new JButton("左");    //创建名为"左"的按钮
        jbutton4=new JButton("右");    //创建名为"下"的按钮
        jbutton5=new JButton("中");    //创建名为"中"的按钮
        
        //将JButton的按钮对象,使用add()方法加入到边框布局的制定位置
        getContentPane().add(jbutton1,borderLayout1.NORTH);
        getContentPane().add(jbutton2,borderLayout1.SOUTH);
        getContentPane().add(jbutton3,borderLayout1.WEST);
        getContentPane().add(jbutton4,borderLayout1.EAST);
        getContentPane().add(jbutton5,borderLayout1.CENTER);

    }

    public static void main(String[] args)
    {
        BorderLayoutDemo borderLayoutDemo = new BorderLayoutDemo();
        borderLayoutDemo.setSize(400,400);   //设置窗口大小
        borderLayoutDemo.setVisible(true);   //设置窗口为可见
        borderLayoutDemo.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }  
}