border2.java

java程序设计 清华出版社 孙燮华老师编写的程序源代码

    //border2.java
    //Author X.H.Sun
    import java.awt.*;
    import javax.swing.*;
    
    public class border2 extends Frame{
      public border2(){
        setLayout(new BorderLayout());
        add(new JButton("North"), BorderLayout.NORTH);
        add(new JButton("West"), BorderLayout.WEST);
        add(new buttonpanel(), BorderLayout.CENTER);
        setSize(250,150);
        setVisible(true);
      }

      class buttonpanel extends Panel{
        JButton jbutton1, jbutton2;
        buttonpanel(){
          setLayout(new GridLayout(2, 1));
          jbutton1 = new JButton("Center1");
          add(jbutton1);
          jbutton2 = new JButton("Center2");
          add(jbutton2);
        }
      }
      public static void main(String args[]){
        border2 myBorder=new border2();
      }
    }