paneltest.java

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     import java.awt.*;
     import java.applet.*;

     public class PanelTest extends Applet
     {          
          public void init() 
          {
               // 设置applet的布局为默认的 FlowLayout
               setLayout(new FlowLayout());

               // 创建一个2x2 GridLayout的Panel，并添加4个按钮 
               // 然后把这个Panel放到applet上
               Panel p1 = new Panel();
               p1.setLayout(new GridLayout(2, 2));
               p1.add(new Button("B1"));
               p1.add(new Button("B2"));
               p1.add(new Button("B3"));
               p1.add(new Button("B4"));   
               add(p1);            

               // 创建第二个Panel，布局为BorderLayout,并添加5个按钮 
               // 然后把这个Panel放到applet上
               Panel p2 = new Panel();
               p2.setLayout(new BorderLayout());
               p2.add(new Button("North"),  BorderLayout.NORTH);
               p2.add(new Button("South"),  BorderLayout.SOUTH);
               p2.add(new Button("East"),   BorderLayout.EAST);
               p2.add(new Button("West"),   BorderLayout.WEST);  
               p2.add(new Button("Center"), BorderLayout.CENTER);    
               add(p2);            

          }    // init

     }    // PanelTest