example13_1.java

不错的教程 适合中高级人员的使用

import java.applet.*;import java.awt.*; 
class Mypanel1 extends Panel 
{  Checkbox box1,box2,box3;CheckboxGroup sex;
   Mypanel1()
   {  sex=new CheckboxGroup();
      box1=new Checkbox("男",true,sex);
      box2=new Checkbox("女",false,sex); 
      add(box1);add(box2);
   }
}
class Mypanel2 extends Panel 
{  Checkbox box1,box2,box3;   
   Mypanel2() 
   {  box1=new Checkbox("读书");
      box2=new Checkbox("电脑"); 
      box3=new Checkbox("电影");
      add(box1);add(box2);add(box3);
   }
}
public class Example13_1 extends Applet 
{  Mypanel1 panel1;Mypanel2 panel2;
   public void init()
   {  setLayout(new GridLayout(1,2));
      panel1=new Mypanel1();panel2=new Mypanel2();
      add(panel1);add(panel2);
   }
}