app9_10.java

JAVA 2面向对象程序设计(随书范例程序)7-9.rar.rar

// app9_10, 通过super关键词来访问父类的变量
class Caaa{
  
   public final void show(){     //父类的show() method
      System.out.println("show() method in class Caaa called");
   }
}   

class Cbbb extends Caaa
{
   public void show(){    //错误，覆盖父类的show() method 
      System.out.println("show() method in class Cbbb called");
   }
}

public class app9_10
{
   public static void main(String args[]){
      Cbbb b=new Cbbb();
      b.show();
   }
}