app10_2.java

Java范例程序ch11-13.rar

// app10_2, 用抽象类类型的变量来建立对象
public class app10_2
{
   public static void main(String args[])
   {
      CShape shape1=new CRectangle(5,10); 
      shape1.setColor("Yellow");
      shape1.show();
      
      CShape shape2=new CCircle(2.0); 
      shape2.setColor("Green"); 
      shape2.show(); 
            
   }
}