// Fig. 10.6: Shape.java
// Shape abstract-superclass declaration.

public abstract class Shape extends Object {
   
   // return area of shape; 0.0 by default
   public double getArea()
   {
      return 0.0;
   } 

   // return volume of shape; 0.0 by default
   public double getVolume()
   {
      return 0.0;
   } 

   // abstract method, overridden by subclasses
   public abstract String getName();

} // end abstract class Shape

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