shape.java

来自「经典的<<C how to program>一书第三版的例程。」· Java 代码 · 共 24 行

// Fig. 27.4: Shape.java
// Definition of abstract base class Shape

public abstract class Shape extends Object {
   public double area() { return 0.0; }
   public double volume() { return 0.0; }
   public abstract String getName();   
}

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