Description: Define an abstract class Shape represents a shape class, with a calculation of the shape of the area of abstract methods, an abstract method to calculate the shape of the perimeter. Definition of a Shape class, subclass Circle class represents a circle, such a member variable of radius, this class, define a separate class test such. Define a Shape subclass Retangle class represents a rectangle, such has said the height and width member variables of this class, define a separate class test such
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JavaApplication7.java
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