Description: Personal original code: the operation of the rectangles, circles, squares and other shapes.Write java application procedures, the definition of abstract class Shape, abstract methods showArea (), calculate the area and define the rectangle class Rectangle, Square class Square, round class of the Circle, according to their respective properties, find the respective area showArea method,in the main method to construct three objects, to call showArea method.
Defined interface DiagArea, which contains the method of a double getDiagonal () Find the diagonal, double the getArea () find the area to define a rectangle class implements this interface, and to expand their own member variables and methods, define the class inheritance of a square rectangle (such as length w and width h, rectangle, square edge of the x, and corresponding constructor, a method is a direct display side length, area and diagonal length), the other in the main method to test the classes.
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ShapeExp1.java
本Java程序设计详细要求.txt
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