Shape Area Hierarchy

Build a small polymorphic hierarchy. The abstract class Shape declares int Area(). Create Rectangle (constructor int width, int height, area width * height) and Triangle (constructor int baseLen, int height, area (baseLen * height) / 2), each inheriting Shape and implementing Area(). The tester sums the areas in a Shape[]. Do NOT write a Main method.

For a Rectangle(2, 3) and a Triangle(4, 3) the program prints the output shown in Expected Output.

Expected Output:

Total area: 12↵

= newline. The output ends with a newline — print one after the last line.

Hints4 available

Topics:

Inheritance

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