Go to the Java API and review the Rectangle class briefly. As directed below, create a subclass of the Rectangle class called BetterRectangle as described below. Create another class called RectangleTester, which fully tests the BetterRectangle, by displaying a menu that allows a user to process data for multiple rectangles until they choose to quit. Be sure to include sample runs as block comments in your tester source code file.

P9.10 The Rectangle class of the standard Java library does not supply a method to compute the area or perimeter of a rectangle. Provide a subclass BetterRectangle of the Rectangle class that has getPerimeter and getArea methods. Do not add any instance variables. In the constructor, call the setLocation and setSize methods of the Rectangle class. Provide a program that tests the methods that you supplied.

P9.11 Repeat excersize P9.10, but in the BetterRectangle constructor, invoke the super class constuctor.

Use Dia to create a UML class diagram for BetterRectangle, being sure to show the parent class and relationship to Rectangle (do not need variables/methods for this class).