Basic HTML version of Foils prepared 18 May 97

Foil 57 Defining a child class

From Java Tutorial - Spring 1997 Part II: Java Language and Object-Oriented Concepts Peking Tutorial, Web Certificate -- Spring-Summer 1997. by Nancy J. McCracken,Geoffrey C. Fox
1 We define a class for movable rectangle objects. It uses x,y from the parent class mPoint for the location of the rectangle, but adds h,w to specify height and width of the rectangle.
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