May 2024
Intermediate to advanced
889 pages
37h 5m
English
Content preview from Java Programming by Pearson
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Inheritance in Java • 237
Explanation: In the program, there is an abstract class fi gure. The class has two data members, s1 and s2, which
stand for two sides of the fi gure. The class has two abstract methods: area and tellsides. Each geometrical fi gure
which inherits this class must calculate the area and tell the number of sides it has. The class also has constructor
which takes two parameters of double type and assign the values to s1 and s2.
The class is inherited by two classes, Rectangle and Triangle, which provide the implementation of
area and tellside. Both use a fi nal member side, which represents number of sides a fi gure has. ...
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