Consider the stack class of Section 7.7.2.

(a) Extend this class with an appropriate constructor and a main method to test the stack.

(b) Extend this class with a push method that throws a stack overflow exception if a push is made onto a full stack.

(c) Extend the stack class of Section 7.7.2 with an appropriate constructor and a main method to test the stack using the assert statement of Java 1.4.