Chapter 18, Problem 5RE

Program Plan Intro

Java Generics:

• Java generic classes and generic methods allow the programmers to specify, with a single class declaration, a set of related types and with a single method declaration, a set of related methods.
• Using the concept of generics, user can write a generic method sort for sorting objects array then call this method with String arrays, Integer arrays, Double arrays and more for sorting the elements of the array.
• The user can create a single generic method and call it with arguments of different types.
• The compiler handles the methods calls appropriately based on the types of arguments passed to the generic method.

Generic static method:

• Methods that introduce their own type parameters are called as generic method.
• List of type parameters included inside the angle bracket appears before the method's return type.
• Generic static methods in Java are are type-erased on compile time and changed to its Bound type. The bound type is the class mentioned inside diamond bracket or Object type.