201671010129 2016-2017-2 "Java Programming" summary of generic programming for learning Java

Generic programming means that the code you write can be reused by many different types of objects.

Upper bound of generic variable: the upper bound declared by the extends keyword can be either a class or an interface.

Generic variable lower bound: the type of a generic parameter that is fixed by the keyword super is a type or other superclass. When a generic variable is declared so, when a generic type is instantiated, it needs to be explicitly typed as the specified upper-bound type or its subclass.

A generic class is the creation of a class that uses a type as a parameter. is similar to defining a method in a class.

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201671010129 2016-2017-2 "Java Programming" summary of generic programming for learning Java