Lecture 20 Objectives

At the end of today's class you should

KNOW:

That every class has Object as a superclass
That Java generics allow you to create classes that are parameterized over data types
That generics provide more refined type checking than using Object as a data type for abstraction

BE ABLE TO:

Use Object to abstract over a data type
Use Java generics to abstract over a data type

Sample Exam Question:

We looked at two ways to abstract over the datatype, using Object as the datatype, and using generics to specify the datatype. What is the advantage of using generics over using Object?