Great job learning about generics! In this lesson we’ve covered how:

• Generics help us make generic, scalable code.
• The diamond operator (<>) is used to define generic classes, interfaces, or methods.
• Generics provide compile-time type safety and bug detection as opposed to raw types.
• We can create multiple bound generic classes, interfaces, and methods.
• Wildcards are used to define unknown types.
• To Add upper bounds to type parameters and wildcards.
• To Add lower bounds to wildcards.

Knowing these topics will help you create scalable, type safe code, and give you a better understanding of the Java collections framework (we’ll learn about this later).