#Conclusion
So, Pizza was originally created by Odersky in order to, among other features, implement generics demonstrated already in languages such as Haskell. This was a first attempt that later lead to jsr-14 which simply added this feature in the Java Programming Language directly. Although Odersky was not satisfied and continued on to develop the Scala Programming Language, jsr-14 generics linked Java with previous more functional languages and is widely used in the community today. Now, with parameterized types and type variables available in Java the distinction between different collection types allows for a much better understanding of contravariance, covariance, and invarianc in the Java language. The ability to implement your own generic types in an attempt to make a more specialized collection allows for such an open source community to develop at a healthier rate as well. These reasons are the broad strokes of the benefits of the jsr-14 implementation.