Why Lamda's?

Enables Functional Programming.
Readable and concise code.
Better API's and libraries.
Enable support for parallel Processing.

Functional Programming vs Object Oriented Programming.

->More readable and maintainable code in functional.
->Java is still OOPs.

Code in OOPs

->Everything is an object
->All code blocks are associated with classes and objects.

Lambdas vs Interface Implementations

->Lambas are like Anonymous Inner class.(In line implementation).