From an object-oriented programming perspective ... Only functional interfaces can use the lambda feature in Java. Abstract classes with only one abstract method cannot use lambdas.

Similar abstraction can be used for other functional operations. Streams and lambdas are an incredibly useful way to work with Java’s collections. Functional programming is in general a great ...

If you want to master functional programming, the best place to start ... something else seems to be so incredibly vague and abstract that is almost seems meaningless. However, seasoned Java ...