Usage of function type congruent lambda expressions in Java 8

Question

I struggle with the definition and usage of the

Stream.collect(Supplier supplier, BiConsumer accumulator, BiConsumer comb         


        

Answer 1

ArrayList::add actually has 2 parameters. The ArrayList object on which you call the add method and the parameter to add.

ArrayList::add is equivalent to (list, element) -> list.add(element) and so it works as a BiConsumer