How UUID:: randomUUID interpreted?

Question

I know that in Java 8 , (String[]::new) is interpreted as : size-> new String[].

I am eager to know how (UUID :: randomUUID) is interpreted? It is used as Stream.generate(UUID :: randomUUID). But, I wanna know, what exactly is meant by UUID :: randomUUID

How generator function acts here?

Answer 1

UUID::randomUUID is a method reference to the randomUUID method on UUID.

Generate accepts a Supplier , and UUID.randomUUID fufills that Functional Interface .

In short, String[]::new may have special behavior, but arrays are an exception, not the normal rule, and I hadn't actually previously thought about the size needing to be defined.