What is the equivalent of the C++ Pair in Java?

Question

Is there a good reason why there is no Pair in Java? What would be the equivalent of this C++ construct? I would rather avoid reimplementing my own.<

Answer 1

Pair would be a good stuff, to be a basic construction unit for a complex generics, for instance, this is from my code:

WeakHashMap, String> map = ...

It is just the same as Haskell's Tuple