Java equivalent for Python pool.map/ Multiprocessing -

i wondering if point me simple equivalent of python's multiprocessing module in java.

i have simple parallel processing scenario (where no 2 processes interact): take data set , split 12 , apply java method 12 datasets, collect results , join them in list of sort same ordering.

java being "pro" language appears have multiple libraries , methods - can java newbie started?

i minimal of coding - said requirement pretty straightforward.

update: how multiprocessing in java, , speed gains expect?

this seems indicate threads way go. expect have no choice wade bunch of locks (pun unintended) , wait ship sail. simple examples welcome nevertheless.

there's no exactly-compatible class, executorservice gives need implement it.

in particular, there's no function map callable on collection , wait on results, can build collection<callable<t>> out of callable<t> , collection<t>, call invokeall, returns list<future<t>>.

(if want emulate of other functions multiprocessing.pool, need loop around submit instead , build own collection of things wait on. map simple.)