accumulateAndGet
Atomically updates (with memory effects as specified by VarHandle.compareAndSet) the current value with the results of applying the given function to the current and given values, returning the updated value. The function should be side-effect-free, since it may be re-applied when attempted updates fail due to contention among threads. The function is applied with the current value as its first argument, and the given update as the second argument.
Return
the updated value
Since
1.8
Parameters
x
the update value
accumulatorFunction
a side-effect-free function of two arguments