Producer Consumer Problem in Java

Question

I know three methods of solving:
1. By using Blocking queue
2. By using synchronized and wait,notify.
3 And other By using Semaphore .
My question is which is the best approach of solving the problem.

Answer 1

This surely depends on your problem and its specific requirements (for example speed, number of threads, ...).
I just want to throw in another solution, namely the reactive model of RxJava. It's a really cool framework for solving those problems on an other level of abstraction.