How to implement a Binary Semaphore Class in Java?

Question

I can see how a "standard" Semaphore Class can be implemented in Java. However, I cant see how to implement a Binary Semaphore Class in Java. How does such implementation work? When should I call the wake and notify methods to wake and stop the threads that are on the semaphores? I understand what binary semaphores are, but I have no idea of how to code them.

Edit Note: Realize that I said "BINARY" Semaphore class. The standard Semaphore class I already did and I know its correct so the standard Semaphore Class does not interest me.

Answer 1

Yes, you can. A semaphore with a single permit is a binary semaphore. They control access to a single resource. They can be viewed as some kind of a mutex/lock.

Semaphore binarySemaphore = new Semaphore(1);