What is mutex and semaphore in Java ? What is the main difference?

Question

What is mutex and semaphore in Java ? What is the main difference ?

Answer 1

A mutex is used for serial access to a resource while a semaphore limits access to a resource up to a set number. You can think of a mutex as a semaphore with an access count of 1. Whatever you set your semaphore count to, that may threads can access the resource before the resource is blocked.