Question

I want a Mutex in Java which let me to wait on it in a thread and release it in another thread. I know that I can use a Semaphore with capacity of 1 but the problem is that the “acquire()” method throws “InterruptedException”. Is there any special synchronization way for this purpose in Java?

Answer 1

Luckily, Semaphore provides this method for you 🙂

public void acquireUninterruptibly()

Acquires a permit from this semaphore, blocking until one is
available. Acquires a permit, if one is available and returns
immediately, reducing the number of available permits by one.

If no permit is available then the current thread becomes disabled for
thread scheduling purposes and lies dormant until some other thread
invokes the release() method for this semaphore and the current thread
is next to be assigned a permit.

If the current thread is interrupted while waiting for a permit then
it will continue to wait, but the time at which the thread is assigned
a permit may change compared to the time it would have received the
permit had no interruption occurred. When the thread does return from
this method its interrupt status will be set.