Contenido del Curso
Multithreading in Java
Multithreading in Java
Challenge Semaphore
Task
Imagine you have a resource that can be accessed by only two threads at a time. Your task is to create a program that uses a semaphore
to control access to this resource.
Conditions:
- You have a
Resource
class with ause()
method that simulates the use of a resource, such as printing a message and introducing a delay; - You have a
Worker
class that implementsRunnable
; in itsrun()
method, it will attempt to access the resource using asemaphore
; - In the
SemaphoreExample
class, you have amain()
method that initializes asemaphore
with permits for two threads, along with multiple worker threads that will attempt to access the resource; - Ensure that no more than two threads can use the resource at any given time.
How should the program work?
You have 5 threads that want to execute the use()
method simultaneously, but with a Semaphore
, you need to limit the simultaneous execution to 2 threads. As soon as a thread releases the Semaphore
, another thread can begin executing this method. For better clarity in this scenario, it’s recommended to introduce a delay within the use()
method.
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