How do semaphores work in Java?

Can you explain how semaphores work in Java?

Sure! Semaphores in Java are used to control access to a shared resource by multiple threads. They maintain a set count that represents the number of permits available.

How do you create a semaphore in Java?

You can create a semaphore using the Semaphore class from the java.util.concurrent package. For example: Semaphore semaphore = new Semaphore(1);.

What is the difference between a binary semaphore and a counting semaphore?

A binary semaphore can only take values 0 or 1, while a counting semaphore can take any non-negative integer value, allowing more than one thread to access the resource.

Can you give an example of using a semaphore in a Java program?

Certainly! Here's a simple example:

import java.util.concurrent.Semaphore;

public class SemaphoreExample {
    private static final Semaphore semaphore = new Semaphore(1);

    public static void main(String[] args) {
        // Simulate threads accessing a resource
    }
}