How do you use Semaphore with a simple code example?

Semaphore is a synchronization aid that can be used to control access to a shared resource in concurrent programming. It maintains a set of permits that can be acquired and released by threads. Here is a simple example of how to use a Semaphore in Java.


        import java.util.concurrent.Semaphore;

        public class SemaphoreExample {
            // Create a Semaphore with 1 permit
            private static final Semaphore semaphore = new Semaphore(1);

            public static void main(String[] args) {
                Thread thread1 = new Thread(new Task(), "Thread-1");
                Thread thread2 = new Thread(new Task(), "Thread-2");

                thread1.start();
                thread2.start();
            }

            static class Task implements Runnable {
                @Override
                public void run() {
                    try {
                        System.out.println(Thread.currentThread().getName() + " is trying to acquire the semaphore.");
                        // Acquire the semaphore
                        semaphore.acquire();
                        System.out.println(Thread.currentThread().getName() + " has acquired the semaphore.");
                        // Simulate work by sleeping
                        Thread.sleep(2000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    } finally {
                        // Release the semaphore
                        System.out.println(Thread.currentThread().getName() + " is releasing the semaphore.");
                        semaphore.release();
                    }
                }
            }
        }

How do you use Semaphore with a simple code example?

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How do you use Semaphore with a simple code example?

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