What are some examples of synchronization primitives in Java?

What are some examples of synchronization primitives in Java?

In Java, synchronization primitives include keywords and classes like 'synchronized', 'volatile', 'Lock', and 'Semaphore'. Would you like to know how to use them?

Yes, can you explain how the 'synchronized' keyword works?

The 'synchronized' keyword in Java is used to lock a method or block of code, ensuring that only one thread can access it at a time. This helps prevent thread interference and memory consistency errors.

What about the 'Lock' interface? How is it different from 'synchronized'?

The 'Lock' interface provides more flexible locking mechanisms than 'synchronized'. It allows for features like try-lock and timed lock, which can help avoid deadlocks and improve performance in certain scenarios.

Can you give me a code example using 'Semaphore'?

Sure! 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) {
        // Acquire a permit
        try {
            semaphore.acquire();
            // Critical section
            System.out.println("Accessing critical section...");
        } catch (InterruptedException e) {
            e.printStackTrace();
        } finally {
            // Release the permit
            semaphore.release();
        }
    }
}