What are some examples of thread safety in Java?

What are some examples of thread safety in Java?

Thread safety in Java ensures that shared data is accessed by multiple threads without conflict. Examples include using synchronized methods, locks, and concurrent collections.

Can you explain how synchronized methods work?

Synchronized methods in Java allow only one thread to access a method at a time, preventing data inconsistency. You can declare a method as synchronized by adding the 'synchronized' keyword.

What about using locks instead of synchronized methods?

Using locks provides more flexibility than synchronized methods. You can lock specific code blocks and have finer control over the locking mechanism, allowing for better performance in some scenarios.

Are there any built-in concurrent collections in Java?

Yes, Java provides several concurrent collections like ConcurrentHashMap, CopyOnWriteArrayList, and BlockingQueue, which are designed for thread-safe operations.