How do I implement atomicity in Java?

How do I implement atomicity in Java?

To implement atomicity in Java, you can use the synchronized keyword or the java.util.concurrent package.

Can you explain how the synchronized keyword works?

The synchronized keyword ensures that a method or block of code is accessed by only one thread at a time, providing atomicity.

What about using java.util.concurrent? How does that help?

The java.util.concurrent package provides higher-level concurrency utilities like AtomicInteger and ReentrantLock, which help manage atomic operations more efficiently.

Are there any performance considerations I should be aware of?

Yes, using synchronized can lead to contention and performance bottlenecks. It's often better to use concurrent collections or atomic classes for better performance.