Learn how to use the @Locked annotation introduced in Lombok to better support virtual threads.

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Project Lombok's @Locked annotation, introduced in version 1.18.32, is designed to enhance support for virtual threads in Java by acting as a variant of the ReentrantLock, ensuring better performance in concurrent applications. It simplifies the locking mechanism in methods, reducing boilerplate code, and provides a clear advantage over the @Synchronized annotation, particularly with virtual threads. Multiple methods can share the same lock, or different locks can be specified for read and write operations to boost performance.

A Guide to @Locked in Lombok

6. Difference Between @Locked and @Synchronized

<p>This doesn’t seems like real multi threading processing</p>
<pre><code>Thread.Builder builder = Thread.ofVirtual().name(&quot;worker-&quot;, 0);
Counter counter = new Counter();

Runnable task = counter::increment;

Thread t1 = builder.start(task);
t1.join();

Thread t2 = builder.start(task);
t2.join();
</code></pre>
