How comfortable are you with multithreading?

I am well acquainted with multithreading in Java and understand the core concepts: creating and managing threads, synchronization, race conditions, and deadlocks.

I use tools such as:

• synchronized blocks and methods
• classes from java.util.concurrent (ExecutorService, CountDownLatch, Semaphore)
• volatile variables for visibility of changes

For example, to safely increment a counter in a multithreaded environment, I might use AtomicInteger:

import java.util.concurrent.atomic.AtomicInteger;

public class Counter {
    private AtomicInteger count = new AtomicInteger(0);

    public void increment() {
        count.incrementAndGet();
    }

    public int getCount() {
        return count.get();
    }
}

I also understand the importance of avoiding locks and using non-blocking algorithms where possible.