When should I use ReadWriteLock in Java?

Can you explain when to use ReadWriteLock in Java?

ReadWriteLock is useful when you have a scenario with multiple readers and few writers. It allows concurrent read access while ensuring exclusive write access.

What are the benefits of using ReadWriteLock over a regular synchronized block?

The main benefit is improved performance in read-heavy scenarios. Multiple threads can read simultaneously, reducing contention.

Are there any downsides to using ReadWriteLock?

Yes, if there are too many write operations, it can lead to writer starvation, where readers keep getting access and writers are blocked.

Can you give an example of its implementation?

Sure! Here's a simple example:

ReadWriteLock lock = new ReentrantReadWriteLock();
lock.readLock().lock();
try {
    // read data
} finally {
    lock.readLock().unlock();
}