What are the differences between collections and concurrent collections?

What are the main differences between collections and concurrent collections in Java?

Collections in Java are not thread-safe, while concurrent collections are designed for safe use in multi-threaded environments.

Can you give me examples of concurrent collections?

Sure! Examples include ConcurrentHashMap, CopyOnWriteArrayList, and BlockingQueue.

When should I use concurrent collections instead of regular collections?

Use concurrent collections when you expect multiple threads to access or modify the collection simultaneously.

Are there performance trade-offs with concurrent collections?

Yes, concurrent collections may have some overhead due to synchronization, but they improve safety in multi-threaded scenarios.