What is thread safety in Java collections?

What is thread safety in Java collections?

Thread safety in Java collections refers to the ability of a collection to be accessed by multiple threads without leading to data inconsistency or corruption.

Can you give me examples of thread-safe collections in Java?

Sure! Examples of thread-safe collections in Java include Vector, Hashtable, and the synchronized wrappers like Collections.synchronizedList.

What are the performance implications of using thread-safe collections?

Thread-safe collections can have performance overhead due to synchronization, which may lead to slower access times compared to non-thread-safe collections.

When should I use concurrent collections instead?

You should use concurrent collections like ConcurrentHashMap or CopyOnWriteArrayList when you need better performance in a multi-threaded environment.