How does thread safety work in Java's Collections Framework?

How does thread safety work in Java's Collections Framework?

In Java, thread safety in the Collections Framework ensures that collections can be safely accessed and modified by multiple threads concurrently. This is crucial for avoiding data corruption.

What are some thread-safe collections in Java?

Some thread-safe collections include Vector, Hashtable, and the synchronized wrappers like Collections.synchronizedList(). Additionally, the Concurrent package offers collections like ConcurrentHashMap.

When should I use a thread-safe collection?

You should use a thread-safe collection when multiple threads are accessing or modifying the collection simultaneously to prevent data inconsistency and ensure safe operations.

Are there performance trade-offs with thread-safe collections?

Yes, thread-safe collections can have performance trade-offs due to synchronization overhead. It's important to choose the right collection based on your application's concurrency needs.