What are the best practices for using immutable collections in Java?

What are the best practices for using immutable collections in Java?

When using immutable collections in Java, it's best to use the built-in classes like List.of(), Set.of(), and Map.of(). These provide a simple and efficient way to create immutable instances.

Why should I use immutable collections instead of mutable ones?

Immutable collections are thread-safe, easier to reason about, and can help prevent bugs related to unintended modifications.

Can you give an example of creating an immutable list?

Sure! You can create an immutable list like this: List<String> immutableList = List.of("apple", "banana", "cherry");.

Are there any performance considerations I should be aware of?

Yes, while immutable collections can have overhead due to their creation, they can improve performance in concurrent applications by avoiding synchronization.