Benefits of immutable objects in Java

Benefits of immutable objects in Java are:

1. Reference caching: References to immutable objects can be cached since there state is not going to change.throughout the program.

2. Easier to parallize: Since there are no conflicts between 2 objects, we can easily run operations in parallel.

3. Thread safe: Immutable objects are thread-safe so you will not have any synchronisation issues.

4. Hash key: Immutable objects are best as key Hash data structures.(Map keys and Set elements) since these typically do not change once created.

5. Easier to write code.