What advantages does Scala have over Java for concurrent programming?

Question

How can scala make writing multi-threaded programs easier than in java? What can scala do (that java can\'t) to facilitate taking advantage of multiple processors?

Answer 1

There is nothing Scala does that Java does not. That would be silly. Scala runs on the same JVM that Java does.

What Scala does do is make it easier to write, easier to reason about and easier to debug a multi-thread program.

The good bits of Scala for concurrency are its focus on immutable objects, its message-passing and its Actors.

This gives you thread-safe read-only data, easy ways to pass that data to other threads, and easy use of a thread pool.