RxJava vs Java 8 Parallelism Stream

Question

What are all the similarities and diferences between them, It looks like Java Parallel Stream has some of the element available in RXJava, is that right?

Answer 1

Rx is an API for creating and processing observable sequences. The Streams API is for processing iterable sequences. Rx sequences are push-based; you are notified when an element is available. A Stream is pull-based; it "asks" for items to process. They may appear similar because they both support similar operators/transforms, but the mechanics are essentially opposites of each other.