Collect HashSet / Java 8 / Regex Pattern / Stream API

Question

Recently I change version of the JDK 8 instead 7 of my project and now I overwrite some code snippets using new features that came with Java 8.

final Matcher         


        

Answer 1

I don't think you can turn this into a Stream without writing your own Spliterator, but, I don't know why you would want to.

Matcher.find() is a state changing operation on the Matcher object so running each find() in a parallel stream would produce inconsistent results. Running the stream in serial wouldn't have better performance that the Java 7 equivalent and would be harder to understand.