[imtringued]

>OpenMP is not a language?

Why does it matter that OpenMP is only a standard, rather than a language?

>my point is that Java streams are first-class citizens

They aren't. They were bolted on later and are quite cumbersome.

>without running into the rough edges you will with OpenMP.

I'm pretty sure it is easier to write fast parallel code with OpenMP than with Java streams. In fact, I am always surprised how well OpenMP works, when I get to use it.