You're replying to a thread about what it takes to implement a LINQ provider, which was dismissed as every high level language implements it with iterables, then proceed to give non-equivalent examples.
IQueryable<> manipulation has other tools available to it than brute-force iteration, like streams do. Streams may be the closest thing java has, but it's still a fundamentally different thing.
If you insist in telling LINQ === EF, well that isn't what most folks in .NET use System.Linq for.
And back to the ORM thing, jOOQ is one way, there are others, and even if it isn't 1:1 to "from x select whatever" the approach exists.