Project Loom and Structured Concurrency
Since the article goes out of its way to not mention Kotlin, I'll do it for them since this is both lame and more than a bit disingenuous. Arguably, Kotlin co-routines (and the Flow API) provides a very nice implementation of the exact same concepts on the JVM. As far as I know, the loom integration is already planned and probably implemented to a large degree. Mostly doing that should be straightforward as this pretty much just maps 1 to 1 to things like suspend functions, co-routine scopes, etc.That is a different way of saying that Oracle is doing the right things with Loom. Although bolting this onto the Thread API without cleaning that up is probably an open invitation for hordes of people to do the wrong things. That API already provides plenty of well documented ways to take shots at your feet. IMHO it's a mistake to pretend it's all the same.The main difference with Kotlin co-routines is that the Kotlin implementation is multiplatform and also has implementations that work on IOS (native), in a browser etc. Additionally, you get to depend on nice language features like internal DSL support, the suspend keyword, etc, that make writing code a lot less tedious and error prone. But it's the same kind of code with the same kind of concepts. Finally, it also has lots of higher level primitives. Flow is a recent addition that allows for building properly reactive applications that sits on top of this.So, to answer the obvious question will this replace/deprecate co-routines: no, this will have little to no impact as it will be trivial to support the low level primitives Loom provides just like they already work seamlessly with other implementations like rxjava, spring reactor, javascript promises, etc. They'll support it because it probably provides some performance benefits to use Loom if it's available on the platform but it should not impact how you use co-routines. The same co-routine code you write today will just work on top of Loom once that is available and implemented.