#ReactiveStreams gave us control. #VirtualThreads promise freedom. @adamwarski asks: can we have both? Spoiler: more than pretty syntax.

Read his take & share yours: https://javapro.io/2025/03/27/from-reactive-streams-to-virtual-threads/
(cc @nipafx @sdeleuze @reactivex @trisha_gee) #JVM #Java21 #ProjectLoom #Java #JavaDevs

For those of you who base your (negative) view on #java 6 (or perhaps 8) I submit that there is modern #java21 you haven't seen and might like.

https://github.com/steely-glint/fxess/blob/4d7a212cec99b7326509f13c65232a615ca7aa8b/src/main/java/uk/co/westhawk/fxess/NextSun.java#L130

Those 20 lines grab a weather forecast, update the expires, parse the resulting json into a cache list of 'sunny hours' - then map-reduce the cache into a prediction of when it will next be sunny and for how long.

(used as info for car charging decisions)

All of this was much uglier in Java6

Does anyone have any recommended reading about the context behind Java’s virtual threads, the system architecture behind them and the related systems concepts?

In my open source projects I am still on the bottom right corner.

My projects are quite old and it will require a bigger effort to update them.
#opensource #programming #java #java21