Maybe maybe not. If you want to take advantage of things like io_uring you're going to be doing that with a JNI lib. Such as this Netty incubator support for it

Maybe maybe not. If you want to take advantage of things like io_uring you're going to be doing that with a JNI lib. Such as this Netty incubator support for it https://github.com/netty/netty-incubator-transport-io_uring https://github.com/netty/netty-incubator-transport-io_uring Also all of the existing JVM IO is done with JNI. How do you think java.io is implemented itself? Of course Loom can change those implementations, but strictly speaking JNI is currently extremely common for Java IO. How big of a task supporting virtual threads for the Java libraries remains to be seen, especially for the unofficial extensions like the sun.nio.* package