In addition, Java 19 introduced the Executors.newThreadPerTaskExecutor(ThreadFactory threadFactory) method, which can take a ThreadFactory that builds virtual threads.

The Java 11 and Java 21 codes are available on the SimpleVirtualThreads repository with instructions to run the comparison in both Java 11 and Java 21 containers. Putting it all together: Virtual ...

Virtual threads, revealed in Java's Project Loom and generally available with the Java 21 LTS, promise unparalleled scalability, simplified asynchronous coding and more efficient resource utilization.

Virtual threads, which are user-mode implementations of java.lang.Thread that do not block OS threads, enable near-optimal hardware utilization.