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

Parallel streams utilize the fork/join pool which defaults to the number of available cores. This can help improve performance, but it's limited by the pool size and the fact that this is I/O-bound ...

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.