Thread in Java - aidarko/dev-notes GitHub Wiki
Sometimes it's useful to to into interviews. The question about what is a Thread in Java (yep, again 🤦♂️), had lead to the book "Java Threads 3rd edition", chapter "Thread Scheduling".
Short variant might be found here: https://www.developer.com/design/an-introduction-to-jvm-threading-implementation/
The best part: New Linux kernels use the Native Posix Thread Library (NPTL), which provides the same one-to-one mapping of Java threads to kernel threads that we’ve seen in other operating systems.