Distinguishing between Java threads and OS threads?

Question

How do I distinguish running Java threads and native threads?

In Linux there will be Parent process for every child process, and they say 0 is the parent of all the

Answer 1

Can a running Java threads can be suspended or killed from another Java code ?

In theory yes. In practice, the Thread.kill() and Thread.suspend() methods are deprecated because they are unsafe except in very limited situations. The basic problem is that killing or suspending a Java thread is likely to mess up other threads that depend on it, and shared data structures that it might have been in the middle of updating.

If "another Java code" is meant to mean another JVM, then the chances of it working are even less. Even if you figured out how to send the relevant thread signal, the results are completely unpredictable. My bet is that the "target" JVM would crash.