About Question com.enthuware.ets.scjp.v6.2.183 :
Posted: Tue Oct 21, 2014 6:37 am
I know the OS decides when it starts but isn't it the thread's run method implementation which usually decides for how much time it runs?
No, actually, the programmer's code decides when a thread is started (when you call its start method) but only the JVM can decide how long and when a thread will actually get to run (before the thread's run method terminates, of course).
In other words, JVM cannot automatically start a thread and a programmer cannot tell when a thread will actually run.
HTH,
Paul.