Following we see examples of the results of running j_thread.d.
Here it is running while Code/Java/Func_abc is executing.
TIME PID/TID -- THREAD
2007 Sep 24 04:01:34 311512/5 => Finalizer
2007 Sep 24 04:01:34 311512/4 => Reference Handler
2007 Sep 24 04:01:34 311512/7 => CompilerThread0
2007 Sep 24 04:01:34 311512/6 => Signal Dispatcher
2007 Sep 24 04:01:34 311512/8 => CompilerThread1
2007 Sep 24 04:01:34 311512/9 => Low Memory Detector
^C
The fields of the output are, in order, Event time, Process ID/Thread ID,
entry (=>) or exit (<=) and Thread name.
In this example we see six different threads starting, but we do not see
thread exit events as the JVM exited when the program stopped.