1java.lang.ThreadGroup[name=main,maxpri=10]
2  java.lang.ThreadGroup[name=system,maxpri=10]
3  main
4  10
5  false
6java.lang.ThreadGroup[name=system,maxpri=10]
7  null
8  system
9  10
10  false
11main:
12  [Thread[main,5,main]]
13  []
14system:
15  [Thread[FinalizerDaemon,5,system], Thread[FinalizerWatchdogDaemon,5,system], Thread[HeapTaskDaemon,5,system], Thread[Metrics Background Reporting Thread,5,system], Thread[ReferenceQueueDaemon,5,system], Thread[Signal Catcher,5,system]]
16  [java.lang.ThreadGroup[name=main,maxpri=10]]
17art.Test925$CustomThreadGroup[name=TEST GROUP,maxpri=10]
18  java.lang.ThreadGroup[name=main,maxpri=10]
19  TEST GROUP
20  10
21  false
22