$ java -Djava.compiler=NONE HangingProgram
^\SIGQUIT

Full thread dump Classic VM (JDK-1.2-V, green threads):
 "Thread-1" (TID:0xebc9c0f0, sys_thread_t:0x130180, state:MW) prio=5
    at mythread.stopper(HangingProgram.java:9)
    at mythread.run(HangingProgram.java:19)
 "Thread-0" (TID:0xebc9c150, sys_thread_t:0x12f960, state:CW) prio=5
    at java.lang.Thread.sleep(Native Method)
    at mythread.stopper(HangingProgram.java:12)
    at mythread.run(HangingProgram.java:19)
 "Finalizer" (TID:0xebc98320, sys_thread_t:0x69418, state:CW) prio=8
    at java.lang.Object.wait(Native Method)
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:112)
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:127)
    at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:174)
 "Reference Handler" (TID:0xebc983b0, sys_thread_t:0x64f68, state:CW) prio=10
    at java.lang.Object.wait(Native Method)
    at java.lang.Object.wait(Object.java:424)
    at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:114)
 "Signal dispatcher" (TID:0xebc983e0, sys_thread_t:0x5e1e8, state:R) prio=5
 "main" (TID:0xebc981e0, sys_thread_t:0x26bb0, state:CW) prio=5
    at java.lang.Object.wait(Native Method)
    at java.lang.Object.wait(Object.java:424)
    at HangingProgram.main(HangingProgram.java:33)
Monitor Cache Dump:
  java.lang.Class@EBC9BEB8/EBCFC538: owner "Thread-0" (0x12f960) 1 entry
     Waiting to enter:
            "Thread-1" (0x130180)
  java.lang.ref.ReferenceQueue$Lock@EBC98338/EBCCE028: <unowned>
     Waiting to be notified:
            "Finalizer" (0x69418)
  mythread@EBC9C150/EBCFC608: <unowned>
     Waiting to be notified:
            "main" (0x26bb0)
  java.lang.ref.Reference$Lock@EBC983C0/EBCCDB20: <unowned>
     Waiting to be notified:
            "Reference Handler" (0x64f68)
Registered Monitor Dump:
  utf8 hash table: <unowned>
  JNI pinning lock: <unowned>
  JNI global reference lock: <unowned>
  BinClass lock: <unowned>
  Class linking lock: <unowned>
  System class loader lock: <unowned>
  Code rewrite lock: <unowned>
  Heap lock: <unowned>
  Monitor cache lock: owner "Signal dispatcher" (0x5e1e8) 1 entry
  Dynamic loading lock: <unowned>
  Monitor IO lock: <unowned>
  User signal monitor: <unowned>
  Child death monitor: <unowned>
  I/O monitor: <unowned>
  Alarm monitor: <unowned>
     Waiting to be notified:
        <unknown thread> (0x2beb8)
  Thread queue lock: owner "Signal dispatcher" (0x5e1e8) 1 entry
  Monitor registry: owner "Signal dispatcher" (0x5e1e8) 1 entry