66      * @params slot  the slot in the shutdown hook array, whose element
  67      *               will be invoked in order during shutdown
  68      * @params registerShutdownInProgress true to allow the hook
  69      *               to be registered even if the shutdown is in progress.
  70      * @params hook  the hook to be registered
  71      *
  72      * @throw IllegalStateException if shutdown is in progress and
  73      *          the slot is not valid to register.
  74      */
  75     void registerShutdownHook(int slot, boolean registerShutdownInProgress, Runnable hook);
  76 
  77     /**
  78      * Returns the number of stack frames represented by the given throwable.
  79      */
  80     int getStackTraceDepth(Throwable t);
  81 
  82     /**
  83      * Returns the ith StackTraceElement for the given throwable.
  84      */
  85     StackTraceElement getStackTraceElement(Throwable t, int i);





  86 }

  66      * @params slot  the slot in the shutdown hook array, whose element
  67      *               will be invoked in order during shutdown
  68      * @params registerShutdownInProgress true to allow the hook
  69      *               to be registered even if the shutdown is in progress.
  70      * @params hook  the hook to be registered
  71      *
  72      * @throw IllegalStateException if shutdown is in progress and
  73      *          the slot is not valid to register.
  74      */
  75     void registerShutdownHook(int slot, boolean registerShutdownInProgress, Runnable hook);
  76 
  77     /**
  78      * Returns the number of stack frames represented by the given throwable.
  79      */
  80     int getStackTraceDepth(Throwable t);
  81 
  82     /**
  83      * Returns the ith StackTraceElement for the given throwable.
  84      */
  85     StackTraceElement getStackTraceElement(Throwable t, int i);
  86 
  87     /**
  88      * Returns the murmur hash value for the specified String.
  89      */
  90     int getStringHash32(String string);
  91 }