The description of the MonitorWaitEvent is:

  Notification that a thread in the target VM is about to wait on a monitor object
  That is, a thread is entering Object.wait().

The second sentence is confusing because it is unclear if the thread has actually entered Object.wait() and more confusingly which of the "wait" methods on Object. Note that one wait method may call another.

The second sentence of the MonitorWaitedEvent description is confusing in the same way.