Overview
Classes: Timer, TimerTask, TimerTaskAdapter
Classes
class Timer
A Timer allows to schedule tasks (TimerTask objects) for future execution
in a background thread. 
class TimerTask
A task that can be scheduled for one-time or
repeated execution by a Timer.
class TimerTaskAdapter
This class template simplifies the implementation
of TimerTask objects by allowing a member function
of an object to be called as task.