Before looking at ch11-ex1 java source codes, PONDER these issues:
wait() is the key method beneath the Timer system. Understand wait()
and u understand much of Timer.
A: container of the schedule() method
A: the runnable container of the run() method
Q: which class maintains the schedule and the job @@ see Timer api
Q: which thread executes the jobs in queue@@ timerTask, being a
runnable thread@@. See Timer api
Q: how do u list the jobs in queue@@
Q: basic functionalities embodied by timerTask@@
run() containing the actions to take.
the schedule, perhaps a specification of the next kickoff time.
Q: which class is runnable@@ Which class has a run() method@@
Q: which class has methods to SET the number of seconds for delay@@