stop(), suspend() and resume() are the methods used for
thread implementation.
stop() - terminate the thread execution,
Once a thread is stopped, it cannot be restarted with the
start() command, since stop() will terminate the execution
of a thread. Instead you can pause the execution of a
thread with the sleep() method. The thread will sleep for a
certain period of time and then begin executing when the
time limit is reached. But, this is not ideal if the thread
needs to be started when a certain event occurs. In this
case, the suspend() method allows a thread to temporarily
cease executing.
resume() method allows the suspended thread to start again.