stop(), suspend(), resume() methods are deprecated in the 
jdk1.2

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.

stop(),suspend() resume() methods are deprecated used for 
inter thread communication
stop will stop the exceution of thread
suspend will temporarily suspends the thread execution
resume will invoke the suspended threads for execution