Synchronizing the run(
) method of a Runnable
is completely pointless unless you want to share the Runnable
among multiple threads and you want to sequentialize the execution of those threads. Which is basically a contradiction in terms.
There is in theory another much more complicated scenario in which you might want to synchronize the run()
method, which again involves sharing the Runnable
among multiple threads but also makes use of wait()
and notify()
. I’ve never encountered it in 21+ years of Java.