Blocks until all tasks have completed execution after a
shutdown request, or the timeout occurs, or the current thread
is interrupted, whichever happens first. Because the {@link
#commonPool()} never terminates until program shutdown, when
applied to the common pool, this method is equivalent to {@link
#awaitQuiescence(long, TimeUnit)} but always returns {@code false}.
@param timeout the maximum time to wait
@param unit the time unit of the timeout argument
@return {@code true} if this executor terminated and
{@code false} if the timeout elapsed before termination
@throws InterruptedException if interrupted while waiting
Blocks until all tasks have completed execution after a shutdown request, or the timeout occurs, or the current thread is interrupted, whichever happens first. Because the {@link #commonPool()} never terminates until program shutdown, when applied to the common pool, this method is equivalent to {@link #awaitQuiescence(long, TimeUnit)} but always returns {@code false}.
@param timeout the maximum time to wait @param unit the time unit of the timeout argument @return {@code true} if this executor terminated and {@code false} if the timeout elapsed before termination @throws InterruptedException if interrupted while waiting