Wait, Notify and Exceptions

[kgw0news]

Since wait can already throw an exception,
why not allow notify to pass one to be taken at the wait if any?

Right now if I have a thread waiting for an event to complete, I have
to set some state info
that the thread must check after the wait to decide if the event
succeeded.

 

[Gordon Beaton]

Since wait can already throw an exception, why not allow notify to
pass one to be taken at the wait if any?

Right now if I have a thread waiting for an event to complete, I
have to set some state info that the thread must check after the
wait to decide if the event succeeded.

Consider what will happen if the event occurs before you reach wait().

You need that state check regardless, and in a loop:

synchronized (o) {
while (!eventHasFired()) {
o.wait();
}
}

/gordon