Thread

[tom nugent]

Hello,
what's the significance of using "while" loop versus "if" statement in synchronized methods [pertaining to wait() and notify()] running theads? Could someone give me an example of the difference? Thank you.

[bill bozeman]

With an if statement, it won't loop back and check the value again. So if you say something like:

if (someBolValue)
{
    wait();
}
else
{
   doThis();
}

And that was in your run method, if bolValue was true, then it would wait, and then once it was notified it would skip the doThis() part.
Now if you did this with a while loop

while (someBolValue)
{
    wait();
}
doThis();

It would wait until someBolValue became false, then skip wait() and go right into doThis(); Basically, you want to keep checking someBolValue before you doThis() and an if won't keep checking, it will only check once.
Bill

[tom nugent]

thank you, Bill. I understood it now.