Hi Sanjeev,
See the code below:
Try to run this, with Line1 and Line 2 and without Line 1 and Line 2.
Without Line 1 - Line 2, the output is indeterministic but with wait(), the output is surely "sum = 55".
with wait, main waits for
thread ww to notify it before it could print the
result.
See the book for more detail!
Regards,
cmbhatt