Need for the $cast task in System Verilog

[javatea]

In reply to Shri Ganesh:

do you check that link??? whats inside?
if you are not able to find the answer.
I highly recommend you take this chance to start.
I am 100% sure you can find it.
if not, I suggest you drop this course.

http://lmgtfy.com/?q=systemverilog+oop