Why we use upcasting in java ??

Answer 1

Upcasting is done automatically by Java.

Answer 2

can you elaborate why we use it ??

Answer 3

You mean why does Java do it automatically or why there’s a need for Java to do it?

Answer 4

Yes,my question is why we use or need upcasting in Java ??

we have also used upcasting in polymorphism ,,,,, why we have used it ??

Answer 5

This link will explain it better than I ever will: http://www.cs.utexas.edu/~cannata/cs345/Class%20Notes/14%20Java%20Upcasting%20Downcasting.htm