Why do you need (LinkedList)?

Question

So I have this one line of code here:

LinkedList<Integer> p = (LinkedList) obj.c.clone();

I was wondering why do you need the (LinkedList) part before obj.c.clone()?

Answer 1

The answer is: You need type casting to get access to target class methods and fields.

Object and LinkedList is same type hierarchy, so you can cast, otherwise You would get ClassCastException in Java. For more information about type casting, See this link.