1. which of the nodes in a singly linked list require special handling?

2.what types can Arraylist not hold? how do you deal with this issue?

3. Is Java's LinkedList class implemented using singly-linkedlists or doubly-linked list? tell why you think you answer is correct.

i got the answer for 1. which is head node, and 2 is primitive types but how do we deal with such issues.. i rewrote number 3