Answer 1

In Java, we will be creating a Node class to keep track of our buckets. Think of these as the web pages you've accessed in a browsing session; each page is a node and you can go backward or forward (as long as there is something to go backward or forward to).

Nodes in a doubly linked list need to keep track of both the node ahead of them and the node behind them. So it comes as no surprise to see references to next and previous in the code. If a node does not have a previous node, then it is the head. If it doesn't have a next node, then it is the tail.

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