Deletion of entire Double linked list

Doubly Linked List in java - Java2Blog
Simply,
head = null;
tail = null;

will not work in case of Double Linked List. The reason for this is that, we have a previous node too, which will point to the previous node even if we make head=tail=null.

So, the solution for this is that, we loop through the linked list and make all the prev=null (for each node.). Now, after this if we do head=tail=null, the entire linked list is deleted.

Note : The nodes in any linked list is deleted one by one and not vanished all at once by garbage collection.

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