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Doubly Linked List in Java

In this article, we'll have a look at a data structure known as a doubly linked list. If you're unfamiliar with linked lists, I highly recommend that you check out this tutorial on linked lists before proceeding.

A doubly linked list (often abbreviated as DLL) is very much like a regular singly linked list (SLL).
Both DLL and SLL contain a pointer to the next node, as well as a data field to represent the actual value stored in the node.

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An Overview of the Priority Queue

The priority queue is a somewhat similar data structure to the queue. The difference lies in how the elements are being processed:

  • A standard queue strictly follows the FIFO (First-In-Last-Out) principle.
  • A priority queue does not follow the FIFO principle.

In a priority queue, the elements are being removed from the queue based on their priority. This translates to the requirement that:

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Learning the Basics: Methods in Java

Learn everything you need to know about methods in Java.

If you’ve used Java at all, chances are you’ve already used a method. Look no further than the public static void main(String[] args) at the beginning of every Java program.