Queue implementation in java


If you want to practice data structure and algorithm programs, you can go through data structure and algorithm interview questions.

In this post , we will see how to implement Queue using Array in java.
Queue is abstract data type which demonstrates First in first out (FIFO) behavior. We will implement same behavior using Array.
Although java provides implementation for  all abstract data types such as Stack , Queue and LinkedList but it is always good idea to understand basic data structures and implement them yourself.
Please note that Array implementation of Queue is not dynamic in nature.
There are two most important operations of Queue:
enQueue : It is operation when we insert element into the queue.
deQueue : It is operation when we remove element from the queue. Read more at

Java Program to implement Queue using Array:

When you run above program, you will get below output:


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