Hello there! Today, we will unveil Queues in coding, likening them to a line in a coffee shop or a queue of print requests. Queues in computer science are First-In, First-Out (FIFO) structures. Consider this example: you're at a theme park — the first person in line for the roller coaster gets on first. Today's lesson revolves around this straightforward yet powerful concept. So, let's dive in!

Let's explore the implementation of Queues in Java. An array is ideal for implementing a Queue. Let's define the Queue:

In the Queue class above, the isFull() method checks if our queue is already at maximum capacity.

Enqueue, a fancy term, denotes adding an item to the queue — the item lines up at the rear. Here's how it plays out in our Queue class: