Java, A Beginner's Guide, 5th Edition, 5th Edition

Try This 8-1 Creating a Queue Interface

To see the power of interfaces in action, we will look at a practical example. In earlier chapters, you developed a class called Queue that implemented a simple fixed-size queue for characters. However, there are many ways to implement a queue. For example, the queue can be of a fixed size or it can be “growable.” The queue can be linear, in which case it can be used up, or it can be circular, in which case elements can be put in as long as elements are being taken off. The queue can also be held in an array, a linked list, a binary tree, and so on. No matter how the queue is implemented, the interface to ...