Book Image

Java 9 Programming By Example

By : Peter Verhas
Book Image

Java 9 Programming By Example

By: Peter Verhas

Overview of this book

This book gets you started with essential software development easily and quickly, guiding you through Java’s different facets. By adopting this approach, you can bridge the gap between learning and doing immediately. You will learn the new features of Java 9 quickly and experience a simple and powerful approach to software development. You will be able to use the Java runtime tools, understand the Java environment, and create Java programs. We then cover more simple examples to build your foundation before diving to some complex data structure problems that will solidify your Java 9 skills. With a special focus on modularity and HTTP 2.0, this book will guide you to get employed as a top notch Java developer. By the end of the book, you will have a firm foundation to continue your journey towards becoming a professional Java developer.
Table of Contents (17 chapters)
Title Page
About the Author
About the Reviewer
Customer Feedback

Understanding the algorithm and language constructs

The algorithm was explained at the start of the chapter. The implementation is in the Sort class inside the sort method, and it is only a few lines:

        int n = names.length; 
        while (n > 1) { 
            for (int j = 0; j < n - 1; j++) { 
                if (names[j].compareTo(names[j + 1]) > 0) { 
                    final String tmp = names[j + 1]; 
                    names[j + 1] = names[j]; 
                    names[j] = tmp; 

The n variable holds the length of the array at the start of the sorting. Arrays in Java always have a property that gives the length and it is called length. When we start the sorting, we will go from the start of the array to the end of it and, as you may recall, the last element, Wilson, will walk up to the last position during this first iteration. Subsequent iterations will be shorter and, therefore, the variable n will be...