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Learn Java with Projects

Learn Java with Projects

By : Dr. Seán Kennedy, Maaike van Putten
4.9 (51)
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Learn Java with Projects

Learn Java with Projects

4.9 (51)
By: Dr. Seán Kennedy, Maaike van Putten

Overview of this book

Learn Java with Projects bridges the gap between introductory Java guides and verbose, theoretical references. This book is crafted to build a strong foundation in Java programming, starting from the Java environment itself. It goes far beyond a superficial review of the topics; it demonstrates, with practical examples, why these fundamentals are crucial for developing a deep understanding of the language. You'll not only learn about classes and objects but also see how these concepts are used in practical scenarios, enhancing your ability to write clean, efficient code. The engaging projects throughout the book provide real-world applications of complex topics, ensuring you can connect theoretical knowledge with practical skills. What makes this book stand out is the expertise of its authors. Seán, a seasoned university lecturer with over 20 years of experience, brings academic rigor and real-world insights, thanks to his work with a prestigious software company. Maaike, a passionate software developer and award-winning trainer, brings hands-on experience and a love for teaching. By the end of this book, you'll not only understand Java's core concepts and the critical advanced ones, but also gain practical experience through projects that mimic real-life challenges.
Table of Contents (22 chapters)
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1
Part 1: Java Fundamentals
9
Part 2: Object-Oriented Programming
15
Part 3: Advanced Topics

Using Java’s built-in methods for arrays

Working with arrays is very common. Usually, for very common things, Java has built-in functionality. We can do many common things we’d like to do with arrays with the use of the methods on the built-in Arrays class.

Built-in Arrays class for working with arrays

The built-in Arrays class is a helper class in the java.util package. It offers many utility methods to help us efficiently work with arrays. We’ll explore some common array manipulation tasks using the Arrays class.

The toString() method

A highly useful operation you may want to perform on an array is to convert it into a String, which can be invaluable for debugging and logging purposes. To achieve this, the Arrays class offers a dedicated method called toString(). It’s important to note that this method is static, allowing us to call it directly on the Arrays class.

import java.util.Arrays;public class ArrayHelperMethods {
   ...

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