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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

Understanding Java’s primitive data types

Java provides eight in-built data types. In-built means that these data types come with the language. These primitive data types are the topic of this section.

Java’s primitive data types

All of the primitive data types are named using lowercase letters only; for example, int and double. When we create our own data types later on, namely classes, records, and interfaces, we will follow a different naming convention. For example, we may have a class named Person or Cat. This is simply a widely adopted coding convention and the compiler does not distinguish between naming conventions. However, it is very easy to recognize any of the primitive data types as they are always in lowercase letters only. Before we discuss the primitive data types themselves, there are a few important points to make.

Numeric primitive data types are signed

In Java, all numeric primitive data types are represented as a series of bits. In addition...

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