Java 23 for Absolute Beginners

Write your first code in Java 23 using simple, step-by-step examples that model real-word objects and events, making learning easy. With this book you will be able to pick up core programming concepts without fuss and write efficient Java code in no time. Clear code descriptions and layout ensure you get your code running as soon as possible. Author Iuliana Cosmina focuses on practical knowledge and getting you up to speed quickly―all the bits and pieces a novice needs to get started programming in Java.

In this edition, you will discover how Java has changed since version 17, and how to design and write code using the most recently introduced Java features such as new collection methods, virtual threads, pattern and record matching in switch expressions, structured concurrency tasks, unnamed classes and instance methods, and many more.

This book is a complete Java guide, covering the following topics: setting up a development environment, programming concepts and well-known programming principles, writing Java code following industry-specific design patterns and coding conventions, executing it, debugging, testing, documenting it and even using specialized tools such as IntelliJ IDEA for writing Java code, Maven for building, JUnit Jupiter for testing, and in-memory and Docker-hosted databases or data storage. After reading this book, you’ll have all the necessary skills and knowledge to pass an interview for a starting Java development position.

What You Will Learn

• Set up a Java development environment
• Use the Java language to write high-quality code
• Understand fundamental programming concepts and algorithms
• Use virtual threads, records, and other Java renown features
• Debug, test, and document Java code
• Improve performance by customizing the Garbage Collector

Who This Book Is For

Those who are new to programming and want to learn Java and use it to build efficient solutions

Table of Contents

1. Chapter 1: An Introduction to Java and Its History

2. Chapter 2: Preparing Your Development Environment

3. Chapter 3: Getting Your Feet Wet

4. Chapter 4: Java Syntax

5. Chapter 5: Data Types

6. Chapter 6: Operators

7. Chapter 7: Controlling the Flow

8. Chapter 8: The Stream API

9. Chapter 9: Debugging, Testing, and Documenting

10. Chapter 10: Making Your Application Interactive

11. Chapter 11: Working with Files

12. Chapter 12: The Publish/Subscribe Framework

13. Chapter 13: Garbage Collection

14. Appendix A: Java Modules

15. Appendix B: IntelliJ IDEA Modules

About the Author

Iuliana Cosmina is currently a software engineer for Cloudsoft, Edinburgh. She has been writing Java code since 2002 and contributed to various types of applications such as experimental search engines, ERPs, track and trace, and banking. During her career, she has been a teacher, a team leader, software architect, DevOps professional, and software manager. She is a Spring-certified Professional, as defined by Pivotal, the makers of Spring Framework, Boot, and other tools, and considers Spring the best Java framework to work with. When she is not programming, she spends her time reading, blogging, learning to play piano, travelling, hiking, or biking.