Write code that's clean, concise, and to the point: code that others will read with pleasure and reuse. Comparing your code to that of expert programmers is a great way to improve your coding skills. Get hands-on advice to level up your coding style through small and understandable examples that compare flawed code to an improved solution. Discover handy tips and tricks, as well as common bugs an experienced Java programmer needs to know. Make your way from a Java novice to a master craftsman.

This book is a useful companion for anyone learning to write clean Java code. The authors introduce you to the fundamentals of becoming a software craftsman, by comparing pieces of problematic code with an improved version, to help you to develop a sense for clean code. This unique before-and-after approach teaches you to create clean Java code.

Learn to keep your booleans in check, dodge formatting bugs, get rid of magic numbers, and use the right style of iteration. Write informative comments when needed, but avoid them when they are not. Improve the understandability of your code for others by following conventions and naming your objects accurately. Make your programs more robust with intelligent exception handling and learn to assert that everything works as expected using JUnit5 as your testing framework. Impress your peers with an elegant functional programming style and clear-cut object-oriented class design.

Writing excellent code isn't just about implementing the functionality. It's about the small important details that make your code more readable, maintainable, flexible, robust, and faster. Java by Comparison teaches you to spot these details and trains you to become a better programmer.

What You Need:

You need a Java 8 compiler, a text editor, and a fresh mind. That's it.

About the Author

Dr. Simon Harrer is a developer and teacher who's always looking out for new technologies, frameworks, and ideas. His friends call him a clean code evangelist, but in a good way.

Dr. J�rg Lenhard is a developer, teacher, and researcher. He has been teaching programming in Java for almost a decade and enjoys contributing to open source software. J�rg has a track record of computer science research and experience as a professional software developer.

Linus Dietz is a researcher at the Technical University of Munich. His passion lies in developing elegant algorithms and advancing open source software.

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