When I first managed to blink an LED connected to a Raspberry Pi with Java, I was super excited! Controlling physical things with some lines of code is magic! This book includes a lot of info and history about Java itself and how to install it on the Raspberry Pi. Also, a lot of tips and tricks to become or be a better developer. And above all many simple examples on these and even more other topics:

• The magic of Bits and Bytes and solving the confusion of Java signed values with the help of a led number display.
• Beautiful user interfaces made with JavaFX so you can interact with the hardware.
• Pi4J applications to be able to control different types of hardware like LEDs, buttons, displays, led strips, relais boards and more.
• Spring applications so you can interact with your Pi via web interfaces.
• How to set up a queue so you can send and receive messages to and from Arduino boards or other Pi's.
• Interviews with some of my heroes: Karen Mouws (STEM and diversity), Trisha Gee (IntelliJ IDEA), Xiaokai He (Visual Studio Code), Alexander Belokrylov (BellSoft Liberica JDK), Jakob Jenkov (tutorials.jenkov.com), Johan Vos (OpenJFX, JavaFX and GluonHQ), Gerrit Grunwald (JavaFX, TilesFX), Mark Heckler (Spring), Vlad Mihalcea (JPA, Hibernate)
• And a lot of other inspirational ideas and getting started examples, to be able to build your dream do-it-yourself project.

My goal was to collect all the information I which would have been bundled at the time I started my own experiments with Java on the Raspberry Pi. If you are new to Java, you will learn the language bit by bit by following the examples. As an experienced Java programmer, you will learn how you can extend your knowledge and control the world around you with simple and inexpensive components.