What you need for this book

The examples provided in this book require that you have a working Scala installation and SBT, the Simple Build Tool, a command line utility for compiling and running Scala code. We will walk you through how to install these in the next sections.

We do not require a specific IDE. The code examples can be written in your favorite text editor or IDE.

Installing the JDK

Scala code is compiled to Java byte code. To run the byte code, you must have the Java Virtual Machine (JVM) installed, which comes as part of a Java Development Kit (JDK). There are several JDK implementations and, for the purpose of this book, it does not matter which one you choose. You may already have a JDK installed on your computer. To check this, enter ...

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