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Setting Up Your Development Environment

Before we start coding, we need to set up the tools you'll use as a Java developer.

What You'll Need​

1. Code Editor / IDE​

An IDE (Integrated Development Environment) is where you'll write your code. We recommend IntelliJ IDEA Community Edition:

  • Free and open-source
  • Works on Windows, Mac, and Linux
  • Excellent Java support
  • Beginner-friendly with helpful code suggestions

Download: https://www.jetbrains.com/idea/download/

Alternative: Visual Studio Code with Java extensions is also a good option if you prefer a lighter editor.

2. Java Development Kit (JDK)​

The JDK contains everything you need to develop Java applications. We recommend Java 17 or later (LTS version):

Download: https://adoptium.net/ (Eclipse Temurin)

tip

Java 17 is a Long-Term Support (LTS) version, making it a stable choice for learning and production use.

3. Terminal/Command Line​

You'll use the terminal to run programs and commands:

  • Windows: Use PowerShell or Windows Terminal
  • Mac: Use Terminal (comes pre-installed)
  • Linux: Use your distribution's terminal

Verify Installation​

Open your terminal and run:

java --version

You should see something like openjdk 17.0.x.

Also verify the Java compiler:

javac --version

Build Tools​

As you progress, you'll learn about Maven, which helps with:

  • Dependency management (automatically downloading libraries)
  • Project building and compilation
  • Running tests
  • Packaging your application

We'll cover Maven in detail after you write your first program!

Next Steps​

Now that your environment is set up, let's write your first Java program!