IntelliJ IDEA is a full-featured Integrated Development Environment (IDE) built by JetBrains. It is the most widely used IDE for Java development, offering deep code intelligence, built-in tools, and powerful refactoring capabilities.
Unlike a plain text editor, an IDE combines your code editor, compiler, debugger, version control, and build tools into a single window — making development faster and less error-prone.
💡 Why IntelliJ? IntelliJ IDEA understands your code — it detects errors as you type, suggests fixes, auto-completes intelligently, and lets you refactor safely across your entire codebase.
IntelliJ IDEA comes in two editions. For Java beginners and most backend developers, Community Edition is sufficient.
Best for: Learning Java, backend development, Android.
Best for: Enterprise full-stack development.
⚠️ Students and educators can get IntelliJ IDEA Ultimate for free through the JetBrains Student License program using a university email.
| Component | Minimum | Recommended |
|---|---|---|
| RAM | 2 GB free | 8 GB or more |
| Disk Space | 3.5 GB | SSD with 5+ GB |
| OS | Windows 10, macOS 12, Linux (glibc 2.17+) | Latest stable OS |
| Screen Resolution | 1024 × 768 | 1920 × 1080 |
| JDK | Bundled (no separate install needed) | JDK 21 recommended |
📌 IntelliJ IDEA ships with a bundled JDK for running the IDE itself. You can still configure any external JDK (17, 21, etc.) for your projects.
Visit
https://www.jetbrains.com/idea/download/
and select your operating system (Windows / macOS / Linux).
Click Download under Community Edition (free). The Ultimate edition download starts a 30-day trial.
The file will be named something like
ideaIC-2024.1.4.exe (Windows),
ideaIC-2024.1.4.dmg (macOS), or
ideaIC-2024.1.4.tar.gz (Linux).