IntelliJ IDEA Setup for Java Beginners | Install IDE + Run Hello World (Step-by-Step)
Set up a professional Java development environment using IntelliJ IDEA. In this step-by-step tutorial, you’ll install the IDE, configure your Java Development Kit (JDK), fix common setup errors, and run your first Hello World program.
This guide is designed for beginners who want to move beyond basic text editors and start coding efficiently using a modern IDE.
What You’ll Learn
Why an IDE is more efficient than a text editor
What IntelliJ IDEA is and how it works
How to install IntelliJ IDEA (Windows, macOS, Linux)
Fix the “Cannot find Java / JDK not detected” error
Configure JDK inside IntelliJ IDEA
Create and run your first Java program
Key features that improve coding speed and accuracy
Download & Setup Links
IntelliJ IDEA (Official): https://www.jetbrains.com/idea/download/
Java JDK (Oracle): https://www.oracle.com/java/technolog...
OpenJDK (Eclipse Temurin): https://adoptium.net/
IntelliJ Installation Guide: https://www.jetbrains.com/help/idea/i...
Recommended Setup Order
1. Install Java (JDK)
2. Install IntelliJ IDEA
3. Configure JDK in IDE settings
4. Create your first project
5. Run Hello World
Alternative IDE Options (Optional)
Eclipse IDE: https://www.eclipse.org/downloads/
VS Code (Lightweight editor): https://code.visualstudio.com/
Java Extension Pack (VS Code): https://marketplace.visualstudio.com/...
Fix Common Errors
IntelliJ not detecting JDK: https://www.jetbrains.com/help/idea/s...
Set JAVA_HOME correctly: https://www.baeldung.com/java-home-on...
Java not recognized issue: https://www.javatpoint.com/how-to-set...
Next Steps
Learn Java syntax and structure
Understand Object-Oriented Programming (OOP)
Build small Java projects for practice
Practice Java coding: https://www.hackerrank.com/domains/java
Free Java course: https://www.codecademy.com/learn/lear...
Recommended Video Sequence (Watch Next)
Java Basics (WORA, JVM explained)
Java Installation (JDK + JAVA_HOME setup)
IntelliJ Setup (this video)
Timestamps
00:00 – Why not use a text editor?
00:10 – IDE vs Text Editor
00:32 – What is an IDE?
00:56 – Core components: Editor, Build Tools, Debugger
01:17 – Choosing your IDE
01:36 – Top Java IDEs overview
01:50 – Installing IntelliJ IDEA
02:09 – Common error: IDE can’t find Java
02:27 – Fix: Configure JDK path
02:41 – Create Hello World project
03:17 – Run your first Java program
03:54 – Try it yourself
04:53 – Why IDEs improve productivity
05:36 – What to build next
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