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How to Install and Set Up IntelliJ IDEA 🚀

IntelliJ IDEA is one of the best IDEs (Integrated Development Environments) for Java development. Here’s a step-by-step guide to downloading, installing, and setting it up.

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1. Download IntelliJ IDEA

1. Open a web browser and go to the official JetBrains website:
   👉 https://www.jetbrains.com/idea/download
2. You’ll see two versions available:
   • Ultimate (Paid, for professional development)
   • Community (Free, for basic development)
   • ✅ If you're just starting, the Community Edition is recommended.
3. Click the Download button under "Community Edition."

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2. Install IntelliJ IDEA

1. Open the downloaded installer file.

2. Follow the installation wizard:

   • Windows:

     • Click Next until you reach the "Choose Components" screen.
     • Select:
       • ✅ "64-bit launcher" (if applicable)
       • ✅ "Add launchers dir to PATH" (optional but useful)
     • Click Next, choose the installation folder, and then click Install.

   • Mac:

     • Drag the IntelliJ IDEA app into the "Applications" folder.

   • Linux:

     • Extract the downloaded .tar.gz file.
     • Run the idea.sh script from the extracted folder.

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3. First-Time Setup

1. Launch IntelliJ IDEA after installation.
2. Choose a theme (Light or Dark) and click Next.
3. Select necessary plugins:
   • Keep defaults for now; plugins can be installed later.
4. Click Start using IntelliJ IDEA.

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4. Set Up a Java Development Environment

If you’ll be coding in Java, you need the Java Development Kit (JDK).

1. Install JDK:

• Go to 👉 https://adoptium.net/
• Download and install the latest LTS (Long-Term Support) version.

2. Configure JDK in IntelliJ IDEA:

• Open IntelliJ IDEA.
• Go to File > Project Structure > SDKs.
• Click ➕ and select the installed JDK folder.

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5. Create a New Project

1. Click New Project.
2. Choose Java (or another language if needed).
3. Select the JDK (install one if needed).
4. Click Create to start coding!

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6. Run a Simple Java Program (Optional)

1. Create a new Java Class (Main.java).

2. Write this basic program:

   public class Main {
       public static void main(String[] args) {
           System.out.println("Hello, IntelliJ!");
       }
   }

3. Click Run ▶️ to execute it.

✅ Congratulations! You’ve successfully installed and set up IntelliJ IDEA! 🎉