Step 5: Run Configuration

• The Run Configuration in IntelliJ IDEA allows you to define how your application should be executed, debugged, and deployed.
• When working with a web server like Apache Tomcat, setting up a proper run configuration is crucial for testing and development.
• Here’s a detailed step-by-step guide:

1. Open Run Configurations:
   • In IntelliJ IDEA, go to Run > Edit Configurations....
2. Add New Configuration:
   • Click the + icon (usually in the top-left).
   • Choose Tomcat Server > Local.
3. Name the Configuration:
   • Give it a name (e.g., “MyTomcat”).
4. Configure the Server:
   • In the “Server” tab:
     • Make sure the “Application Server” field shows your Apache Tomcat installation. If it’s not there, click “Configure…” and point to your Tomcat folder (where you extracted the Tomcat zip file).
5. Deployment Settings:
   • Go to the “Deployment” tab.
   • Click the + icon.
   • Choose “Artifact…” and select your-project-name:war exploded. This means IntelliJ IDEA will deploy your web app directly from the project files.
   • Application Context:
     • Set the “Application context”. For example, /MyWebApp means you’ll access your app in the browser at http://localhost:8080/MyWebApp.
6. Save and Run:
   • Click “Apply” and then “OK”.
   • Select your new configuration from the dropdown menu near the green “Run” button.
   • Click the green “Run” button (or press Shift + F10) to start Tomcat.

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