D287 - Running your project while viewing any class in IntelliJ 1. After you have opened your project in IntelliJ, locate the Current File drop down list in the top right-hand corner: 2. Click on the drop-down list and select “Edit Configurations” 3. Select the “Add new..” link: 4. Select the “Application” option: 5. Click on the browse icon to locate your Main class: 6. Wait for it to search and locate your main class, then press the “OK” button. 7. Press the “Apply” and then the “OK” button on the previous page: Completed. Now you should be able to run your project while viewing any class in your project.