I was trying to run the HelloGui file in the IDE but it asked my for something like an ANT file, and i don't know what that's supposed to mean. But it works just fine in the command prompt. Am I supposed to run all OOP files in the command prompt?

link to screenshot:

https://docs.google.com/document/d/1EiFTCRwgGTkQSg9O0ONwdfUVOOwNm_zhhKB-xwtUVnw/edit?usp=sharing