I have downloaded an open-source project, jEdit version 5.5, but it doesn't have maven or gradle. I would like to analyze it using SonarQube, but if I choose the other alternative besides maven and gradle for the analyze, I get an error that I have java files and I should remove them from the analysis. Do you know how I should address this issue?
jEdit uses Ant. To analyze an ant project, you can use SonarScanner for Ant. (Disclaimer: I've never used it myself)