java.lang.UnsupportedClassVersionError: burp/StartBurp has been compiled by a more recent version of the Java Runtime (class file version 65.0), this version of the Java Runtime only recognizes class ...

I have the error Exception in thread "main" java.lang.UnsupportedClassVersionError: com/rarchives/ripme/App has been compiled by a more recent version of the Java Runtime (class file version 61.0), ...