`LEVEL` `java.util.logging.Level` `org.apache.log4j.Level` 9 (off) (off) 8 n/a `FATAL` 7 `SEVERE` `ERROR` 6 `WARNING` `WARN` 5 `INFO` `INFO` 4 `CONFIG` n/a 3 `FINE` `DEBUG` 2 `FINER` `TRACE` 1 `FINEST` `ALL`