| Value | Meaning |
|---|---|
| TRACELevel(10, "TRACE") | The lowest severity log level defined by SLF4D, usually for fine-grained debugging of individual statements and control flow. |
| DEBUGLevel(20, "DEBUG") | A low severity log level used for extra information that's only useful when debugging a program's behavior. |
| INFOLevel(30, "INFO") | A medium severity log level used for reporting information during standard, nominal program operation. |
| WARNLevel(40, "WARN") | A higher severity log level for reporting anomalous but non-fatal issues that arise at runtime. |
| ERRORLevel(50, "ERROR") | A severe log level for program errors that indicate a fatal bug that leads to program failure or inconsistent state. |
The set of pre-defined logging levels that are universally recognized.