| Class | Description | 
|---|---|
| Handler | A handler is an entity that publishes messages. | 
| Level | Level defines a set of standard logging levels. | 
| Logger | A Logger is used to log messages. | 
| LogManager | There is one  LogManagerobject in an application. | 
| LogRecord | LogRecord objects are used to pass logging requests between the logging framework and individual log Handlers. |