| |||
| Home > Controlling runtime messages > About Log4j configuration files | |||
In general, the predefined logging configurations provided by the debugger are sufficient for most debugging tasks. However, if you want finer control then you can specify your own customized logging configuration by creating a log4j configuration file. Log4j is an open source logging system for the Java platform and the debugger currently uses version 1.2.
Log4j uses a hierarchy of logging levels to control messages with each level inheriting all lower levels. The following logging levels are currently supported by the debugger:
DEBUG
INFO
WARN
ERROR
FATAL.
Messages are assigned to a specific logging level and can be redirected to different output locations using one or more of the following log4j components:
Table 1. Log4j Components
| Component | Description |
|---|---|
| Logger | Defines the level of logging. |
| Appender | Defines the output destination. |
| Layout | Defines the message format. |