14 Logs

Oracle Java ME SDK uses the log4j logging facility to manage Device Manager and Device Instance logs.

Logging levels are configurable.

14.1 Device Manager Logs

The device manager log is placed into:

username\javame-sdk\3.3\log\device-manager.log

You can configure logging levels in the following XML file:

installdir\toolkit-lib\process\device-manager\conf\log4j.xml

A priority value for the categories com.sun or VM can be set to the following levels: FATAL, ERROR, WARN, INFO, DEBUG, TRACE (ordered from least to most verbose).

Example 14-1 Setting a Category Value

<category name="com.sun">
   <priority value="DEBUG"/>
   <appender-ref ref="CONSOLE-ALL"/>
   <appender-ref ref="FILE"/>
</category>
   
<category name="VM">
   <priority value="INFO"/>
   <appender-ref ref="CONSOLE-ALL"/>
   <appender-ref ref="FILE"/>
</category>

14.2 Device Instance Logs

Each device (or emulator) instance writes its own log in to its directory.

username\javame-sdk\3.3\work\devicename\device.log

log4j.xml controls the verbosity of the device instance logs, as described in "Device Manager Logs."