Since version 2.0.0 Log4E is free now!
Log4E is a free Eclipse Plugin which helps you to use your logger easily in Java Projects.
The Plugin Log4E is not bound to any special logging framework. Thus you might be able to adapt to your own logger by defining your own templates using the preferences. It has active support for Log4j, Log4j 2, SLF4J, Commons Logging and JDK 1.4 logging.