[SOLVED] Whats the root cause of Log4JLogger' cannot be found or is not useable?

Whats the root cause of Log4JLogger' cannot be found or is not useable?

I have commons-logging.jar (v1.0.4) and log4j-1.2.8.jar in the classpath and getting following run-time error:

Caused by: org.apache.commons.logging.LogConfigurationException: User-specified log class 'org.apache.commons.logging.impl.Log4JLogger' cannot be found or is not useable.
    at org.apache.commons.logging.impl.LogFactoryImpl.discoverLogImplementation(LogFactoryImpl.java:874)
    at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:604)
    at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:336)
    at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:310)
    at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:685)

Solution

This was a classpath problem and we did have another version of log4j in the classpath. Thanks Nathan Ryan !