The error means that you have two copies of log4j.jar loaded into memory at the
same time by two different class loaders. Classes loaded by different class
loaders are incompatible even if the classes are bitwise identical.
Pedro Moreno wrote:
So the error I get at the output is the following:
[java] log4j:ERROR A "org.apache.log4j.ConsoleAppender" object is not
assignable to a "org.apache.log4j.Appender" variable.
[java] log4j:ERROR The class "org.apache.log4j.Appender" was loaded by
[java] log4j:ERROR [25.0] whereas object of type
[java] log4j:ERROR "org.apache.log4j.ConsoleAppender" was loaded by
[sun.misc.launcher$appclassloa...@11b86e7].
[java] log4j:ERROR Could not instantiate appender named "CONSOLE".
[java] log4j:ERROR A "org.apache.log4j.ConsoleAppender" object is not
assignable to a "org.apache.log4j.Appender" variable.
[java] log4j:ERROR The class "org.apache.log4j.Appender" was loaded by
[java] log4j:ERROR [25.0] whereas object of type
[java] log4j:ERROR "org.apache.log4j.ConsoleAppender" was loaded by
[sun.misc.launcher$appclassloa...@11b86e7].
[java] log4j:ERROR Could not instantiate appender named "CONSOLE".
Can anyone help me??
--
Ceki Gülcü
Logback: The reliable, generic, fast and flexible logging framework for Java.
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