Hi Joleen, You may already know most of this, but just in case:
Inside or outside of tomcat, if you have two classes in the same classpath, both with the same class name and package name, it's often hit-or-miss which one will get picked. Weird things happen. And different weird things happen with different flavours of JVM or the same JVM make on different platforms. Evaluate your dependencies and eliminate the duplicates. This is often wickedly difficult to do manually. There are several different dependency management tools you can use-- Maven is my choice, but there are others like Ivy and Gradle. Sometimes they build and manage dependencies. Other times they just manage dependencies. If you need to have multiple versions of the same class inside your JVM, rolling them up using OSGi is a (very complicated but effective, IMO) way to handle that. hope this helps! CG On Fri, Mar 4, 2016 at 9:05 AM, Joleen Barker <oldenuf2no...@gmail.com> wrote: > I saw there is log4j-1.2.8-1.jar and log4j-1.2.17.jar in the WEB-INF/lib > directory for a web application and I wonder what happens if there are two > in the same library. > > Thank you, > > -Joleen >
