If you are using JavaLoader to load external Java classes in ColdFusion, please be sure you are aware of the possible impact on server memory. From the JavaLoader documentation:
Due to the way classes are cached in ColdFusion, URLClassLoaders will not to be garbage collected. It is advised that instances of JavaLoader are stored in the Server scope, so that they never time out, and thus avoid this memory leak.
It should also be noted, that during development time (i.e. when recreating JavaLoader for new changes to take effect), there will be a leak into the PermGen memory space, so it may be required to restart ColdFusion occasionally to clear it. This will not be something that will effect a production application, as if JavaLoader is stored in the Server scope, it will never be removed.
For more on this topic please see this post, Using a Java URLClassLoader in CFMX Can Cause a Memory Leak, as well as the JavaLoader documentation on this subject, JavaLoader 1.0 Beta 2.