Sorry in advance if this has been asked before, I did some quick searching and could not find a successful search recipe. Anyway, I have a jar library that includes a dependency for a jar that CF includes, but a later version. This jar requires slf4f-api version 1.7.36, but CF includes an earlier version 1.7.12. I would prefer my dependency "somehow" be self-contained and not impact CF using .12 version that CF includes and uses. Is this possible?

I believe Mark Mandels Java Loader has been the most reliable cross platform way to work around that issue.

Thanks. I stopped using javaloader after CF included native support. I'll give it a try and see if it helps.

Did you just try the

javaSettings

thing in Application.cfc and check whether it just does what you need out of the box?

if you are on Lucee you can try wrapping your JAR into an OSGi Bundle to isolate its runtime. There are many helpers to do that, I even wrote one some time ago on ForgeBox. If you are on Adobe then you might be in a tight spot; the JavaLoader by Mark might work there.

I did start with the native javasettings. I tried both loadColdFusionClassPath=false and true - different error messages but both failed. Moving on to the javaloader now...

Cool, just checking.

Hmmm. I did get a little farther with the native JavaSettings. I found the sample code I am using had defined "StringDeserializer.class.getName()", where "StringDeserializer.getClass().getName()" seems to work better. Now the errors are: loadColdFusionClassPath = false: "Invalid value org.apache.kafka.common.serialization.StringDeserializer for configuration key.deserializer: Class org.apache.kafka.common.serialization.StringDeserializer could not be found." vs. loadColdFusionClassPath = true: "loader constraint violation: when resolving method "org.slf4j.impl.StaticLoggerBinder.getLoggerFactory()Lorg/slf4j/ILoggerFactory;" the class loader coldfusion.runtime.java.JavaDynamicClassLoader @18815a8b (instance of coldfusion.runtime.java.JavaDynamicClassLoader, child of coldfusion.bootstrap.BootstrapClassLoader @695c938d coldfusion.bootstrap.BootstrapClassLoader) of the current class, org/slf4j/LoggerFactory, and the class loader coldfusion.bootstrap.BootstrapClassLoader @695c938d (instance of coldfusion.bootstrap.BootstrapClassLoader, child of org.apache.catalina.loader.ParallelWebappClassLoader @2b5f4d54 org.apache.catalina.loader.ParallelWebappClassLoader) for the method's defining class, org/slf4j/impl/StaticLoggerBinder, have different Class objects for the type org/slf4j/ILoggerFactory used in the signature" I'm still experimenting...