wish helps you Problem solved. Rookie mistake. I inadvertently left the old jt400 jar files in the lib folder on the Apache Tomcat 8 server by renaming them. Once I deleted the old jar files my issues were solved with the new jt400 jar that I installed last week that started the conflict to begin with. !
hop of those help? I figured out the issue was caused by the tomcat server which i configured for this project, I removed the server from the project and now able to run the project as java application without any issues.