NoClassDefFoundError - external jar file

Question

I am developing a project based on EJB in JDeveloper and I need to import a jar file as an additional library in order of the normal working of the application.

I go to Project Properties/Add library/New, I find the jar file and enter the class and source path and add the library. Next, I start the weblogic server and deploy the project. After that I try to run the application but I see the folloing error: "javax.ejb.EJBException: EJB Exception: ; nested exception is: java.lang.NoClassDefFoundError:".

I have been trying to fix this problem, but I do not know where to configure the settings.

I will be very grateful if you give me some piece of advice! Thank you!

Answer 1

Put the jar ejb.jar in the lib folder which is on classpath as it contains the javax.ejb.EJBException class.

Though you still have to find out what's actually causing the EJBException .