Weblogic Classloading: How to do Child classloading first?

How to do Child (application) first classloading in weblogic?

Answer: specify the following in weblogic.xml  and package the file into your application ear file.

  xml version="1.0" ?>

     <container-descriptor>

         <prefer-web-inf-classes>true</prefer-web-inf-classes>

  </container-descriptor>

This could help solving the   NoClassDefFoundError exception.

Suggest to read more on classloading issues here:http://javarevisited.blogspot.ca/2011/06/noclassdeffounderror-exception-in.html

One explanation for NoCleassDefFoundError and when Child loading first can resolve it: Maybe your class depends on another class which is on both parent and you application, but different version.

Refer to the following link on weblogic classloading:

http://docs.oracle.com/cd/E11035_01/wls100/programming/classloading.html