NoSuchMethodError for ReflectionHelper during app launch

[Garvesh Mehrotra]

Hi,

I am trying to launch my Java based app to Google App Engine.
Every time the launch fails with following error.
java.lang.NoSuchMethodError: com.sun.jersey.core.reflection.ReflectionHelper.getOsgiRegistryInstance()Lcom/sun/jersey/core/osgi/OsgiRegistry;

Though I have added jersey-core-1.17.1.jar in the build path, which contains the above mentioned method. I tried rearranging the JARs through Order and Export in eclipse, but to no avail.
Any help is appreciated.

Thanks
Garvesh

[Adam (Cloud Platform Support)]

This seems like a question that would be better posted to Stack Overflow, rather than a discussion post. The google-appengine group is intended more for general discussion rather than 1-on-1 support assistance. Please see the main Community Support page for a list of the tags we monitor. This type of question seems to have been asked a few times here, here and here, so one of these answers may be of help. Specifically:

"Most of the issues of kind 'java.lang.NoSuchMethodError' occur when there is a library compatibility issue. So you might have jersey-core and jersey-server library version mismatch. You need to check and make sure you have both libraries compatible with each other."

[Garvesh Mehrotra]

Thanks Adam.
Sorry for posting my query here.