Hello Peter,
Thanks for the reply.
I had also search for the particular '1.0.com.sun.codemodel.JConditional' class and found that this class is part of 'METRO 2.0' library added by NetBeans IDE while developing web service application. Also that this library is present at '\WEB-INF\lib\METRO_2.0.jar' . But also the above error occurs.
Can you suggest me what the problem is?