Thanks Mark for answering my query.

Now I have set all the jars file in the classpath, but still m getting the same exception.
The exception is caused by : Null pointer exception.
I am not able to understand why it is giving me this exception, while in the mailing list I didn't found anybody having this
problem.
         
This is my code snippet :

 KnowledgeBuilderConfiguration config =  KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration();
 config.setProperty("drools.dialect.java.compiler", "ECLIPSE");
 KnowledgeBuilder kbuilder =KnowledgeBuilderFactory.newKnowledgeBuilder( config );

        //KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
        kbuilder.add(ResourceFactory.newClassPathResource("shopingdiscount.drl"), ResourceType.DRL);

Am I missing anything that is to initialized , so that I can get through this Null Pointer Exception.

Please help me to through of this situation. I am stuck in this.

Thanks & Regards
Pardeep Ruhil

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