Hi

I am new to Drools. I am using a maven project to connect to guvnor and
execute the rules.


pom.xml
-----------
 <dependency>
      <groupId>org.drools</groupId>
      <artifactId>drools-compiler</artifactId>
      <version>5.5.0.Final</version>
    </dependency>

Code
-----
 public static void main(String[] args) throws InstantiationException,
                        IllegalAccessException {

       KnowledgeAgent ruleAgent =
KnowledgeAgentFactory.newKnowledgeAgent("/Guvnor.properties");


System.out.println(ruleAgent.getKnowledgeBase().getFactType("org.sample","NumberTest"));

                KnowledgeBase ruleBase = ruleAgent.getKnowledgeBase();


System.out.println(ruleBase.getFactType("org.sample","NumberTest"));

                FactType factType = ruleBase.getFactType("org.sample",
"NumberTest");

                Object obj = factType.newInstance();

                factType.set(obj, "numberone", 2);

                factType.set(obj, "numbertwo", 1);

                StatefulKnowledgeSession workingMemory =
ruleBase.newStatefulKnowledgeSession();

                workingMemory.insert(obj);

                workingMemory.fireAllRules();

                System.out.println(factType.get(obj, "message"));

        }

I am getting the null pointer exception as below:
null
Exception in thread "main" java.lang.NullPointerException
        at com.test.drools.guvnor.App.main(App.java:44)


I know, that many people has raised this issue, can anyone know why it is
causing the issue?
Thanks
Smurfs



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