 <p>In the code specified there is no implementation of com.konylabs.middleware.common.JavaService2 class. JavaService will work if you implement JavaService2 class in your class file and override its invoke meathod.</p> <p>below is the sample:</p> <pre><code>public class &lt;YOUR CLASS NAME&gt; implements JavaService2 { @Override public Object invoke(String serviceId, Object[] arg1, DataControllerRequest arg2, DataControllerResponse arg3) throws Exception { // YOUR LOGIC return result; } </code></pre> <p>}</p>