exception when invoking create method on entity ejb's home object
I have a simple entity bean. I am able to get the reference to the entity's home object. But when I run create method on entity's home interface, I get the following exception. The create method takes no arguments as the primary key is Auto-Increment field in MYSQL database. Here is the exception. I am using jdeveloper and embedded OC4J as server.
07/06/22 15:51:15 java.lang.NullPointerException
07/06/22 15:51:15 at EmployeeHome_EntityHomeWrapper2.create(EmployeeHome_EntityHomeWrapper2.java:1168)
07/06/22 15:51:15 at com.pd.EmpAddInput.addEmployee(EmpAddInput.java:64)
07/06/22 15:51:15 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
07/06/22 15:51:15 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
07/06/22 15:51:15 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
07/06/22 15:51:15 at java.lang.reflect.Method.invoke(Method.java:585)
07/06/22 15:51:15 at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:146)
07/06/22 15:51:15 at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:92)
07/06/22 15:51:15 at javax.faces.component.UICommand.broadcast(UICommand.java:332)
07/06/22 15:51:15 at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:287)
07/06/22 15:51:15 at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:401)
07/06/22 15:51:15 at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:95)
07/06/22 15:51:15 at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:268)
07/06/22 15:51:15 at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:110)
07/06/22 15:51:15 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:213)
07/06/22 15:51:15 at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:712)
07/06/22 15:51:15 at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:369)
07/06/22 15:51:15 at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:865)
07/06/22 15:51:15 at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:447)
07/06/22 15:51:15 at com.evermind.server.http.HttpRequestHandler.serveOneRequest(HttpRequestHandler.java:215)
07/06/22 15:51:15 at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:117)
07/06/22 15:51:15 at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:110)
07/06/22 15:51:15 at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
07/06/22 15:51:15 at oracle.oc4j.network.ServerSocketAcceptHandler.procClientSocket(ServerSocketAcceptHandler.java:239)
07/06/22 15:51:15 at oracle.oc4j.network.ServerSocketAcceptHandler.access$700(ServerSocketAcceptHandler.java:34)
07/06/22 15:51:15 at oracle.oc4j.network.ServerSocketAcceptHandler$AcceptHandlerHorse.run(ServerSocketAcceptHandler.java:880)
07/06/22 15:51:15 at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
07/06/22 15:51:15 at java.lang.Thread.run(Thread.java:595)
What may be causing this exception.
