[jboss-dev-forums] [EJB3 Development] - java.lang.NullPointerException in EJB3 from JSP page

Moazzam Munir [https://community.jboss.org/people/mmunir] created the discussion "java.lang.NullPointerException in EJB3 from JSP page" To view the discussion, visit: https://community.jboss.org/message/649905#649905 -------------------------------------------------------------- I am developing my first EJB 3 application using JBOSS 7 as application server in Eclipse. The session bean is deployed successfully on the server but when i try to access it from the JSP page, then i get the java.lang.NullPointerException exception. Following is my code: *Local Interface*: package my.first; import javax.ejb.Local; @Local public interface CalculatorRemote {      public float add(float x, float y);      public float subtract(float x, float y);      public float multiply(float x, float y);      public float division(float x, float y); } *Session bean*: package my.first;     import javax.ejb.LocalBean;     import javax.ejb.Stateless;     @Stateless(name = "CalculatorRemote")     public class CalculatorBean implements CalculatorRemote {         public float add(float x, float y) {             return x + y;         }         public float subtract(float x, float y) {             return x - y;         }         public float multiply(float x, float y) {             return x * y;         }         public float division(float x, float y) {             return x / y;         }     } *JSP Page:*      <%!       private CalculatorRemote calculator = null;       float result=0;       public void jspInit() {       try {       InitialContext ic = new InitialContext();       calculator = (CalculatorRemote) ic       .lookup("CalculatorRemote/Local");       System.out.println("Loaded Calculator Bean");     //CalculatorBean       } catch (Exception ex) {       System.out.println("Error:"+       ex.getMessage());       }       }       public void jspDestroy() {       calculator = null;       }     %> *Server Log File:* 17:17:20,552 INFO  [org.jboss.as.ejb3.deployment.processors.EjbJndiBindingsDeploymentUnitProcessor] (MSC service thread 1-4) JNDI bindings for session bean named CalculatorRemote in deployment unit deployment "EJBsession.jar" are as follows:         java:global/EJBsession/CalculatorRemote!my.first.CalculatorBean         java:app/EJBsession/CalculatorRemote!my.first.CalculatorBean         java:module/CalculatorRemote!my.first.CalculatorBean         java:global/EJBsession/CalculatorRemote!my.first.CalculatorRemote         java:app/EJBsession/CalculatorRemote!my.first.CalculatorRemote         java:module/CalculatorRemote!my.first.CalculatorRemote         ......         ......         ......         17:23:44,105 ERROR [stderr] (http--127.0.0.1-8080-1) java.lang.NullPointerException         17:23:44,105 ERROR [stderr] (http--127.0.0.1-8080-1)    at org.apache.jsp.test_jsp._jspService(test_jsp.java:102)         17:23:44,105 ERROR [stderr] (http--127.0.0.1-8080-1)    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)         17:23:44,105 ERROR [stderr] (http--127.0.0.1-8080-1)    at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)         ......         ......         ...... Please help? -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/649905#649905] Start a new discussion in EJB3 Development at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]