Null pointer exception

[Suhel Ahmed]

Hi People i am getting following nullpointerexception when i trying to deploy entity bean in weblogic 6.1 app server....................any idea whats wrong with my bean.   java.lang.NullPointerException at weblogic.management.internal.MBeanProxy.getAttribute(MBeanProxy.java:234) at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:168) at $Proxy7.isDeployed(Unknown Source) at weblogic.management.mbeans.custom.ApplicationManager.poll(ApplicationManager.java:714) at weblogic.management.mbeans.custom.ApplicationManager.update(ApplicationManager.java:200) at java.lang.reflect.Method.invoke(Native Method) at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMBeanImpl.java:608) at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl.java:592) at weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBeanImpl.java:352) at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1555) at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1523) at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:449) at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:190) at $Proxy5.update(Unknown Source) at weblogic.management.console.webapp._domain.__upload_app._jspService(__upload_app.java:149) at weblogic.servlet.jsp.JspBase.service(JspBase.java:27) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:265) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:200) at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:215) at weblogic.servlet.jsp.PageContextImpl.forward(PageContextImpl.java:112) at weblogic.management.console.actions.ForwardAction.perform(ForwardAction.java:35) at weblogic.management.console.actions.internal.ActionServlet.doAction(ActionServlet.java:167) at weblogic.management.console.actions.internal.ActionServlet.doPost(ActionServlet.java:85) at javax.servlet.http.HttpServlet.service(HttpServlet.java:760) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:265) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:200) at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:2456) at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2039) at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139) at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)