Error Msg: RemoteException occurred in server thread; nested exception is:

Question

Hi Everyone,
I got the above msg and does anyone has any idea what could be the root of the problem? Attached below is extraction from the server log file.
Thanks,
Kelvin
Server Log
[#|2005-09-28T23:28:59.836+0800|INFO|sun-appserver-pe8.1_01|javax.enterprise.system.container.ejb|_ThreadID=21;|EJB5018: An exception was thrown during an ejb invocation on [SupplierTableFacadeBean]|#]
[#|2005-09-28T23:28:59.836+0800|INFO|sun-appserver-pe8.1_01|javax.enterprise.system.container.ejb|_ThreadID=21;|
javax.ejb.EJBException
     at com.sun.ejb.containers.BaseContainer.processSystemException(BaseContainer.java:2807)
     at com.sun.ejb.containers.BaseContainer.completeNewTx(BaseContainer.java:2713)
     at com.sun.ejb.containers.BaseContainer.postInvokeTx(BaseContainer.java:2521)
     at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:819)
     at com.sun.ejb.containers.EJBObjectInvocationHandler.invoke(EJBObjectInvocationHandler.java:137)
     at $Proxy89.createSupplier(Unknown Source)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:324)
     at com.sun.corba.ee.impl.presentation.rmi.StubInvocationHandlerImpl.invoke(StubInvocationHandlerImpl.java:167)
     at com.sun.corba.ee.impl.presentation.rmi.bcel.BCELStubBase.invoke(Unknown Source)
     at supplier._SupplierTableFacadeRemote_DynamicStub.createSupplier(_SupplierTableFacadeRemote_DynamicStub.java)
     at org.apache.jsp.process.supplier.addsupplier_005fprocess_jsp._jspService(addsupplier_005fprocess_jsp.java:141)
     at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:105)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
     at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:336)
     at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
     at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:251)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:324)
     at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:249)
     at java.security.AccessController.doPrivileged(Native Method)
     at javax.security.auth.Subject.doAsPrivileged(Subject.java:500)
     at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:282)
     at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:165)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:257)
     at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
     at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:161)
     at java.security.AccessController.doPrivileged(Native Method)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:263)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:225)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:173)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:132)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:551)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:933)
     at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:184)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:653)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:534)
     at com.sun.enterprise.web.connector.grizzly.ProcessorTask.doTask(ProcessorTask.java:403)
     at com.sun.enterprise.web.connector.grizzly.WorkerThread.run(WorkerThread.java:55)
Caused by: java.lang.NullPointerException
     at supplier.SupplierTableFacadeBean.createSupplier(SupplierTableFacadeBean.java:89)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:324)
     at com.sun.enterprise.security.SecurityUtil$2.run(SecurityUtil.java:153)
     at java.security.AccessController.doPrivileged(Native Method)
     at com.sun.enterprise.security.application.EJBSecurityManager.doAsPrivileged(EJBSecurityManager.java:950)
     at com.sun.enterprise.security.SecurityUtil.invoke(SecurityUtil.java:158)
     at com.sun.ejb.containers.EJBObjectInvocationHandler.invoke(EJBObjectInvocationHandler.java:128)
     ... 44 more
|#]
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Answer 1

I have attached my createSupplier method from the session bean. I hope it helps in finding the problem
Regards,
Kelvin
public String createSupplier(String supid, String password, String name, String address,String contactno, String faxno, String email, String kcpersonnal, String kcpdesignation, String cpcno, String industry, String natureofbiz, String paidupcapital, String preferredcontract, Integer creditrating, String others) throws FinderException, UserException{
SupplierTableLocal supplierTable = null;
String key;
boolean ok;
//Checking for the minimum creation values.
if ( supid.equals("") || password.equals("") || name.equals("")|| address.equals("")|| contactno.equals("") || faxno.equals("")|| email.equals("")|| kcpersonnal.equals("") || kcpdesignation.equals("")|| cpcno.equals("")|| industry.equals("")|| natureofbiz.equals("")||paidupcapital.equals("")) {
throw new UserException("Please enter the userid, password, name, address, contactno, faxno, email, kcpersonnel, kcpdesignation, cpcno, industry, natureofbiz, paidupcapital.");
//Checks if supplierid is unique.
else{
Collection list = supplierHome.findBySupid(supid);
if( (list.size() != 0) ) {
throw new UserException("SupplierID already exists.");
//If SupplierID chosen is unique
else {
do{
key = supid;
//Check if the Primary Key has already been taken
try{
supplierTable = supplierHome.findByPrimaryKey(key);
ok = true;
catch (javax.ejb.FinderException ex) {
ok = false;
} while (ok);
try{
supplierTable = supplierHome.create(supid, password, name, address, contactno, faxno, email, kcpersonnal, kcpdesignation, cpcno, industry, natureofbiz, paidupcapital, preferredcontract, creditrating, others);
catch (javax.ejb.CreateException e){
return null;
return key;
}