Runtime error with AviceBean from HFE

[Veena Pointi]

When I run client program I am getting the following error
java.lang.ClassCastException
at com.sun.corba.se.internal.javax.rmi.PortableRemoteObject.narrow(Porta
bleRemoteObject.java:293)
at javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:134)
at AdviceClient.go(AdviceClient.java:18)
at AdviceClient.main(AdviceClient.java:10)
I have included AdviceAppClient.jar in classpath so I am running AdviceClient program using following command line
java AdviceClient
What might me the problem?
Thanks
Veena

[Sudhir V]

Please redeploy the bean. It seems there's a naming conflict. See the link below
https://coderanch.com/forums/
Attach your AdviceClient code with the post.

[Veena Pointi]

Thanks.Here is my AdviceClient code

import javax.naming.*;
import java.rmi.*;
import javax.rmi.*;
import headfirst.*;
import javax.ejb.*;
public class AdviceClient {
public static void main(String[] args){
new AdviceClient().go();
}
public void go(){
try{
Context ic=new InitialContext();
Object o=ic.lookup("Advisor");
AdviceHome home=(AdviceHome) PortableRemoteObject.narrow(o,AdviceHome.class);
Advice advisor=home.create();
System.out.println(advisor.getMessage());
}catch(Exception ex){
ex.printStackTrace();
}
}
}

Mistake I did was I named AdviceBean as Adviser ,was calling Advisor in client programme.So I undeployed Bean,gave JNDI name as Advisor and run client code again.But I keep getting this exception.
Thanks again
Veena

[Veena Pointi]

Can somebody tell me if they have faced same problem?I undeployed and redeployed again.But still not working.
Thanks
Veena

[manishguptaonweb Gupta]

Got the same error, not debugged yet, hope to find the clue about it in chapter 3(Client view).

[Sudhir V]

See its pretty obvious that the error is in this line
AdviceHome home=(AdviceHome)PortableRemoteObject.narrow(o,AdviceHome.class)
The cast operation ((AdviceHome)) is throwing error means that something which is beng returned from PortableRemoteObject.narrow(o,AdviceHome.class)
is not castable.
So the error narrows down to "PortableRemoteObject.narrow(o,AdviceHome.class)"
the container is able to recognize the PortableRemoteObject function but probably its not narrowing it down to an object which is castable. Most likely the error is with AdviceHome.class or the container is not able to find this class. Please make sure that classpath for the jar file is set right. Instead of setting the classpath permanently specify the path at runtime using java -cp.
Please check your other classpaths using this link
http://www.oreilly.com/catalog/hfjejb/errata/hfjejb.help
and compile using "javac -cp" and run using "java -cp"

[Veena Pointi]

I tried to print the object "o" which is result of narrowing.
System.out.println("lookup object: "+ o) gives
lookup object: com.sun.corba.ee.internal.iiop.CDRInputStream_1_0$1:IOR:00000000000002a524d493a6865616466697273742e416476696365486f6d653a303030303030303030303003030303000000000000001000000000000015c000102
It has long binar digits at the end which I have truncated
Thanks
Veena
[ February 08, 2004: Message edited by: Veena Point ]

[Veena Pointi]

Originally posted by Sudhir Vallam:
likely the error is with AdviceHome.class or the container is not able to find this class. Please make sure that classpath for the jar file is set right. Instead of setting the classpath permanently specify the path at runtime using java -cp.

Classpath for jar jar file is set right.I checked it.When I run using
java -cp {$CLASSPATH}:AdviceAppClient.jar AdviceClient command I get the following error
Exception in thread "main" java.lang.NoClassDefFoundError: ex
Everything is fine.But still not working.
Veena

[manishguptaonweb Gupta]

I am getting an error in the last line of the code for the client(System.out.println(advisor.getAdvice()) . Any clues, it is giving the error( headfirst._Advice_Stub.getAdvice(Unknown Source)).
The whole stack trace is below.
java.rmi.RemoteException: CORBA BAD_OPERATION 0 No; nested exception is:
org.omg.CORBA.BAD_OPERATION: vmcid: 0x0 minor code: 0 completed: No
at com.sun.corba.ee.internal.iiop.ShutdownUtilDelegate.mapSystemExceptio
n(ShutdownUtilDelegate.java:137)
at javax.rmi.CORBA.Util.mapSystemException(Util.java:65)
at headfirst._Advice_Stub.getAdvice(Unknown Source)
at AdviceClient.go(AdviceClient.java:22)
at AdviceClient.main(AdviceClient.java:9)
Caused by: org.omg.CORBA.BAD_OPERATION: vmcid: 0x0 minor code: 0 completed:
No
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstruct
orAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingC
onstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:274)
at java.lang.Class.newInstance0(Class.java:306)
at java.lang.Class.newInstance(Class.java:259)
at com.sun.corba.ee.internal.iiop.messages.ReplyMessage_1_2.getSystemExc
eption(ReplyMessage_1_2.java:93)
at com.sun.corba.ee.internal.iiop.ClientResponseImpl.getSystemException(
ClientResponseImpl.java:108)
at com.sun.corba.ee.internal.POA.GenericPOAClientSC.invoke(GenericPOACli
entSC.java:132)
at org.omg.CORBA.portable.ObjectImpl._invoke(ObjectImpl.java:457)
at headfirst._Advice_Stub.getAdvice(Unknown Source)