RMI UnmarshalException error

[Kowsi]

I too have the same problem as ChrisMayhew. But i am using Wifi, how overcome this problem in localhost. While running server program (in jdk/bin), i am receiving the following error message...

Exception java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: ArmstrongImp_StubRaised

[Fubarable]

Kowsi, I have moved your post out of this thread: java-rmi-problem since you have a new question. It may be related to the question in the old thread (hence the link) but is a hijack of the old thread. We like to put new questions in their own threads. Thanks for your cooperation and best of luck.

[Kowsi]

Hi, i have attached server program. The problem is server is not connecting to local host...

This is Interface...

import java.rmi.*;

public interface ArmstrongInf extends java.rmi.Remote
{
public boolean isArmstrong(long num)throws java.rmi.RemoteException;
}

This implements interface..
import java.rmi.*;
import java.rmi.server.*;

public class ArmstrongImp extends java.rmi.server.UnicastRemoteObject implements ArmstrongInf
{
public ArmstrongImp() throws java.rmi.RemoteException
{
super();
}
public boolean isArmstrong(long num) throws java.rmi.RemoteException
{
long n=num;
int arm=0,len=(Long.toString(num)).length();
while(n>0)
{
arm+=Math.pow(n%10,len);
n=n/10;
}
if(num==arm)
return true;
else
return false;
}
}

This is Server...

import java.rmi.Naming;
public class ArmstrongServer
{
public ArmstrongServer()
{
try
{
ArmstrongInf Arm = new ArmstrongImp();
Naming.rebind("rmi://localhost:8080/Armstrong",Arm);
}
catch(Exception e){System.out.println("Exception "+e+"Raised");}
}
public static void main(String args[])
{
new ArmstrongServer();
}
}

Its showing unmarshall exception... How to get rid off this...

[Tolls]

What's the full exception including stack trace.

Your catch block only seems to be printing the exception name, which isn't as helpful.

[Kowsi]

I cannt get u... I dont know what you are asking... I dont know much about java... It cannot able to connect the server to local host... I think its due to vista...

[Tolls]

System.out.println("Exception "+e+"Raised")

This tells you next to nothing about the problem.

e.printStackTrace();

this will tell you exactly what exception has occurred and, more importantly, where it occurred.

Always print the stack trace on an exception.

[Kowsi]

i got following error...

java.rmi.ServerException: RemoteException occurred in server thread; nested exce
ption is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested excep
tion is:
java.lang.ClassNotFoundException: ArmstrongImp_Stub
at sun.rmi.server.UnicastServerRef.oldDispatch(Unicas tServerRef.java:396
)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastSe rverRef.java:250)
at sun.rmi.transport.Transport$1.run(Transport.java:1 59)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport. java:155)
at sun.rmi.transport.tcp.TCPTransport.handleMessages( TCPTransport.java:5
35)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandl er.run0(TCPTranspor
t.java:790)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandl er.run(TCPTransport
.java:649)
at java.util.concurrent.ThreadPoolExecutor$Worker.run Task(ThreadPoolExec
utor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor
.java:908)
at java.lang.Thread.run(Thread.java:619)
at sun.rmi.transport.StreamRemoteCall.exceptionReceiv edFromServer(Stream
RemoteCall.java:255)
at sun.rmi.transport.StreamRemoteCall.executeCall(Str eamRemoteCall.java:
233)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:3 59)
at sun.rmi.registry.RegistryImpl_Stub.rebind(Unknown Source)
at java.rmi.Naming.rebind(Naming.java:160)
at ArmstrongServer.<init>(ArmstrongServer.java:10)
at ArmstrongServer.main(ArmstrongServer.java:16)
Caused by: java.rmi.UnmarshalException: error unmarshalling arguments; nested ex
ception is:
java.lang.ClassNotFoundException: ArmstrongImp_Stub
at sun.rmi.registry.RegistryImpl_Skel.dispatch(Unknow n Source)
at sun.rmi.server.UnicastServerRef.oldDispatch(Unicas tServerRef.java:386
)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastSe rverRef.java:250)
at sun.rmi.transport.Transport$1.run(Transport.java:1 59)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport. java:155)
at sun.rmi.transport.tcp.TCPTransport.handleMessages( TCPTransport.java:5
35)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandl er.run0(TCPTranspor
t.java:790)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandl er.run(TCPTransport
.java:649)
at java.util.concurrent.ThreadPoolExecutor$Worker.run Task(ThreadPoolExec
utor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor
.java:908)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.ClassNotFoundException: ArmstrongImp_Stub
at java.net.URLClassLoader$1.run(URLClassLoader.java: 200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.j ava:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:3 07)
at java.lang.ClassLoader.loadClass(ClassLoader.java:2 52)
at java.lang.ClassLoader.loadClassInternal(ClassLoade r.java:320)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandl er.java:434)
at sun.rmi.server.LoaderHandler.loadClass(LoaderHandl er.java:165)
at java.rmi.server.RMIClassLoader$2.loadClass(RMIClas sLoader.java:620)
at java.rmi.server.RMIClassLoader.loadClass(RMIClassL oader.java:247)
at sun.rmi.server.MarshalInputStream.resolveClass(Mar shalInputStream.jav
a:197)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectI nputStream.java:157
5)
at java.io.ObjectInputStream.readClassDesc(ObjectInpu tStream.java:1496)
at java.io.ObjectInputStream.readOrdinaryObject(Objec tInputStream.java:1
732)
at java.io.ObjectInputStream.readObject0(ObjectInputS tream.java:1329)
at java.io.ObjectInputStream.readObject(ObjectInputSt ream.java:351)
... 12 more

[Kowsi]

Ya... I got...


I just changed my url(ie., name that i am binding) in server and client...

instead of localhost i used "127.0.0.1"...