Jeg gør følgende:

  1) Starter rmiregistry: 
       start rmiregistry 2001

  2) Start Server:
C:\eclipse-SDK-3.2-win32\workspace\RMISamples\src>tree /f /a
Mappetræ for diskenheden IBM_PRELOAD
Diskenhedens serienummer er 348B-FB89
C:.
\---example
    \---hello
            Client.java
            Hello.java
            Server.java


C:\eclipse-SDK-3.2-win32\workspace\RMISamples\src>java -classpath example/hello
example.hello.Server
Exception in thread "main" java.lang.NoClassDefFoundError: example/hello/Server

C:\eclipse-SDK-3.2-win32\workspace\RMISamples\src>java -classpath . example.hell
o.Server
Exception in thread "main" java.lang.NoClassDefFoundError: example/hello/Server

C:\eclipse-SDK-3.2-win32\workspace\RMISamples\src>

Source code herunder  (output med stack trace findes længere nede)
===================================================================


Hello.java:
package example.hello;

import java.rmi.Remote;
import java.rmi.RemoteException;

public interface Hello extends Remote {
    String sayHello() throws RemoteException;
}



Server.java:
package example.hello;

import java.rmi.registry.Registry;
import java.rmi.registry.LocateRegistry;
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;

public class Server implements Hello {

	public Server() {
	}

	public String sayHello() {
		return "Hello, world!";
	}

	public static void main(String args[]) {

		try {
			/*
			 * The main method of the server needs to create the remote object that 
			 * provides the service. Additionally, the remote object must be 
			 * exported to the Java RMI runtime so that it may receive incoming 
			 * remote calls. This can be done as follows:
			 */
			Server obj = new Server();
			int port = 2002;
			Hello stub = (Hello) UnicastRemoteObject.exportObject(obj, port);

			// Bind the remote object's stub in the registry
			Registry registry = LocateRegistry.getRegistry(2001);
			registry.bind("Hello", stub);

			System.err.println("Server ready");
		} catch (Exception e) {
			System.err.println("Server exception: " + e.toString());
			e.printStackTrace();
		}
	}
}




Client.java:
package example.hello;

import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;

public class Client {

	private Client() {
	}

	public static void main(String[] args) {

		int port = 2001;
		String host = (args.length < 1) ? null : args[0];
		try {
			Registry registry = LocateRegistry.getRegistry(host, port);
			Hello stub = (Hello) registry.lookup("Hello");
			String response = stub.sayHello();
			System.out.println("response: " + response);
		} catch (Exception e) {
			System.err.println("Client exception: " + e.toString());
			e.printStackTrace();
		}
	}
}





---------------- stack traces --------

Server exception: java.rmi.ServerException: RemoteException occurred in server thread; nested exception is: 
	java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is: 
	java.lang.ClassNotFoundException: example.hello.Hello
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is: 
	java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is: 
	java.lang.ClassNotFoundException: example.hello.Hello
	at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:385)
	at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:240)
	at sun.rmi.transport.Transport$1.run(Transport.java:153)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.Transport.serviceCall(Transport.java:149)
	at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:701)
	at java.lang.Thread.run(Thread.java:595)
	at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(Unknown Source)
	at sun.rmi.transport.StreamRemoteCall.executeCall(Unknown Source)
	at sun.rmi.server.UnicastRef.invoke(Unknown Source)
	at sun.rmi.registry.RegistryImpl_Stub.bind(Unknown Source)
	at example.hello.Server.main(Server.java:32)
Caused by: java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is: 
	java.lang.ClassNotFoundException: example.hello.Hello
	at sun.rmi.registry.RegistryImpl_Skel.dispatch(Unknown Source)
	at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:375)
	at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:240)
	at sun.rmi.transport.Transport$1.run(Transport.java:153)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.Transport.serviceCall(Transport.java:149)
	at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:701)
	at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.ClassNotFoundException: example.hello.Hello
	at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:242)
	at sun.rmi.server.LoaderHandler.loadProxyInterfaces(LoaderHandler.java:707)
	at sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:651)
	at sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:588)
	at java.rmi.server.RMIClassLoader$2.loadProxyClass(RMIClassLoader.java:628)
	at java.rmi.server.RMIClassLoader.loadProxyClass(RMIClassLoader.java:294)
	at sun.rmi.server.MarshalInputStream.resolveProxyClass(MarshalInputStream.java:238)
	at java.io.ObjectInputStream.readProxyDesc(ObjectInputStream.java:1494)
	at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1457)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1693)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299)
	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:339)
	... 9 more