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Problems with RMI Server; rmiregistry on windows

So we haft to use a RMI Server and Client for some exercice in class. Our professor don't want us to use `LocateRegirstry.createRegistry()`, instead we shall start the rmiregistry from within either intellij external tools, or the cmd. I tried several things, nothing seems to work. I opened cmd both as Admin and normal User, started rmiregistry from within the "out" dictionary of the project (professor said it has to be started in the same dictionary where the byte code lies). Made a link to the original rmiregistry and placed it into the "out" dictionary,startet it from intellij terminal, external tools etc. but i cant get it to work.
at the moment i get this Error:
DateServerImpl: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: RMI.DateServer
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: RMI.DateServer
at java.rmi/sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:391)
at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:200)
at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:197)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:691)
at java.rmi/sun.rmi.transport.Transport.serviceCall(Transport.java:196)
at java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:587)
at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:828)
at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:705)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:704)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630)
at java.base/java.lang.Thread.run(Thread.java:832)
at java.rmi/sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:303)
at java.rmi/sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:279)
at java.rmi/sun.rmi.server.UnicastRef.invoke(UnicastRef.java:380)
at java.rmi/sun.rmi.registry.RegistryImpl_Stub.rebind(RegistryImpl_Stub.java:158)
at java.rmi/java.rmi.Naming.rebind(Naming.java:177)
at RMI.DateServerImpl.main(DateServerImpl.java:20)
Caused by: java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: RMI.DateServer
at java.rmi/sun.rmi.registry.RegistryImpl_Skel.dispatch(RegistryImpl_Skel.java:157)
at java.rmi/sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:468)
at java.rmi/sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:298)
at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:200)
at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:197)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:691)
at java.rmi/sun.rmi.transport.Transport.serviceCall(Transport.java:196)
at java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:587)
at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:828)
at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:705)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:704)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630)
at java.base/java.lang.Thread.run(Thread.java:832)
Caused by: java.lang.ClassNotFoundException: RMI.DateServer
at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:435)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:589)
at java.rmi/sun.rmi.server.LoaderHandler$Loader.loadClass(LoaderHandler.java:1207)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:468)
at java.rmi/sun.rmi.server.LoaderHandler.loadClassForName(LoaderHandler.java:1221)
at java.rmi/sun.rmi.server.LoaderHandler.loadProxyInterfaces(LoaderHandler.java:731)
at java.rmi/sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:674)
at java.rmi/sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:611)
at java.rmi/java.rmi.server.RMIClassLoader$2.loadProxyClass(RMIClassLoader.java:646)
at java.rmi/java.rmi.server.RMIClassLoader.loadProxyClass(RMIClassLoader.java:311)
at java.rmi/sun.rmi.server.MarshalInputStream.resolveProxyClass(MarshalInputStream.java:254)
at java.base/java.io.ObjectInputStream.readProxyDesc(ObjectInputStream.java:1950)
at java.base/java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1892)
at java.base/java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2202)
at java.base/java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1712)
at java.base/java.io.ObjectInputStream.readObject(ObjectInputStream.java:519)
at java.base/java.io.ObjectInputStream.readObject(ObjectInputStream.java:477)
at java.rmi/sun.rmi.registry.RegistryImpl_Skel.dispatch(RegistryImpl_Skel.java:154)
... 14 more
I couldn't find the solution on google ( which leads me here anyway most of the time, to similar problems, but couldn't figure anything out with those posts)
here is the code i use:
Server Code
package RMI;
import java.rmi.*;
import java.rmi.server.*;
import java.util.Date;
public class DateServerImpl extends UnicastRemoteObject implements DateServer {
public DateServerImpl () throws RemoteException {
}
public Date getDate () throws RemoteException {
System.out.println("Invocation of getDate()");
return new Date ();
}
public static void main (String[] args) {
try {
DateServerImpl dateServer = new DateServerImpl ();
Naming.rebind ("DateServer", dateServer);
System.out.println("The server is up");
} catch (Exception e) {
System.out.println("DateServerImpl: " + e.getMessage());
e.printStackTrace();
}
}
}
Interface Code
package RMI;
import java.rmi.Remote;
import java.rmi.RemoteException;
import java.util.Date;
public interface DateServer extends Remote {
public Date getDate () throws RemoteException;
}
So I hope anybody can help me here. What am I doing wrong?
I hope this is enough information, first time posting here =D
Thank you!

It's funny that this problem has been around for 20+ years. After opening CMD, you need to set the environment variable CLASSPATH and include every JAR/directory needed to properly find your server classes, and then start rmiregistry.

So I just found a workaround. I used the javac command to compile it over cmd, started the rmiregistry and than the server... and it worked. So I assume it is a Problem of intellij, because .class and .java are in different dictionary and therefore the exception "class not found" makes sense. Now i just need to find a way to reorganize intellij... Thanks for the help so far =D
Edit: Intellij on Windows needs the "out" dictionary to be mirrored(On Linux it seems no problem at all, as long as you started rmiregistry in the same dictionary as your byte code aka .class files are). So Go to
File->Project Structure->Modules->Paths
choose Use module compile output path, and just use out as output
after that, got to intellij terminal, change to the out dictionary, start rmiregistry and than start the server.
That's it, works for me =D.

Remote call a webcam in Java

So I'm fiddling about with webcam usage in Java. I have tried using this set of libraries found here: https://github.com/sarxos/webcam-capture
All the examples seem to work and I can call webcam opening from other classes as well. However, my current setup I'm using includes a webapp hosted on a Tomcat server in Eclipse EE. When a button is pressed it sends a message to the server and does the according command based on the message.
The problem is that when a message is send to open the camera I get this error:
java.lang.RuntimeException: com/github/sarxos/webcam/WebcamPanel
at org.apache.tomcat.websocket.pojo.PojoMessageHandlerBase.handlePojoMethodException(PojoMessageHandlerBase.java:119)
at org.apache.tomcat.websocket.pojo.PojoMessageHandlerWholeBase.onMessage(PojoMessageHandlerWholeBase.java:82)
at org.apache.tomcat.websocket.WsFrameBase.sendMessageText(WsFrameBase.java:393)
at org.apache.tomcat.websocket.WsFrameBase.processDataText(WsFrameBase.java:494)
at org.apache.tomcat.websocket.WsFrameBase.processData(WsFrameBase.java:289)
at org.apache.tomcat.websocket.WsFrameBase.processInputBuffer(WsFrameBase.java:130)
at org.apache.tomcat.websocket.server.WsFrameServer.onDataAvailable(WsFrameServer.java:60)
at org.apache.tomcat.websocket.server.WsHttpUpgradeHandler$WsReadListener.onDataAvailable(WsHttpUpgradeHandler.java:203)
at org.apache.coyote.http11.upgrade.AbstractServletInputStream.onDataAvailable(AbstractServletInputStream.java:198)
at org.apache.coyote.http11.upgrade.AbstractProcessor.upgradeDispatch(AbstractProcessor.java:96)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:654)
at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:223)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1558)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1515)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NoClassDefFoundError: com/github/sarxos/webcam/WebcamPanel
at WebcamPanelExample.handleMessage(WebcamPanelExample.java:28)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.apache.tomcat.websocket.pojo.PojoMessageHandlerWholeBase.onMessage(PojoMessageHandlerWholeBase.java:80)
... 16 more
Caused by: java.lang.ClassNotFoundException: com.github.sarxos.webcam.WebcamPanel
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1305)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1157)
... 22 more
If I create a main method to open the camera it seems to work fine, but when I want to call it from from the message handler it doesn't. Is there something obvious I am missing?
Thanks in advance!
Doesn't work:
#OnMessage
public void handleMessage(String message) throws IOException {
if(message.equals("Camera"))
{
CameraTest.OpenCam1(); // Method that opens camera
}
}
Works:
public static void main(String[] args) {
CameraTest.OpenCam();
}

RMI - Unmarshalled Exception

I can't seem to get this working. I'm just look at it for basic instruction for a lab, but I've no experience with RMI at all. I can't seem to get why I'm getting the error.
Server
public static void runServer() {
// Install security manager, if none is present
if (System.getSecurityManager() == null) {
System.setSecurityManager(new SecurityManager());
}
try {
Registry registry = LocateRegistry.getRegistry();
System.out.println("Reg: " + registry.toString());
String name = "Server";
Server server = new Server();
I_Server stub = (I_Server) UnicastRemoteObject.exportObject(server, 0);
registry.rebind(name, stub);
System.out.println("All is well :-)\n");
} catch (RemoteException re) {
System.err.println("Remote Exception in DisplayGetEngine.main()\n");
re.printStackTrace();
}
}
}
I have the following run commands and arguments in NetBeans
Arguments: -cp C:\rmi\Server\src;C:\rmi\Server\dist\Server.jar -Djava.rmi.server.codebase=file:/C:/rmi/Server/dist/Server.jar
Working Directory: C:\rmi\Server
My stacktrace is, at the rebind method.
Reg: RegistryImpl_Stub[UnicastRef [liveRef: [endpoint:[10.50.18.205:1099](remote),objID:[0:0:0, 0]]]]
Remote Exception in DisplayGetEngine.main()
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: server.I_Server
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:419)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:267)
at sun.rmi.transport.Transport$1.run(Transport.java:177)
at sun.rmi.transport.Transport$1.run(Transport.java:174)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:173)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:553)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:808)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:667)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:273)
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:251)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:377)
at sun.rmi.registry.RegistryImpl_Stub.rebind(Unknown Source)
at server.Server.runServer(Server.java:50)
at server.Server.main(Server.java:31)
If I don't run rmiregistry, this is my stacktrace
Remote Exception in DisplayGetEngine.main()
java.rmi.ConnectException: Connection refused to host: 10.50.18.205; nested exception is:
java.net.ConnectException: Connection refused: connect
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:619)
at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:216)
at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:202)
at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:340)
at sun.rmi.registry.RegistryImpl_Stub.rebind(Unknown Source)
at server.Server.runServer(Server.java:50)
at server.Server.main(Server.java:31)

Try calling createRegistry() first to make sure that you have a running registry. Also, port 0 should be a reserved port so you won't be able to make your server listen on that particular port. Try the default one 1099.

There is no problem in running rmiregistry. If you look into the stacktrace closely,the problem seems to be ClassNotFoundException while the arguments are being unmarshalled in the rmi registry. You will have to check the code base of the RMI server whether server.I_Server class is present in the Server.jar while running it in the classpath.
From RMI FAQs
A.4 Why am I getting a ClassNotFoundException?
Most likely the java.rmi.server.codebase property has not been set (or has not been set correctly) on a VM that is exporting your remote object(s). Please take a look at our tutorial, Dynamic code downloading using Java RMI (Using the java.rmi.server.codebase Property).

The issue was in the build file. I needed to insert this statement.
<target name="startRMI" depends="init">
<exec executable="C:\Program\Files\Java\jdk1.7.0_51\jre\bin\rmiregistry"
dir="${build.classes.dir}"></exec>
</target>

Error while initializing metro webservice client

Since few weeks we have some trouble with our external test environment (which is not operated by us). Our webapplication is connected to a soap webservice.
We are using:
metro 2.1.1 for the webservice client
java-1.5.0-ibm-1.5.0.12.4 is installed on the test environment.
tomcat version: 5.5.27
The first time trying to initialize the client on this environment, we are getting the following exception (only on this environment):
java.lang.ExceptionInInitializerError
at java.lang.J9VMInternals.initialize(J9VMInternals.java:218)
at javax.xml.ws.Service.<init>(Service.java:57)
at com.xxx.xxx.xxx.xxxy.client.MyServiceRequestProvider_Service.<init>(MyServiceRequestProvider_Service.java:50)
at com.xxx.xxx.client.MyServiceRequester.<init>(MyServiceRequester.java:63)
at com.xxx.xxx.action.CheckAction.execute(CheckAction.java:120)
at com.xxx.xxx.webservice.validators.ApplicationValidatorImpl.validateCheck(ApplicationValidatorImpl.java:403)
at com.xxx.xxx.webservice.validators.ApplicationValidatorImpl$$EnhancerByGuice$$55e5e7ad.CGLIB$validateCheck$6(<generated>)
at com.xxx.xxx.webservice.validators.ApplicationValidatorImpl$$EnhancerByGuice$$55e5e7ad$$FastClassByGuice$$380e5720.invoke(<generated>)
at com.google.inject.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:187)
at com.google.inject.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:66)
at com.xxx.xxx.webservice.guice.interceptor.ValidationErrorInterceptor.invoke(ValidationErrorInterceptor.java:21)
at com.google.inject.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:66)
at com.xxx.xxx.webservice.guice.interceptor.PersistenzInterceptor.invoke(PersistenzInterceptor.java:35)
at com.google.inject.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:66)
at com.google.inject.InterceptorStackCallback.intercept(InterceptorStackCallback.java:45)
at com.xxx.xxx.webservice.validators.ApplicationValidatorImpl$$EnhancerByGuice$$55e5e7ad.validateCheck(<generated>)
at com.xxx.xxx.webservice.endpoint.xxxWS.order(xxxWS.java:99)
at com.xxx.xxx.webservice.endpoint.xxxWS$$EnhancerByGuice$$3bd5ffaf.CGLIB$order$1(<generated>)
at com.xxx.xxx.webservice.endpoint.xxxWS$$EnhancerByGuice$$3bd5ffaf$$FastClassByGuice$$806bc0a0.invoke(<generated>)
at com.google.inject.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:187)
at com.google.inject.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:66)
at com.xxx.xxx.webservice.guice.interceptor.RsvAgeManipulatorInterceptor.invoke(RsvAgeManipulatorInterceptor.java:95)
at com.google.inject.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:66)
at com.xxx.xxx.webservice.guice.interceptor.ValueConverterInterceptor.invoke(ValueConverterInterceptor.java:101)
at com.google.inject.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:66)
at com.xxx.xxx.webservice.guice.interceptor.DataValidationInterceptor.invoke(DataValidationInterceptor.java:31)
at com.google.inject.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:66)
at com.xxx.xxx.webservice.guice.interceptor.UserValidationInterceptor.invoke(UserValidationInterceptor.java:36)
at com.google.inject.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:66)
at com.xxx.xxx.webservice.guice.interceptor.SessionInitializerInterceptor.invoke(SessionInitializerInterceptor.java:65)
at com.google.inject.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:66)
at com.google.inject.InterceptorStackCallback.intercept(InterceptorStackCallback.java:45)
at com.xxx.xxx.webservice.endpoint.xxxWS$$EnhancerByGuice$$3bd5ffaf.order(<generated>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:618)
at com.sun.xml.ws.api.server.InstanceResolver$1.invoke(InstanceResolver.java:250)
at com.sun.xml.ws.server.InvokerTube$2.invoke(InvokerTube.java:150)
at com.sun.xml.ws.server.sei.EndpointMethodHandler.invoke(EndpointMethodHandler.java:261)
at com.sun.xml.ws.server.sei.SEIInvokerTube.processRequest(SEIInvokerTube.java:100)
at com.sun.xml.ws.api.pipe.Fiber.__doRun(Fiber.java:641)
at com.sun.xml.ws.api.pipe.Fiber._doRun(Fiber.java:600)
at com.sun.xml.ws.api.pipe.Fiber.doRun(Fiber.java:585)
at com.sun.xml.ws.api.pipe.Fiber.runSync(Fiber.java:482)
at com.sun.xml.ws.server.WSEndpointImpl$2.process(WSEndpointImpl.java:314)
at com.sun.xml.ws.transport.http.HttpAdapter$HttpToolkit.handle(HttpAdapter.java:608)
at com.sun.xml.ws.transport.http.HttpAdapter.handle(HttpAdapter.java:259)
at com.sun.xml.ws.transport.http.servlet.ServletAdapter.invokeAsync(ServletAdapter.java:207)
at com.sun.xml.ws.transport.http.servlet.WSServletDelegate.doGet(WSServletDelegate.java:159)
at com.sun.xml.ws.transport.http.servlet.WSServletDelegate.doPost(WSServletDelegate.java:194)
at com.sun.xml.ws.transport.http.servlet.WSServlet.doPost(WSServlet.java:80)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:200)
at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:775)
at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:704)
at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:897)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)
at java.lang.Thread.run(Thread.java:811)
Caused by: java.lang.SecurityException: java.util.ServiceLoader - protected system package 'java.util'
at java.lang.ClassLoader.checkClassName(ClassLoader.java:213)
at java.lang.ClassLoader.defineClass(ClassLoader.java:255)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:151)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:600)
at java.net.URLClassLoader.access$400(URLClassLoader.java:124)
at java.net.URLClassLoader$ClassFinder.run(URLClassLoader.java:1055)
at java.security.AccessController.doPrivileged(AccessController.java:274)
at java.net.URLClassLoader.findClass(URLClassLoader.java:492)
at java.lang.ClassLoader.loadClass(ClassLoader.java:640)
at java.lang.ClassLoader.loadClass(ClassLoader.java:632)
at java.lang.ClassLoader.loadClass(ClassLoader.java:606)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1346)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1205)
at java.lang.Class.forNameImpl(Native Method)
at java.lang.Class.forName(Class.java:130)
at javax.xml.ws.spi.Provider.<clinit>(Provider.java:55)
at java.lang.J9VMInternals.initializeImpl(Native Method)
at java.lang.J9VMInternals.initialize(J9VMInternals.java:196)
... 68 more
Further attempts to initialize this client results in:
2012-09-26 11:34:56,016 ERROR [TP-Processor7] com.xxx.xxx.client.MyServiceRequester#<init>(65): Error initialising MyServiceRequestProvider_Service
java.lang.NoClassDefFoundError: javax.xml.ws.spi.Provider (initialization failure)
at java.lang.J9VMInternals.initialize(J9VMInternals.java:134)
at javax.xml.ws.Service.<init>(Service.java:57)
...
It seems that there are some security issues within the metro Provider class.
I think the following snipped of the class javax.xml.ws.spi.Provider of metro is the source of the failure:
static {
Method tLoadMethod = null;
Method tIteratorMethod = null;
try {
Class<?> clazz = Class.forName("java.util.ServiceLoader");
tLoadMethod = clazz.getMethod("load", Class.class);
tIteratorMethod = clazz.getMethod("iterator");
} catch(ClassNotFoundException ce) {
// Running on Java SE 5
} catch(NoSuchMethodException ne) {
// Shouldn't happen
}
loadMethod = tLoadMethod;
iteratorMethod = tIteratorMethod;
}
It seems that instead of throwing an ClassNotFoundException the Classloader throws an SecurityException, which is not catched by the
static initializer.
What can be the cause of this behaviour (some policy settings?) and how can we prevent this. The application is running on our local test environment, and was running on the external environment too. The external provider denies any changes of the environment.
Is this behaviour IBM-JDK specific ?
EDIT:
I found the following in the JDK 5.0 API class java.security.SecureClassLoader :
SecurityException - if an attempt is made to add this class to a
package that contains classes that were signed by a different set of
certificates than this class, or if the class name begins with
"java.".
But souldn't this happen to all Metro clients running on tomcat ?
EDIT:
Thanks a lot for the advice! There is actually the path of a JDK 1.6 rt.jar in the classpath. And therefore the ServiceLoader class is found but not allowed to load within the Provider.

Thanks to Sean,
There actually was the path of a JDK 1.6 rt.jar in the classpath. And therefore the ServiceLoader class is found but not allowed to load within the Provider.

Problems setting up a simple RMI server

I am having a problem setting up a simple RMI server, and was wondering if someone can point me in the right direction.
I have a simple class, Server, that should export an simple interface. Currently when I try and run the server class, I get the following exception:
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: prototype.ISimpleService
I have already made sure that the rmi registry is running, by running the "start rmiregistry" command, and I am running the service with the following argument
-Djava.rmi.server.codebase=file:C:/Users/John/Documents/NetBeansProjects/Prototype/build/classes
The path in the argument above points to the top level folder of my class hierarchy, so:
/classes
/prototype
->ISimpleService.class
->SimpleServiceImpl.class
->IServer.class
Here is my server code:
public class Server
{
private static ISimpleService service;
public static void main(String[] args)
{
service = new SimpleServiceImpl();
try
{
ISimpleService stub = (ISimpleService) UnicastRemoteObject.exportObject(service, 0);
Registry registry = LocateRegistry.getRegistry();
registry.rebind("SimpleService", stub);
System.out.println("Simple Service bound");
}
catch (Exception ex)
{
System.out.println("Exception binding the simple service");
ex.printStackTrace();
}
}
}
I have looked at the Java RMI trail, and adapted my simple example to follow that, although I am not using security/permissions that I shouldn't need as I have gotten an RMI example working before without that stuff...
So I believe I have to missing something simple(no pun intended), to make this work, but I cant see anything at the moment.
Do anyone have an ideas?
Here is the full stack trace:
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: prototype.ISimpleService
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:396)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:250)
at sun.rmi.transport.Transport$1.run(Transport.java:159)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:155)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask (ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer (StreamRemoteCall.java:255)
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:233)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:359)
at sun.rmi.registry.RegistryImpl_Stub.rebind(Unknown Source)
at prototype.Server.main(Server.java:35)
Caused by: java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: prototype.ISimpleService
at sun.rmi.registry.RegistryImpl_Skel.dispatch(Unknown Source)
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:386)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:250)
at sun.rmi.transport.Transport$1.run(Transport.java:159)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:155)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask (ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.ClassNotFoundException: prototype.ISimpleService
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at sun.rmi.server.LoaderHandler.loadProxyInterfaces(LoaderHandler.java:711)
at sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:655)
at sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:592)
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:1530)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1492)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1731)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1328)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:350)
... 12 more

I have solved this issue... Took me alittle longer than I expected though :(
Turns out when you use a codebase argument like I had done, you should place a trailing "/" at the end, if you are pointing to a directory. Once I added that in, my server successfully binds.
For a resource on this p see http://download.oracle.com/javase/1.4.2/docs/guide/rmi/codebase.html#section6

It seems prototype.ISimpleService is not in your classpath.
Try:
java -cp=C:/Users/John/Documents/NetBeansProjects/Prototype/build/classes;C:/Users/John/Documents/NetBeansProjects/Server/build/classes Server