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Editorial Team
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Asked: 2026-05-25T19:21:32+00:00

I have created a simple RMI application, that just send a message to RMI

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I have created a simple RMI application, that just send a message to RMI server.But when sending a message i got the error message.I am using eclipse for running the programs.

sending hello to 10.0.0.12:3233

java.rmi.UnmarshalException: error unmarshalling return; nested exception is: 
    java.lang.ClassNotFoundException: com.zoondia.ReceiveMessageInterface (no security manager: RMI class loader disabled)
    at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
    at test.rmi.RmiClient.main(RmiClient.java:28)
Caused by: java.lang.ClassNotFoundException: com.zoondia.ReceiveMessageInterface (no security manager: RMI class loader disabled)
    at sun.rmi.server.LoaderHandler.loadProxyClass(Unknown Source)
    at java.rmi.server.RMIClassLoader$2.loadProxyClass(Unknown Source)
    at java.rmi.server.RMIClassLoader.loadProxyClass(Unknown Source)
    at sun.rmi.server.MarshalInputStream.resolveProxyClass(Unknown Source)
    at java.io.ObjectInputStream.readProxyDesc(Unknown Source)
    at java.io.ObjectInputStream.readClassDesc(Unknown Source)
    at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
    at java.io.ObjectInputStream.readObject0(Unknown Source)
    at java.io.ObjectInputStream.readObject(Unknown Source)

Anybody knows what is the issue.Am using eclipse for running the program.is i needed rmi compailor in eclipse, or it compails automatically when running the program.

Thanks,
VKS.

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1 Answer

  1. Editorial Team

    The exception is indicating a failure to install an RMI security manager in your server. Unless a security manager is set, RMI will be unable to download any code from your client.

    You need to do something like the following in your server code:

    if (System.getSecurityManager() == null) 
{
    System.setSecurityManager(new java.rmi.RMISecurityManager());
}

    Check out the javadocs for RMISecurityManager for more information.

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