Name: acR10002 Date: 01/21/2002



As one can see from the J2SE 1.4 spec, the Naming service in RMI requires
that:

--------- javadoc for java.rmi.Naming, J2SE 1.4 b91 -----
The Naming
class's methods take, as one of their arguments, a name that is a URL
formatted java.lang.String of the form:

    //host:port/name
---------------------------------------------------------

However, in practice it becomes that both //host:port/name and
rmi://host:port/name are acceptable. Moreover, if one binds the remote
object given the name of format "//host:port/name", and then later
attempts to obtain the list of objects bound in the registry like in the
example below:

--------------- Test.java ---------
import java.rmi.*;

public class Test {

    public static void main(String argv[]) {

        try {
            Naming.bind("//archer:5000/test", new RemoteImpl());
            String[] list = Naming.list("//archer:5000");
            for (int i=0; i<list.length; i++) {
                System.out.println(list[i]);
            }
            Naming.unbind("//archer:5000/test");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

class RemoteImpl extends java.rmi.server.UnicastRemoteObject
    implements TestRemote {
        public RemoteImpl() throws RemoteException {};
}
-----------------------------------

------------ TestRemote.java ------
import java.rmi.*;

interface TestRemote extends Remote {

}
-----------------------------------

then the scheme "rmi:" is automatically appended to each remote object's
URI, so one will see an output:

------------- output from the example -----
--> java Test
rmi://archer:5000/test
-------------------------------------------

This behavior (more specifically - prefix "rmi:") is confusing and
unspecified. Either the usage of scheme "rmi:" should be documented on
the RMI spec level as well as reflected in the javadoc for Naming methods,
or shouldn't be used in RMI implementation at all.

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