The rmiregistry command starts a remote object registry on the specified port on the current host. The rmiregistry command creates and starts a remote object registry on the specified port on the current host. If port is omitted, the registry is started on port 1099. The rmiregistry command produces no output and is typically run in the background. A remote object registry is a bootstrap naming service which is used by RMI servers on a host to bind remote objects to names.
Clients can then lookup remote objects and make remote method invocations.
The registry is typically used to locate the first remote object on which an application needs to invoke methods. That object in turn will provide application specific support for finding other objects. The methods of the java.rmi.registry.LocateRegistry class are used to get a registry operating on a particular host or host and port.