- java.lang.Object
-
- java.rmi.Naming
-
public final class Naming extends Object
TheNamingclass provides methods for storing and obtaining references to remote objects in a remote object registry. Each method of theNamingclass takes as one of its arguments a name that is ajava.lang.Stringin URL format (without the scheme component) of the form://host:port/namewhere
hostis the host (remote or local) where the registry is located,portis the port number on which the registry accepts calls, and wherenameis a simple string uninterpreted by the registry. Bothhostandportare optional. Ifhostis omitted, the host defaults to the local host. Ifportis omitted, then the port defaults to 1099, the "well-known" port that RMI's registry,rmiregistry, uses.Binding a name for a remote object is associating or registering a name for a remote object that can be used at a later time to look up that remote object. A remote object can be associated with a name using the
Namingclass'sbindorrebindmethods.Once a remote object is registered (bound) with the RMI registry on the local host, callers on a remote (or local) host can lookup the remote object by name, obtain its reference, and then invoke remote methods on the object. A registry may be shared by all servers running on a host or an individual server process may create and use its own registry if desired (see
java.rmi.registry.LocateRegistry.createRegistrymethod for details).- Since:
- JDK1.1
- See Also:
Registry,LocateRegistry,LocateRegistry.createRegistry(int)
-
-
Method Summary
Methods Modifier and Type Method and Description static voidbind(String name, Remote obj)Binds the specifiednameto a remote object.static String[]list(String name)Returns an array of the names bound in the registry.static Remotelookup(String name)Returns a reference, a stub, for the remote object associated with the specifiedname.static voidrebind(String name, Remote obj)Rebinds the specified name to a new remote object.static voidunbind(String name)Destroys the binding for the specified name that is associated with a remote object.
-
-
-
Method Detail
-
lookup
public static Remote lookup(String name) throws NotBoundException, MalformedURLException, RemoteException
Returns a reference, a stub, for the remote object associated with the specifiedname.- Parameters:
name- a name in URL format (without the scheme component)- Returns:
- a reference for a remote object
- Throws:
NotBoundException- if name is not currently boundRemoteException- if registry could not be contactedAccessException- if this operation is not permittedMalformedURLException- if the name is not an appropriately formatted URL- Since:
- JDK1.1
-
bind
public static void bind(String name, Remote obj) throws AlreadyBoundException, MalformedURLException, RemoteException
Binds the specifiednameto a remote object.- Parameters:
name- a name in URL format (without the scheme component)obj- a reference for the remote object (usually a stub)- Throws:
AlreadyBoundException- if name is already boundMalformedURLException- if the name is not an appropriately formatted URLRemoteException- if registry could not be contactedAccessException- if this operation is not permitted (if originating from a non-local host, for example)- Since:
- JDK1.1
-
unbind
public static void unbind(String name) throws RemoteException, NotBoundException, MalformedURLException
Destroys the binding for the specified name that is associated with a remote object.- Parameters:
name- a name in URL format (without the scheme component)- Throws:
NotBoundException- if name is not currently boundMalformedURLException- if the name is not an appropriately formatted URLRemoteException- if registry could not be contactedAccessException- if this operation is not permitted (if originating from a non-local host, for example)- Since:
- JDK1.1
-
rebind
public static void rebind(String name, Remote obj) throws RemoteException, MalformedURLException
Rebinds the specified name to a new remote object. Any existing binding for the name is replaced.- Parameters:
name- a name in URL format (without the scheme component)obj- new remote object to associate with the name- Throws:
MalformedURLException- if the name is not an appropriately formatted URLRemoteException- if registry could not be contactedAccessException- if this operation is not permitted (if originating from a non-local host, for example)- Since:
- JDK1.1
-
list
public static String[] list(String name) throws RemoteException, MalformedURLException
Returns an array of the names bound in the registry. The names are URL-formatted (without the scheme component) strings. The array contains a snapshot of the names present in the registry at the time of the call.- Parameters:
name- a registry name in URL format (without the scheme component)- Returns:
- an array of names (in the appropriate format) bound in the registry
- Throws:
MalformedURLException- if the name is not an appropriately formatted URLRemoteException- if registry could not be contacted.- Since:
- JDK1.1
-
-
Document created the 11/06/2005, last modified the 04/03/2020
Source of the printed document:https://www.gaudry.be/en/java-api-rf-java/rmi/naming.html
The infobrol is a personal site whose content is my sole responsibility. The text is available under CreativeCommons license (BY-NC-SA). More info on the terms of use and the author.
References
These references and links indicate documents consulted during the writing of this page, or which may provide additional information, but the authors of these sources can not be held responsible for the content of this page.
The author This site is solely responsible for the way in which the various concepts, and the freedoms that are taken with the reference works, are presented here. Remember that you must cross multiple source information to reduce the risk of errors.
