Naming

java.lang.Object
- java.rmi.Naming

```
public final class Naming
extends Object
```
The Naming class provides methods for storing and obtaining references to remote objects in a remote object registry. Each method of the Naming class takes as one of its arguments a name that is a java.lang.String in URL format (without the scheme component) of the form:
```
    //host:port/name
 
```
where host is the host (remote or local) where the registry is located, port is the port number on which the registry accepts calls, and where name is a simple string uninterpreted by the registry. Both host and port are optional. If host is omitted, the host defaults to the local host. If port is 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 Naming class's bind or rebind methods.

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.createRegistry method for details).
Since:

JDK1.1

See Also:

Registry, LocateRegistry, LocateRegistry.createRegistry(int)

Method Summary

Methods

Modifier and Type	Method and Description
`static void`	`bind(String name, Remote obj)` Binds the specified `name` to a remote object.
`static String[]`	`list(String name)` Returns an array of the names bound in the registry.
`static Remote`	`lookup(String name)` Returns a reference, a stub, for the remote object associated with the specified `name`.
`static void`	`rebind(String name, Remote obj)` Rebinds the specified name to a new remote object.
`static void`	`unbind(String name)` Destroys the binding for the specified name that is associated with a remote object.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 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 specified name.
    
    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 bound
    
    RemoteException - if registry could not be contacted
    
    AccessException - if this operation is not permitted
    
    MalformedURLException - 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 specified name to 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 bound
    
    MalformedURLException - if the name is not an appropriately formatted URL
    
    RemoteException - if registry could not be contacted
    
    AccessException - 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 bound
    
    MalformedURLException - if the name is not an appropriately formatted URL
    
    RemoteException - if registry could not be contacted
    
    AccessException - 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 URL
    
    RemoteException - if registry could not be contacted
    
    AccessException - 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 URL
    
    RemoteException - if registry could not be contacted.
    
    Since:
    
    JDK1.1

Class Naming

Method Summary

Methods

Methods inherited from class java.lang.Object

Method Detail

lookup

bind

unbind

rebind

list