All Implemented Interfaces:

Serializable
```
public final class Namespace
extends Object
implements Serializable
```
An XML namespace representation, as well as a factory for creating XML namespace objects. All methods on Namespace (including getNamespace(String) and getNamespace(String, String)) are thread-safe.
See NamespaceAware for additional notes on how Namespaces are 'in-scope' in JDOM content, and how those in-scope Namespaces are accessed.

See Also:

NamespaceAware, Serialized Form

Field Summary

Fields
Modifier and Type	Field	Description
`static Namespace`	`NO_NAMESPACE`	Define a `Namespace` for when not in a namespace
`static Namespace`	`XML_NAMESPACE`	Define a `Namespace` for the standard xml prefix.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`equals(Object ob)`	This tests for equality - Two `Namespaces` are equal if and only if their URIs are byte-for-byte equals.
`static Namespace`	`getNamespace(String uri)`	This will retrieve (if in existence) or create (if not) a `Namespace` for the supplied URI, and make it usable as a default namespace, as no prefix is supplied.
`static Namespace`	`getNamespace(String prefix, String uri)`	This will retrieve (if in existence) or create (if not) a `Namespace` for the supplied prefix and uri.
`String`	`getPrefix()`	This returns the prefix mapped to this `Namespace`.
`String`	`getURI()`	This returns the namespace URI for this `Namespace`.
`int`	`hashCode()`	This returns the hash code for the `Namespace` that conforms to the 'equals()' contract.
`String`	`toString()`	This returns a `String` representation of this `Namespace`, suitable for use in debugging.

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

- Field Detail
  - NO_NAMESPACE
```
public static final Namespace NO_NAMESPACE
```
    Define a Namespace for when not in a namespace
  - XML_NAMESPACE
```
public static final Namespace XML_NAMESPACE
```
    Define a Namespace for the standard xml prefix.
- Method Detail
  - getNamespace
```
public static Namespace getNamespace(String prefix,
                                     String uri)
```
    This will retrieve (if in existence) or create (if not) a Namespace for the supplied prefix and uri. This method is thread-safe.
    
    Parameters:
    
    prefix - String prefix to map to Namespace.
    
    uri - String URI of new Namespace.
    
    Returns:
    
    Namespace - ready to use namespace.
    
    Throws:
    
    IllegalNameException - if the given prefix and uri make up an illegal namespace name.
    
    See Also:
    
    Verifier.checkNamespacePrefix(String), Verifier.checkNamespaceURI(String)
  - getNamespace
```
public static Namespace getNamespace(String uri)
```
    This will retrieve (if in existence) or create (if not) a Namespace for the supplied URI, and make it usable as a default namespace, as no prefix is supplied. This method is thread-safe.
    
    Parameters:
    
    uri - String URI of new Namespace.
    
    Returns:
    
    Namespace - ready to use namespace.
  - getPrefix
```
public String getPrefix()
```
    This returns the prefix mapped to this Namespace.
    
    Returns:
    
    String - prefix for this Namespace.
  - getURI
```
public String getURI()
```
    This returns the namespace URI for this Namespace.
    
    Returns:
    
    String - URI for this Namespace.
  - equals
```
public boolean equals(Object ob)
```
    This tests for equality - Two Namespaces are equal if and only if their URIs are byte-for-byte equals.
    
    Overrides:
    
    equals in class Object
    
    Parameters:
    
    ob - Object to compare to this Namespace.
    
    Returns:
    
    boolean - whether the supplied object is equal to this Namespace.
  - toString
```
public String toString()
```
    This returns a String representation of this Namespace, suitable for use in debugging.
    
    Overrides:
    
    toString in class Object
    
    Returns:
    
    String - information about this instance.
  - hashCode
```
public int hashCode()
```
    This returns the hash code for the Namespace that conforms to the 'equals()' contract.
    If two namespaces have the same URI, they are equal and have the same hash code, even if they have different prefixes.
    
    Overrides:
    
    hashCode in class Object
    
    Returns:
    
    int - hash code for this Namespace.

Class Namespace

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

NO_NAMESPACE

XML_NAMESPACE

Method Detail

getNamespace

getNamespace

getPrefix

getURI

equals

toString

hashCode