javax.xml
public class XMLConstants extends Object
This class contains a set of constants, as specified by various W3C and other standards.
Since: JAXB 1.0
Field Summary | |
---|---|
static String | DEFAULT_NS_PREFIX This constant is used to represent the default namespace. |
static String | XMLNS_ATTRIBUTE Constant holding the attribute name for declaration of new prefixes. |
static String | XMLNS_ATTRIBUTE_NS_URI Constant holding the namespace of the "xmlns" attribute: "http://www.w3.org/2000/xmlns/". Note: This namespace will always be used for the
attribute, regardless whether you used it as an attribute name
(as in |
static String | XML_NS_PREFIX Constant holding the reserved "xml" prefix. |
static String | XML_NS_URI Constant holding the reserved namespace URI associated with the "xml" prefix. |
This constant is used to represent the default namespace. Elements or attributes in the default namespace are sometimes also referred as "having no namespace". The constant value is "" (the empty string).
Note: The default namespace is used like this
in SAX handlers. Note, that DOM uses null
to represent the default namespace, hence a different
value.
Constant holding the attribute name for declaration of new prefixes. The constant value is "xmlns".
Note: This is both an attribute name and a namespace prefix: For example, to assign the empty prefix to a namespace, one would use
xmlns="http://my.namespace/..."But for assigning the prefix "pre" to the same namespace, one would use
xmlns:pre="http://my.namespace/..."
Constant holding the namespace of the "xmlns" attribute: "http://www.w3.org/2000/xmlns/".
Note: This namespace will always be used for the
attribute, regardless whether you used it as an attribute name
(as in xmlns="..."
or as an attribute prefix
(as in xmlns:pre="..."
).
Constant holding the reserved "xml" prefix. This prefix is reserved by the XML namespace standard. Unlike other prefixes, this one is fixed and will always be associated with the same namespace, XML_NS_URI. Namespace and prefix are reserved by the XML namespace standard for use by the XML specifications.
Note: Not only the prefix "xml" itself is reserved, but also any other prefix beginning with "xml". For example, a "new_prefix" may be declared in an XML instance by using the attribute "xmlns:new_prefix".
Constant holding the reserved namespace URI associated with the "xml" prefix. Namespace and prefix are reserved by the XML namespace standard for use by the XML specifications.