Top Description Constructors Methods
com.sun.xml.util

public Class XmlChars

extends Object
Class Inheritance
Methods in this class are used to determine whether characters may appear in certain roles in XML documents. Such methods are used both to parse and to create such documents.
Author
David Brownell
Version
1.8

Constructor Summary

AccessConstructor and Description
private
XmlChars()

Method Summary

Modifier and TypeMethod and Description
public static boolean
isChar(int
The 32-bit UCS-4 character being tested.
ucs4char)

Returns true if the argument, a UCS-4 character code, is valid in XML documents.

private static boolean
isCompatibilityChar(char c)

private static boolean
isExtender(char c)

public static boolean
isLetter(char c)

Returns true if the character is an XML "letter".

private static boolean
isLetter2(char c)

public static boolean
isNameChar(char c)

Returns true if the character is allowed to be a non-initial character in names according to the XML recommendation.

public static boolean
isNCNameChar(char c)

Returns true if the character is allowed to be a non-initial character in unscoped names according to the rules of the XML Namespaces proposed recommendation.

public static boolean
isSpace(char c)

Returns true if the character is allowed where XML supports whitespace characters, false otherwise.

Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Constructor Detail

XmlCharsback to summary
private XmlChars()

Method Detail

isCharback to summary
public static boolean isChar(int ucs4char)

Returns true if the argument, a UCS-4 character code, is valid in XML documents. Unicode characters fit into the low sixteen bits of a UCS-4 character, and pairs of Unicode surrogate characters can be combined to encode UCS-4 characters in documents containing only Unicode. (The char datatype in the Java Programming Language represents Unicode characters, including unpaired surrogates.)

In XML, UCS-4 characters can also be encoded by the use of character references such as �, which happens to refer to a character that is disallowed in XML documents. UCS-4 characters allowed in XML documents can be expressed with one or two Unicode characters.

Parameters
ucs4char:int

The 32-bit UCS-4 character being tested.

isCompatibilityCharback to summary
private static boolean isCompatibilityChar(char c)
isExtenderback to summary
private static boolean isExtender(char c)
isLetterback to summary
public static boolean isLetter(char c)

Returns true if the character is an XML "letter". XML Names must start with Letters or a few other characters, but other characters in names must only satisfy the isNameChar predicate.

See Also
isNameChar(char), isNCNameChar(char)
isLetter2back to summary
private static boolean isLetter2(char c)
isNameCharback to summary
public static boolean isNameChar(char c)

Returns true if the character is allowed to be a non-initial character in names according to the XML recommendation.

See Also
isNCNameChar(char), isLetter(char)
isNCNameCharback to summary
public static boolean isNCNameChar(char c)

Returns true if the character is allowed to be a non-initial character in unscoped names according to the rules of the XML Namespaces proposed recommendation. Except for precluding the colon (used to separate names from their scopes) these characters are just as allowed by the XML recommendation.

See Also
isNameChar(char), isLetter(char)
isSpaceback to summary
public static boolean isSpace(char c)

Returns true if the character is allowed where XML supports whitespace characters, false otherwise.