You can specify any character string in the schema document that is the input for schema compiler and in the Java class that is the input for schema generator. Table B-2 describes the support range of the characters of java source input into the schema generator handled in JAXB, and Table B-3 describes the support range of characters of the schema document input into the schema compiler.

Table B-2 Support range of characters of java source input into the schema generator

No.	Specification location of any character string	Support range of the character
1	Class name Method name Field name	All of the following conditions must be fulfilled: Must comprise of alphanumeric characters and underlines. Must conform to the syntax rules for the NCName of XML.
2	Enumeration constant	The following condition must be fulfilled: Must comprise of alphanumeric characters and underlines.
3	prefix element of @XmlNs	All of the following conditions must be fulfilled: Must comprise of alphanumeric characters and underlines. Must conform to the syntax rules for the NCName of XML.
4	Elements of @XmlEnumValue defaultValue element of @XmlElement or @XmlElementDecl	The following condition must be fulfilled: Must comprise of Unicode Basic Latin and Japanese#1.
5	name element of the JAXB mapping annotation	All of the following conditions must be fulfilled: Must comprise of alphanumeric characters, underlines, and Japanese#1. Must conform to the syntax rules for the NCName of XML.
6	namespace element of the JAXB mapping annotation	The following condition must be fulfilled: Must be an URI character string provided in RFC 2396.#2
7	factoryMethod element of @XmlType	All of the following conditions must be fulfilled: Must comprise of alphanumeric characters and underlines. Must conform to the syntax rules for the Java identifier.
8	value element of @XmlMimeType	The following condition must be fulfilled: Must be a MIME-type text expression.

#1

Characters included in the Unicode Hiragana, Katakana, and CJK Unified Ideographs category.

#2

RFC2732 is not supported (IPv6 not supported).

Table B-3 Support range of characters of the schema document input into the schema compiler

No.	Specification location of any character string	Support range of character
1	Attributes of the schema element that specifies the xs:anyURI type (such as the targetNamespace attribute of the xs:schema element)	The following condition must be fulfilled: Must be an URI character string provided in RFC 2396.#1
2	Attributes of the schema element that specifies the xs:NCName type (such as the name attribute of the xs:element element)	All of the following conditions must be fulfilled when the output name is not changed with the custom binding declaration: Must comprise of alphanumeric characters and underlines. Must conform to the syntax rules for the NCName of XML.
		All of the following conditions must be fulfilled when the output name is changed with the custom binding declaration: Must comprise of alphanumeric characters, underlines, and Japanese#2. Must conform to the syntax rules for the NCName of XML.
3	Attributes of the schema element that specifies the xs:QName type (such as the type attribute of the xs:element element)	All of the following conditions must be fulfilled: Must be a character string of the QName format. The local name must be within the range of item no. 2. The prefix must comprise of alphanumeric characters and underlines.
4	Attribute of the schema element that specifies the xs:string type (such as the fixed or default attribute of the xs:element element, or the fixed or default attribute of the xs:attribute element) value attribute of the jaxb:typesafeEnumMember element	The following condition must be fulfilled: Must comprise of Unicode Basic Latin and Japanese#2.
5	value attribute of the xs:enumeration element	All of the following conditions must be fulfilled when the enumeration constant is not changed with the custom binding declaration: Must comprise of alphanumeric characters and underlines. Must conform to the syntax rules of the Java enumeration constant.
		All of the following conditions must be fulfilled when the enumeration constant is changed with the custom binding declaration: Must comprise of Unicode Basic Latin and Japanese#2.
6	name attribute of the JAXB element suffix attribute of the JAXB element prefix attribute of the JAXB element parseMethod or printMethod attribute of the jaxb:javaType element	All of the following conditions must be fulfilled: Must comprise of alphanumeric characters and underlines. Must conform to the syntax rules for the Java identifier.
7	name attribute of the jaxb:package element ref attribute of the JAXB element collectionType attribute of the JAXB element implClass attribute of the jaxb:class element	All of the following conditions must be fulfilled: Must comprise of alphanumeric characters, underlines, and periods (.). Must conform to the syntax rules for the Java package name.
8	Element contents of the jaxb:javadoc element	All of the following conditions must be satisfied: Must be configured of Basic Latin of Unicode and Japanese language#2. Must conform to the syntax rules of the Java command.

#1

RFC2732 is not supported (IPv6 not supported).

#2

Characters included in the category of Unicode Hiragana, Katakana, and CJK Unified Ideographs