November 2002
Intermediate to advanced
1120 pages
21h 2m
English
Content preview from Processing XML with Java™: A Guide to SAX, DOM, JDOM, JAXP, and TrAX
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The ProcessingInstruction Class
The ProcessingInstruction class represents an XML processing instruction, such as <?xml-stylesheet href="book.xsl" type="application/xml"?> or <?php mysql_connect("database.unc.edu", "debra", "secret"); ?>. Each processing instruction has a target string, which must be a legal XML name; a value string, which may not contain the end-delimiter ?>; and a parent element, which may be null if the instruction is a child of a Document instead of an Element.
Note
At the time of this writing, JDOM only checks processing instruction targets for well-formedness. It does not check processing instruction data. However, checking data for the presence of illegal characters is on the TODO list.
Because so many processing instructions ...
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