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JDOM

JDOM

JDOM is an open source Java-based document object model for XML that was designed specifically for the Java platform so that it can take advantage of its language features. JDOM integrates with Document Object Model (DOM) and Simple API for XML (SAX), supports XPath and XSLT. It uses external parsers to build documents. JDOM was developed by Jason Hunter and Brett McLaughlin starting in March 2000. It has been part of the Java Community Process as JSR 102, though that effort has since been abandoned. The name JDOM is a pseudo-acronym for Java Document Object Model.

Examples

Suppose the file "foo.xml" contains this XML document:

 
 
 

One can parse the XML file into a tree of Java objects with JDOM, like so:

SAXBuilder builder = new SAXBuilder(); Document doc = builder.build(new FileInputStream("foo.xml")); Element root = doc.getRootElement(); // root.getName() is "shop" // root.getAttributeValue("name") is "shop for geeks" // root.getAttributeValue("location") is "Tokyo, Japan" // root.getChildren() is a java.util.List object that contains 3 Element objects.

In case you don't want to create the document object from any file or any input stream, you can create the document object against the element.

Element root = new Element("shop"); // here is the root Document doc = new Document(root);

As a converse, one can construct a tree of elements, then generate a XML file from it, like:

Element root = new Element("shop"); root.setAttribute("name", "shop for geeks"); root.setAttribute("location", "Tokyo, Japan"); Element item1 = new Element("computer"); item1.setAttribute("name", "iBook"); item1.setAttribute("price", "1200$"); root.addContent(item1); // do the similar for other elements XMLOutputter outputter = new XMLOutputter(); outputter.output(new Document(root), new FileOutputStream ("foo2.xml"));

External links

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