Getting a DOM Element by Id
// Obtain an XML document; this method is implemented in
// The Quintessential Program to Create a DOM Document from an XML File
Document doc = parseXmlFile("infilename.xml", true);
// Retrieve the element using id
Element element = doc.getElementById("key1");
// Get the element's attribute
String attrValue = element.getAttribute("value"); // value1
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE map [ <!ELEMENT map (entry*) >
<!ELEMENT entry EMPTY >
<!ATTLIST entry key ID #REQUIRED
value CDATA "mydefault"> ]>
<map>
<entry key="key1" value="value1"/>
<entry key="key2" />
</map>
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