Updating xml using dom in java

As mentioned above, XPath uses a path expression to select nodes or list of node from an xml document.

Sometimes you might want to parse XML specified as String value instead of reading it from file.It defines an interface that enables programs to access and update the style, structure, and contents of XML documents.XML parsers that support DOM implement this interface.You should use a DOM parser when − When you parse an XML document with a DOM parser, you get back a tree structure that contains all of the elements of your document.The DOM provides a variety of functions you can use to examine the contents and structure of the document.

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