BIG JAVA: LATE OBJECTS
BIG JAVA: LATE OBJECTS
2nd Edition
ISBN: 9781119626220
Author: Horstmann
Publisher: WILEY
Expert Solution & Answer
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Chapter 24, Problem 10RE

Explanation of Solution

XPath:

The easiest way to inspect the XML document is by using the XPath syntax.

  • In the DOM standard, a node is a common superclass for all the components that is present in the XML document.
  • To be precise, nodes are elements and text sequences.
  • XPath describes a node or set of nodes, the syntax of XPath is similar to that of directory paths.

Example:

/items/item[1]/quantity

 The above XPath selects the quantity of the first item.

 Result of evaluating the following XPath expressions:

 a. /purse/coin[1]/value

 The above XPath is used to evaluate and determine the value of first coin given in the XML file.

 As per the tree view of the XML file, the value of the first coin is “0.5”.

 b. /purse/coin[2]/name

 The above XPath is used to evaluate and determine the name of the second coin given in the XML file.

 As per the tree view of the XML file, the name of the second coin is “quarter”...

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