In this section, you will learn to count the elements present in a XML file using DOM APIs.
Description of program:
This program helps to count the XML element. It takes a xml file (as a string ) at the console and checks its availability. It parses the xml document using the parse() method. After parsing the XML document it asks for element name which have to count. Create a NodeList and use the getElementByTagName() method. The getLength() method counts the occurrences of the specified element. If the asked element is not available( i.e.. the given element isn't found) it returns 0.
Here is the XML File: Employee-Detail.xml
|<?xml version = "1.0" ?>
<Emp_Id> E-001 </Emp_Id>
<Emp_Name> Vinod </Emp_Name>
<Emp_E-mail> Vinod1@yahoo.com </Emp_E-mail>
<Emp_Id> E-002 </Emp_Id>
<Emp_Name> Amit </Emp_Name>
<Emp_E-mail> Amit2@yahoo.com </Emp_E-mail>
<Emp_Id> E-003 </Emp_Id>
<Emp_Name> Deepak </Emp_Name>
<Emp_E-mail> Deepak3@yahoo.com </Emp_E-mail>
Here is the Java File: DOMCountElement.java
Output of program:
Enter File name: Employee-Detail.xml
Enter element name: Emp_Name
xml Document Contains 3 elements.
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