JAVA XML

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JavaXml EXAMPLE

Count the Elements in a XML File
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In this we learn that how we will count the element in XML file using DOM APIs defined in the org.apache.xerces.parsers.DOMParser package. Your classpath must contain xercesImpl.jar and xml-apis.jar files to run this program. we can download it from Xerces

Here is the XML File: Stusent_Detail.xml

<?xml version = "1.0" ?>
<Student_Detail>
<Student>
<stu_Id> s-001 </stu_Id>
<stu_Name> samir </stu_Name>
<stu_E-mail> sam1@yahoo.com </stu_E-mail>
</Student>
<Student>
<stu_Id> s-002 </stu_Id>
<stu_Name> Ajit </stu_Name>
<stu_E-mail> Ajit2@gmail.com </stu_E-mail>
</Student>
<Student>
<stu_Id> s-003 </stu_Id>
<stu_Name> Deepti </stu_Name>
<stu_E-mail> Deep3@yahoo.com </stu_E-mail>
</Student>
</Student_Detail>

Here is the Java File: CountNodes.java

 

package r4r;
import org.w3c.dom.*;
import org.apache.xerces.parsers.DOMParser;
import java.io.*;
public class totalnode {
public static void main(String[] args) {
try{
BufferedReader br = new BufferedReader(
new InputStreamReader(System.in));
System.out.print("Enter the file name: ");
String str = br.readLine();
File file = new File(str);
if (file.exists()){
DOMParser pars = new DOMParser();
pars.parser(str);
Document docu = pars.getDocument();
System.out.print("Enter element to count: ");
String ele = br.readLine();
NodeList list1 = docu.getElementsByTagName(ele);
System.out.println("Number of nodes: " + list1.getLength());
}
else{
System.out.println("File not found!");
}
}
catch (Exception e){
e.getMessage();
}
}
}
package org.apache.xerces.parsers;
import org.w3c.dom.Document;
public class DOMParser {
public void parser(String str) {
// TODO Auto-generated method stub
}
public Document getDocument() {
// TODO Auto-generated method stub
return null;
}
}
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