Parsing xml node tags using documentbuilderfactory

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package test;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.NodeList;

public class xmlTest {

public static void main(String[] args) throws Exception {
DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
Document doc = docBuilder.parse("filePath");
NodeList nlist = doc.getElementsByTagName("param");
System.out.println(nlist.getLength());
for(int ent=0; ent<nlist.getLength(); ent++){
System.out.println(doc.getElementsByTagName("param").item(ent).getTextContent());

}

}

}

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