JAVA XML

package r4r;
import org.w3c.dom.*;
import java.io.*;
import javax.xml.parsers.*;
import javax.xml.transform.*;
import javax.xml.transform.dom.*;
import javax.xml.transform.stream.*;
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public class createxml {
	public static void main(String[] args) throws Exception {
		 BufferedReader br = new BufferedReader(
		 new InputStreamReader(System.in));
		System.out.print("Enter number to add elements in our XML file: ");
		 String str = br.readLine();
		 int nu = Integer.parseInt(str);
		 System.out.print("Enter root: ");
		 String root = br.readLine();
		 DocumentBuilderFactory docFact = DocumentBuilderFactory.newInstance();
		 DocumentBuilder docBuild = docFact.newDocumentBuilder();
		 Document docu = docBuild.newDocument();
		 Element rEle = docu.createElement(root);
		 docu.appendChild(rEle);
		 for (int i = 1; i <= nu; i++){
		 System.out.print("Enter the element: ");
		 String element = br.readLine();
		 System.out.print("Enter the data: ");
		 String data = br.readLine();
		 Element em = docu.createElement(element);
		 em.appendChild(docu.createTextNode(data));
		 rEle.appendChild(em);
		 }
		 TransformerFactory transFact = TransformerFactory.newInstance();
		 Transformer trans = transFact.newTransformer();
		 DOMSource dsrc = new DOMSource(docu);
		 StreamResult result = new StreamResult(System.out);
		 trans.transform(dsrc, result);
		 }
}