Java tutorial
//package com.java2s; import java.io.Reader; import java.io.StringReader; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import org.xml.sax.InputSource; public class Main { static DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); public static boolean isValidXML(String xml) { try { DocumentBuilder builder = dbf.newDocumentBuilder(); Reader reader = null; try { reader = new StringReader(xml); builder.parse(new InputSource(reader)); } finally { if (reader != null) { reader.close(); } } return true; } catch (Exception e) { return false; } } }