Java tutorial
//package com.java2s; import java.io.File; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import org.w3c.dom.Document; import org.w3c.dom.Node; import org.w3c.dom.NodeList; public class Main { public static Object getBean() { try { DocumentBuilderFactory dFactory = DocumentBuilderFactory.newInstance(); DocumentBuilder builder = dFactory.newDocumentBuilder(); Document document; document = builder.parse(new File("config.xml")); NodeList nl = document.getElementsByTagName("StrategyClassName"); Node classNode = nl.item(0).getFirstChild(); String cName = classNode.getNodeValue(); System.out.println(cName); Class c = Class.forName("com.seven.strategy.sort." + cName); Object object = c.newInstance(); return object; } catch (Exception e) { e.printStackTrace(); return null; } } }