package com.sun.j2ee.blueprints.opc.webservicebroker.provider; import org.xml.sax.*; import java.io.*; public class BrokerEntityResolver implements EntityResolver {          private static String PACKAGE_LOCATION = "/com/sun/j2ee/blueprints/opc/webservicebroker/provider/";     private static String BLUEPRINTS_NS = "http://java.sun.com/blueprints/schemas/";          public InputSource resolveEntity (String publicId, String systemId) {        if (systemId.equals(BLUEPRINTS_NS + "invoice.xsd")) {            return getClassPathSource("invoice.xsd");        } else if (systemId.equals(BLUEPRINTS_NS + "invoice-activity.xsd")) {            return getClassPathSource("invoice-activity.xsd");        } else if (systemId.equals(BLUEPRINTS_NS + "invoice-airline.xsd")) {            return getClassPathSource("invoice-airline.xsd");        } else if (systemId.equals(BLUEPRINTS_NS + "invoice-lodging.xsd")) {            return getClassPathSource("invoice-lodging.xsd");        } else {            // use the default behaviour            return null;        }   }      private InputSource getClassPathSource(String name) {       InputStream is =  null;       try {           is  = getClass().getResourceAsStream(PACKAGE_LOCATION + name);           return new InputSource(is);       } catch (Exception e) {           System.err.println("BrokerEntityResolver error resolving: " + name);           e.printStackTrace();       }       // default to the default entity resolver       return null;   } }