Cambio Utils

src/com/vespot/utils/Utils.java

  */
 public class Utils {
     
-    public String objectToXml(Object obj, Class c) {
+    public static String objectToXml(Object obj, Class c) {
         try {
             JAXBContext context = JAXBContext.newInstance(c);
             Marshaller marshaller = context.createMarshaller();
         return null;
     }
     
-    public Object xmlToObject(String content, Class c) {
+    public static Object xmlToObject(String content, Class c) {
         try {
             JAXBContext context = JAXBContext.newInstance(c);
             Unmarshaller unmarsheller = context.createUnmarshaller();