code: public static Class forName(Class clazz, ClassLoader classLoader)
      throws ClassNotFoundException, LinkageError
    {
      if(clazz == null)
        return null;
  
      if(classLoader == null)
      {
        classLoader = getDefaultClassLoader();
      }
  
      if(clazz.getClassLoader() == null || clazz.getClassLoader().equals(classLoader))
        return clazz;
      else
        return forName(clazz.getName(), classLoader);
    }
docs: Convenient call to return a class in a different class loader... note that it will handle
  correctly a class in the same class loader
  
  @param clazz       the clazz you want in a different class loader
  @param classLoader the class loader to use (may be <code>null</code>, which indicates the
  default class loader)
  @return Class instance for the supplied name
  @throws ClassNotFoundException if the class was not found
  @throws LinkageError           if the class file could not be loaded
  @see Class#forName(String, boolean, ClassLoader)