code: public static boolean isInstaneOf(String srcClassName, Class trg) {
  	Class clazz = ClassUtil.loadClass(srcClassName, null);
  	if (clazz == null) return false;
  	return isInstaneOf(clazz, trg);
      }
docs: check if Class is instanceof a a other Class
  
  @param srcClassName Class name to check
  @param trg is Class of?
  @return is Class Class of...