code: public static void initialize(Class<?>... classes) {
      for (Class<?> clazz : classes) {
        try {
          Class.forName(clazz.getName(), true, clazz.getClassLoader());
        } catch (ClassNotFoundException e) {
          throw new AssertionError(e);
        }
      }
    }
docs: Ensures that the given classes are initialized, as described in <a
  href="http://java.sun.com/docs/books/jls/third_edition/html/execution.html#12.4.2">JLS Section
  12.4.2</a>.
  
  <p>WARNING: Normally it's a smell if a class needs to be explicitly initialized, because static
  state hurts system maintainability and testability. In cases when you have no choice while
  inter-operating with a legacy framework, this method helps to keep the code less ugly.
  
  @throws ExceptionInInitializerError if an exception is thrown during initialization of a class