def j(*args, **kwargs):
    """
    dump json

    since -- 2013-9-10

    *args -- tuple -- one or more json strings to dump
    """
    if not args:
        raise ValueError("you didn't pass any arguments to print out")

    with Reflect.context(args, **kwargs) as r:
        instance = J_CLASS(r, stream, **kwargs)
        instance()