Method roll

base/src/main/java/net/time4j/Month.java:306–310

(int months)

     * @return  result of rolling operation
     */
    public Month roll(int months) {

        return Month.valueOf((this.ordinal() + (months % 12 + 12)) % 12 + 1);

    }

    /**
     * <p>Equivalent to the expression