String[] potentiallyValidCrons = { "0 0 * * * ?", // Every hour
                "0 */15 * * * ?", // Every 15 minutes
                "0 0 12 * * ?", // Daily at noon
                "0 15 10 ? * MON-FRI" // Weekdays at 10:15
        };

        // Test each pattern and see what actually works
        for (String cron : potentiallyValidCrons) {
            boolean result = validator.isValid(cron, context);

        /**
         * The current year.
         */
        public int year;
        /**
         * The current day of the week (0-6, where 0 is Sunday).
         */
        public int weekday;

        @Override
        public void encode(final NdrBuffer _dst) throws NdrException {
            _dst.align(4);
            _dst.enc_ndr_long(elapsedt);
            _dst.enc_ndr_long(msecs);

        /**
         * The current year.
         */
        public int year;
        /**
         * The current day of the week (0-6, where 0 is Sunday).
         */
        public int weekday;

        @Override
        public void encode(final NdrBuffer _dst) throws NdrException {
            _dst.align(4);
            _dst.enc_ndr_long(this.elapsedt);
            _dst.enc_ndr_long(this.msecs);