/*

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

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 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

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import java.util.*;

import java.text.*;

/**

 * Test GregorianCalendar limits, which should not exist.

 * @test

 * @bug 4056585

 * @summary Make sure that GregorianCalendar works far in the past and future.

 * @author Alan Liu

 */

public class Limit {

    static final long ONE_DAY = 24*60*60*1000L;

    public static void main(String args[]) throws Exception {

        GregorianCalendar c = new GregorianCalendar();

        DateFormat fmt = new SimpleDateFormat("EEEE, MMMM dd, yyyy G", Locale.US);

        long bigMillis = 300000000000000L;

        try {

            // We check two things:

            // 1. That handling millis in the range of +/- bigMillis works.

            //    bigMillis is a value that used to blow up.

            // 2. The round-trip format/parse works in these extreme areas.

            c.setTime(new Date(-bigMillis));

            String s = fmt.format(c.getTime());

            Date d = fmt.parse(s);

            if (Math.abs(d.getTime() + bigMillis) >= ONE_DAY) {

                throw new Exception(s + " != " + fmt.format(d));

            }

            c.setTime(new Date(+bigMillis));

            s = fmt.format(c.getTime());

            d = fmt.parse(s);

            if (Math.abs(d.getTime() - bigMillis) >= ONE_DAY) {

                throw new Exception(s + " != " + fmt.format(d));

            }

        } catch (IllegalArgumentException | ParseException e) {

            throw e;

        }

    }

}