/*
 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
 * Copyright (c) 2012, Stephen Colebourne & Michael Nascimento Santos
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  * Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *
 *  * Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 *  * Neither the name of JSR-310 nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/**
 * <p>
 * Support for calendar systems other than the default ISO.
 * </p>
 * <p>
 * The main API is based around the calendar system defined in ISO-8601.
 * This package provides support for alternate systems.
 * </p>
 * <p>
 * The supported calendar systems includes:
 * </p>
 * <ul>
 * <li>{@link java.time.calendar.HijrahChrono Hijrah calendar}</li>
 * <li>{@link java.time.calendar.JapaneseChrono Japanese calendar}</li>
 * <li>{@link java.time.calendar.MinguoChrono Minguo calendar}</li>
 * <li>{@link java.time.calendar.ThaiBuddhistChrono Thai Buddhist calendar}</li>
 * </ul>
 * <p>
 * It is intended that applications use the main API whenever possible,
 * including code to read and write from a persistent data store,
 * such as a database, and to send dates and times across a network.
 * This package is then used at the user interface level to deal with
 * localized input/output.
 * See {@link java.time.temporal.ChronoLocalDate ChronoLocalDate}
 * for a full discussion of the issues.
 * </p>
 *
 * <h3>Example</h3>
 * <p>
 * This example creates and uses a date in a non-ISO calendar system.
 * </p>
 * <pre>
 *   // Print the Thai Buddhist date
 *       ChronoLocalDate&lt;ThaiBuddhistChrono&gt; now1 = ThaiBuddhistChrono.INSTANCE.dateNow();
 *       int day = now1.get(ChronoField.DAY_OF_MONTH);
 *       int dow = now1.get(ChronoField.DAY_OF_WEEK);
 *       int month = now1.get(ChronoField.MONTH_OF_YEAR);
 *       int year = now1.get(ChronoField.YEAR);
 *       System.out.printf("  Today is %s %s %d-%s-%d%n", now1.getChrono().getId(),
 *                 dow, day, month, year);
 *
 *   // Enumerate the list of available calendars and print today for each
 *       Set&lt;Chrono&lt;?&gt;&gt; chronos = Chrono.getAvailableChronologies();
 *       for (Chrono&lt;?&gt; chrono : chronos) {
 *         ChronoLocalDate&lt;?&gt; date = chrono.dateNow();
 *         System.out.printf("   %20s: %s%n", chrono.getId(), date.toString());
 *       }
 *
 *   // Print today's date and the last day of the year for the Thai Buddhist Calendar.
 *       ChronoLocalDate&lt;ThaiBuddhistChrono&gt; first = now1
 *                 .with(ChronoField.DAY_OF_MONTH, 1)
 *                 .with(ChronoField.MONTH_OF_YEAR, 1);
 *       ChronoLocalDate&lt;ThaiBuddhistChrono&gt; last = first
 *                 .plus(1, ChronoUnit.YEARS)
 *                 .minus(1, ChronoUnit.DAYS);
 *       System.out.printf("  %s: 1st of year: %s; end of year: %s%n", last.getChrono().getId(),
 *                 first, last);
 *  </pre>
 *
 * <h3>Package specification</h3>
 * <p>
 * Unless otherwise noted, passing a null argument to a constructor or method in any class or interface
 * in this package will cause a {@link java.lang.NullPointerException NullPointerException} to be thrown.
 * The Javadoc "@param" definition is used to summarise the null-behavior.
 * The "@throws {@link java.lang.NullPointerException}" is not explicitly documented in each method.
 * </p>
 * <p>
 * All calculations should check for numeric overflow and throw either an {@link java.lang.ArithmeticException}
 * or a {@link java.time.DateTimeException}.
 * </p>
 * @since JDK1.8
 */
package java.time.calendar;