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/*
 *  Copyright 2001-2005 Stephen Colebourne
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.joda.time;

/**
 * DateTimeConstants is a non-instantiable class of constants used in
 * the date time system. These are the ISO8601 constants, but should be
 * used by all chronologies.
 * 

* DateTimeConstants is thread-safe and immutable. * * @author Stephen Colebourne * @author Brian S O'Neill * @since 1.0 */ public class DateTimeConstants { // These are ints not enumerations as they represent genuine int values /** Constant (1) representing January, the first month (ISO) */ public static final int JANUARY = 1; /** Constant (2) representing February, the second month (ISO) */ public static final int FEBRUARY = 2; /** Constant (3) representing March, the third month (ISO) */ public static final int MARCH = 3; /** Constant (4) representing April, the fourth month (ISO) */ public static final int APRIL = 4; /** Constant (5) representing May, the fifth month (ISO) */ public static final int MAY = 5; /** Constant (6) representing June, the sixth month (ISO) */ public static final int JUNE = 6; /** Constant (7) representing July, the seventh month (ISO) */ public static final int JULY = 7; /** Constant (8) representing August, the eighth month (ISO) */ public static final int AUGUST = 8; /** Constant (9) representing September, the nineth month (ISO) */ public static final int SEPTEMBER = 9; /** Constant (10) representing October, the tenth month (ISO) */ public static final int OCTOBER = 10; /** Constant (11) representing November, the eleventh month (ISO) */ public static final int NOVEMBER = 11; /** Constant (12) representing December, the twelfth month (ISO) */ public static final int DECEMBER = 12; // These are ints not enumerations as they represent genuine int values /** Constant (1) representing Monday, the first day of the week (ISO) */ public static final int MONDAY = 1; /** Constant (2) representing Tuesday, the second day of the week (ISO) */ public static final int TUESDAY = 2; /** Constant (3) representing Wednesday, the third day of the week (ISO) */ public static final int WEDNESDAY = 3; /** Constant (4) representing Thursday, the fourth day of the week (ISO) */ public static final int THURSDAY = 4; /** Constant (5) representing Friday, the fifth day of the week (ISO) */ public static final int FRIDAY = 5; /** Constant (6) representing Saturday, the sixth day of the week (ISO) */ public static final int SATURDAY = 6; /** Constant (7) representing Sunday, the seventh day of the week (ISO) */ public static final int SUNDAY = 7; /** Constant (0) representing AM, the morning (from Calendar) */ public static final int AM = 0; /** Constant (1) representing PM, the afternoon (from Calendar) */ public static final int PM = 1; /** Constant (0) representing BC, years before zero (from Calendar) */ public static final int BC = 0; /** Alternative constant (0) representing BCE, Before Common Era (secular) */ public static final int BCE = 0; /** * Constant (1) representing AD, years after zero (from Calendar). *

* All new chronologies with different Era values should try to assign * eras as follows. The era that was in force at 1970-01-01 (ISO) is assigned * the value 1. Earlier eras are assigned sequentially smaller numbers. * Later eras are assigned sequentially greater numbers. */ public static final int AD = 1; /** * Alternative constant (1) representing CE, Common Era (secular). *

* All new chronologies with different Era values should try to assign * eras as follows. The era that was in force at 1970-01-01 (ISO) is assigned * the value 1. Earlier eras are assigned sequentially smaller numbers. * Later eras are assigned sequentially greater numbers. */ public static final int CE = 1; /** Milliseconds in one second (1000) (ISO) */ public static final int MILLIS_PER_SECOND = 1000; /** Seconds in one minute (60) (ISO) */ public static final int SECONDS_PER_MINUTE = 60; /** Milliseconds in one minute (ISO) */ public static final int MILLIS_PER_MINUTE = MILLIS_PER_SECOND * SECONDS_PER_MINUTE; /** Minutes in one hour (ISO) */ public static final int MINUTES_PER_HOUR = 60; /** Seconds in one hour (ISO) */ public static final int SECONDS_PER_HOUR = SECONDS_PER_MINUTE * MINUTES_PER_HOUR; /** Milliseconds in one hour (ISO) */ public static final int MILLIS_PER_HOUR = MILLIS_PER_MINUTE * MINUTES_PER_HOUR; /** Hours in a typical day (24) (ISO). Due to time zone offset changes, the * number of hours per day can vary. */ public static final int HOURS_PER_DAY = 24; /** Minutes in a typical day (ISO). Due to time zone offset changes, the number * of minutes per day can vary. */ public static final int MINUTES_PER_DAY = MINUTES_PER_HOUR * HOURS_PER_DAY; /** Seconds in a typical day (ISO). Due to time zone offset changes, the number * of seconds per day can vary. */ public static final int SECONDS_PER_DAY = SECONDS_PER_HOUR * HOURS_PER_DAY; /** Milliseconds in a typical day (ISO). Due to time zone offset changes, the * number of milliseconds per day can vary. */ public static final int MILLIS_PER_DAY = MILLIS_PER_HOUR * HOURS_PER_DAY; /** Days in one week (7) (ISO) */ public static final int DAYS_PER_WEEK = 7; /** Hours in a typical week. Due to time zone offset changes, the number of * hours per week can vary. */ public static final int HOURS_PER_WEEK = HOURS_PER_DAY * DAYS_PER_WEEK; /** Minutes in a typical week (ISO). Due to time zone offset changes, the number * of minutes per week can vary. */ public static final int MINUTES_PER_WEEK = MINUTES_PER_DAY * DAYS_PER_WEEK; /** Seconds in a typical week (ISO). Due to time zone offset changes, the number * of seconds per week can vary. */ public static final int SECONDS_PER_WEEK = SECONDS_PER_DAY * DAYS_PER_WEEK; /** Milliseconds in a typical week (ISO). Due to time zone offset changes, the * number of milliseconds per week can vary. */ public static final int MILLIS_PER_WEEK = MILLIS_PER_DAY * DAYS_PER_WEEK; /** * Restrictive constructor */ protected DateTimeConstants() { } }





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