Java Day Of Year dayOfYear(int year, int month, int date)

Description

the day of the year in [0-365] of the given date.

License

Apache License

Declaration

public static int dayOfYear(int year, int month, int date) 

Method Source Code

//package com.java2s;
/*//from w  ww  .  j  a va  2s . c  o  m
 * Copyright (C) 2006 Google Inc.
 *
 * 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.
 * All Rights Reserved.
 */

public class Main {
    private static int[] MONTH_START_TO_DOY = new int[12];

    /** the day of the year in [0-365] of the given date. */
    public static int dayOfYear(int year, int month, int date) {
        int leapAdjust = month > 2 && isLeapYear(year) ? 1 : 0;
        return MONTH_START_TO_DOY[month - 1] + leapAdjust + date - 1;
    }

    public static boolean isLeapYear(int year) {
        return (year % 4 == 0) && ((year % 100 != 0) || (year % 400 == 0));
    }
}

Related

1. currentYearMonthDay()
2. dateOfYearBetween(final int month, final int dayOfMonth, final int fromMonth, final int fromDayOfMonth, final int toMonth, final int toDayOfMonth)
3. dayOfYear(final int year, final int month, final int day)
4. dayOfYear(int month, int day, int year)
5. dayOfYear(int year, int month, int day)
6. dayOfYear(int year, int month, int day)
7. daysInPriorYears(final int y)
8. daysInPriorYears(int yr)