Java Year From getYearStart(int year)

Description

get Year Start

License

Open Source License

Declaration

public static Date getYearStart(int year) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright 2014 United States Government as represented by the
 * Administrator of the National Aeronautics and Space Administration.
 * All Rights Reserved.// ww  w.  j  a v a 2s  . c  o  m
 * 
 * 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.
 ******************************************************************************/

import java.util.Calendar;
import java.util.Date;

import java.util.TimeZone;

public class Main {
    private static final TimeZone GMT_TIME_ZONE = TimeZone.getTimeZone("GMT");

    public static Date getYearStart(int year) {
        Calendar c = Calendar.getInstance(GMT_TIME_ZONE);
        c.set(Calendar.YEAR, year);
        c.set(Calendar.DAY_OF_YEAR, 1);
        c.set(Calendar.HOUR_OF_DAY, 0);
        c.set(Calendar.MINUTE, 0);
        c.set(Calendar.SECOND, 0);
        c.set(Calendar.MILLISECOND, 0);
        return c.getTime();
    }

    public static Date getYearStart(Date date) {
        Calendar c = Calendar.getInstance(GMT_TIME_ZONE);
        c.setTime(date);
        c.set(Calendar.DAY_OF_YEAR, 1);
        c.set(Calendar.HOUR_OF_DAY, 0);
        c.set(Calendar.MINUTE, 0);
        c.set(Calendar.SECOND, 0);
        c.set(Calendar.MILLISECOND, 0);
        return c.getTime();
    }
}

Related

1. getYearOfDayMark(int day)
2. getYearOfPreYearWeek(int year, int week)
3. getYearOfTime(Long time)
4. getYears(Integer limit)
5. getyears(List numberList)
6. getYearStart(long ts)
7. getYearStartTime()
8. isInYear(String dateStr, int year)
9. setYears(Date date, int amount)