Java Timestamp Field getYearStart(Timestamp stamp, TimeZone timeZone, Locale locale)

Description

get Year Start

License

Apache License

Declaration

public static Timestamp getYearStart(Timestamp stamp, TimeZone timeZone, Locale locale) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.sql.Timestamp;

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

import java.util.Locale;
import java.util.TimeZone;

public class Main {
    /**//from   w ww .  j av a2 s. c  o m
     * Return the date for the first day of the year
     *
     * @param stamp
     * @return java.sql.Timestamp
     */
    public static java.sql.Timestamp getYearStart(java.sql.Timestamp stamp) {
        return getYearStart(stamp, 0, 0, 0);
    }

    public static java.sql.Timestamp getYearStart(java.sql.Timestamp stamp, int daysLater) {
        return getYearStart(stamp, daysLater, 0, 0);
    }

    public static java.sql.Timestamp getYearStart(java.sql.Timestamp stamp, int daysLater, int yearsLater) {
        return getYearStart(stamp, daysLater, 0, yearsLater);
    }

    public static java.sql.Timestamp getYearStart(java.sql.Timestamp stamp, int daysLater, int monthsLater,
            int yearsLater) {
        return getYearStart(stamp, daysLater, monthsLater, yearsLater, TimeZone.getDefault(), Locale.getDefault());
    }

    public static java.sql.Timestamp getYearStart(java.sql.Timestamp stamp, Number daysLater, Number monthsLater,
            Number yearsLater) {
        return getYearStart(stamp, (daysLater == null ? 0 : daysLater.intValue()),
                (monthsLater == null ? 0 : monthsLater.intValue()),
                (yearsLater == null ? 0 : yearsLater.intValue()));
    }

    public static Timestamp getYearStart(Timestamp stamp, TimeZone timeZone, Locale locale) {
        return getYearStart(stamp, 0, 0, 0, timeZone, locale);
    }

    public static Timestamp getYearStart(Timestamp stamp, int daysLater, TimeZone timeZone, Locale locale) {
        return getYearStart(stamp, daysLater, 0, 0, timeZone, locale);
    }

    public static Timestamp getYearStart(Timestamp stamp, int daysLater, int yearsLater, TimeZone timeZone,
            Locale locale) {
        return getYearStart(stamp, daysLater, 0, yearsLater, timeZone, locale);
    }

    public static Timestamp getYearStart(Timestamp stamp, Number daysLater, Number monthsLater, Number yearsLater,
            TimeZone timeZone, Locale locale) {
        return getYearStart(stamp, (daysLater == null ? 0 : daysLater.intValue()),
                (monthsLater == null ? 0 : monthsLater.intValue()),
                (yearsLater == null ? 0 : yearsLater.intValue()), timeZone, locale);
    }

    public static Timestamp getYearStart(Timestamp stamp, int daysLater, int monthsLater, int yearsLater,
            TimeZone timeZone, Locale locale) {
        Calendar tempCal = toCalendar(stamp, timeZone, locale);
        tempCal.set(tempCal.get(Calendar.YEAR), Calendar.JANUARY, 1, 0, 0, 0);
        tempCal.add(Calendar.YEAR, yearsLater);
        tempCal.add(Calendar.MONTH, monthsLater);
        tempCal.add(Calendar.DAY_OF_MONTH, daysLater);
        Timestamp retStamp = new Timestamp(tempCal.getTimeInMillis());
        retStamp.setNanos(0);
        return retStamp;
    }

    public static java.util.Calendar toCalendar(java.sql.Timestamp stamp) {
        Calendar cal = Calendar.getInstance();
        if (stamp != null) {
            cal.setTimeInMillis(stamp.getTime());
        }
        return cal;
    }

    /**
     * Returns a Calendar object initialized to the specified date/time, time
     * zone, and locale.
     *
     * @param date
     *            date/time to use
     * @param timeZone
     * @param locale
     * @return Calendar object
     * @see java.util.Calendar
     */
    public static Calendar toCalendar(Date date, TimeZone timeZone, Locale locale) {
        Calendar cal = Calendar.getInstance(timeZone, locale);
        if (date != null) {
            cal.setTime(date);
        }
        return cal;
    }
}

Related

1. getSystemTimestamp()
2. getSystemTimestamp()
3. getWeekEnd(Timestamp stamp, TimeZone timeZone, Locale locale)
4. getWeekEnd(Timestamp stamp, TimeZone timeZone, Locale locale)
5. getWochentag(java.util.Locale locale, java.sql.Timestamp tDatum)