Java Timestamp Field getMonthStart(java.sql.Timestamp stamp)

Description

Return the date for the first day of the month

License

Apache License

Parameter

Parameter	Description
stamp	a parameter

Return

java.sql.Timestamp

Declaration

public static java.sql.Timestamp getMonthStart(java.sql.Timestamp stamp) 

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 w  w  .  j  av  a2  s  .  com*/
     * Return the date for the first day of the month
     *
     * @param stamp
     * @return java.sql.Timestamp
     */
    public static java.sql.Timestamp getMonthStart(java.sql.Timestamp stamp) {
        return getMonthStart(stamp, 0, 0);
    }

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

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

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

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

    public static Timestamp getMonthStart(Timestamp stamp, int daysLater, int monthsLater, TimeZone timeZone,
            Locale locale) {
        Calendar tempCal = toCalendar(stamp, timeZone, locale);
        tempCal.set(tempCal.get(Calendar.YEAR), tempCal.get(Calendar.MONTH), 1, 0, 0, 0);
        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. getLocalTime(final Timestamp timestamp)
2. getMessageTimestamp(int id)
3. getMillTimestamp()
4. getMonthEnd(Timestamp stamp, TimeZone timeZone, Locale locale)
5. getMonthLastDay(Timestamp day)
6. getMonthStartTimestamp(Date date)
7. getNanos(Timestamp timestamp)
8. getNanoString(Timestamp timestamp, boolean full, char nanoSep)
9. getNbHours(Timestamp dateA, Timestamp dateB)