Java Timestamp weekNumber(Timestamp stamp, TimeZone timeZone, Locale locale)

Description

week Number

License

Apache License

Declaration

public static int weekNumber(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 {
    /**// www.j  a v  a2 s.co  m
     * returns a week number in a year for a Timestamp input
     *
     * @param input
     *            Timestamp date
     * @return A int containing the week number
     */
    public static int weekNumber(Timestamp input) {
        return weekNumber(input, TimeZone.getDefault(), Locale.getDefault());
    }

    public static int weekNumber(Timestamp input, int startOfWeek) {
        Calendar calendar = Calendar.getInstance();
        calendar.setFirstDayOfWeek(startOfWeek);

        if (startOfWeek == Calendar.MONDAY) {
            calendar.setMinimalDaysInFirstWeek(4);
        } else if (startOfWeek == Calendar.SUNDAY) {
            calendar.setMinimalDaysInFirstWeek(3);
        }

        calendar.setTime(new java.util.Date(input.getTime()));
        return calendar.get(Calendar.WEEK_OF_YEAR);
    }

    public static int weekNumber(Timestamp stamp, TimeZone timeZone, Locale locale) {
        Calendar tempCal = toCalendar(stamp, timeZone, locale);
        return tempCal.get(Calendar.WEEK_OF_YEAR);
    }

    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. truncateFractionalSeconds(Timestamp timestamp)
2. truncateTimestamp(Timestamp timestamp, String period)
3. truncNanos(Timestamp timestamp)
4. unformattedFromTimestamp(java.sql.Timestamp t)
5. utcToTimestamp(String utcTimestamp)
6. writeTimestamp(ByteBuffer logBuf, Timestamp time)
7. writeTimestamp(Timestamp stamp, ObjectOutput out, long nullFlag)