Java Day Add addDaysToDate(String s, int day, String format)

Description

return add day to date object with user defined format.

License

Open Source License

Parameter

Parameter	Description
s	input date
day	date value
format	date format

Exception

Parameter	Description
ParseException	error info

Return

Date addDAys result

Declaration

public static Date addDaysToDate(String s, int day, String format) throws ParseException 

Method Source Code

//package com.java2s;

import java.text.ParseException;
import java.text.SimpleDateFormat;

import java.util.Date;
import java.util.Locale;

public class Main {
    /**//from w  w  w . j a va  2s  .  c  om
     * return add day to date object with system defined format.
     * @param s       input date (yyyyMMdd)
     * @param day     date value
     * @return Date addDays result
     * @throws ParseException error info
     */
    public static Date addDaysToDate(String s, int day) throws ParseException {
        return addDaysToDate(s, day, "yyyyMMdd");
    }

    /**
     * return add day to date object with user defined format.
     * @param s     input date
     * @param day   date value
     * @param format date format
     * @return Date addDAys result
     * @throws ParseException       error info
     */
    public static Date addDaysToDate(String s, int day, String format) throws ParseException {
        Date date = check(s, format);
        return addDaysToDate(date, day);
    }

    /**
     * return add day to date object
     * @param date input date
     * @param day  date value
     * @return
     */
    public static Date addDaysToDate(Date date, int day) {
        date.setTime(date.getTime() + ((long) day * 1000 * 60 * 60 * 24));
        return date;
    }

    /**
     *
     * @param s   date string you want to check.
     * @param format string representation of the date format. For example, "yyyy-MM-dd".
     * @return  date Date
     * @throws ParseException error info
     */
    public static Date check(String s, String format) throws ParseException {
        if (s == null)
            throw new ParseException("date string to check is null", 0);
        if (format == null)
            throw new ParseException("format string to check date is null", 0);

        SimpleDateFormat formatter = new SimpleDateFormat(format, Locale.KOREA);
        Date date = null;
        try {
            date = formatter.parse(s);
        } catch (ParseException e) {
            throw new ParseException(" wrong date:\"" + s + "\" with format \"" + format + "\"", 0);
        }

        if (!formatter.format(date).equals(s))
            throw new ParseException("Out of bound date:\"" + s + "\" with format \"" + format + "\"", 0);
        return date;
    }
}

Related

1. addDaysDate(final java.util.Date date1, final int nbdays)
2. addDaysOnDate(final Date date, final int numberOfDays)
3. addDaysToDate(Date date, int numDays)
4. addDaysToDate(Date date, int value)
5. addDaysToDate(final Date d, final int days)
6. addDayString5(Date date, int day)
7. addDayToString(String strDate, int days)
8. addOneDay(String strDate)
9. addOneDayForamt(String date, String format, Integer addDate)