Java Day of Work addWorkdays(Date date, int workdayOffset)

Description

Die Anzahl Arbeitstage (d.h.

License

Apache License

Parameter

Parameter	Description
date	Nie <code>null</code>
workdayOffset	Offset in Tagen (1=morgen)

Return

Nie null (Tagesdatum ohne

Declaration

public static Date addWorkdays(Date date, int workdayOffset) 

Method Source Code

//package com.java2s;
// Licensed under the Apache License, Version 2.0 (the "License");

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

public class Main {
    /**/*from   w  ww .  j av a2 s .c  om*/
     * Die Anzahl Arbeitstage (d.h. nicht Samstag und Sonntag) addieren.
     *
     * @param date Nie <code>null</code>
     * @param workdayOffset Offset in Tagen (1=morgen)
     * @return Nie <code>null</code> (Tagesdatum ohne
     */
    public static Date addWorkdays(Date date, int workdayOffset) {
        final Calendar cal = getCalendarInstance();
        cal.setTime(date);

        ensureWorkday(cal);
        for (int countdown = workdayOffset; countdown > 0; countdown--) {
            cal.add(Calendar.DAY_OF_YEAR, 1);
            ensureWorkday(cal);
        }

        final Date result = cal.getTime();
        return result;
    }

    /**
     * Locale?
     *
     * @return Eine neue Instanz.
     */
    private static Calendar getCalendarInstance() {
        final Calendar cal = Calendar.getInstance();
        return cal;
    }

    /**
     * Ensure workday.
     *
     * @param cal the cal
     */
    protected static void ensureWorkday(Calendar cal) {
        int dow = cal.get(Calendar.DAY_OF_WEEK);
        while (dow == Calendar.SATURDAY || dow == Calendar.SUNDAY) {
            cal.add(Calendar.DAY_OF_YEAR, 1);
            dow = cal.get(Calendar.DAY_OF_WEEK);
        }
    }
}

Related

1. addWorkingDays(Date start, int workingDays)
2. getRemainingWorkingMonth(Date taxdate)
3. getWorkDay(Date d1, Date d2, int[] freeDays)
4. isWorkDay(Date data)