How can I add business days to the current date in Java?

Question

How can I add business days to the current date in Java?

public Calendar addBusinessDate(Calendar cal, int days) {
//
// code goes over here
//
}
         


        

Answer 1

//supports negative numbers too.

private Calendar addBusinessDay(final Calendar cal, final Integer numBusinessDays)
{
    if (cal == null || numBusinessDays == null || numBusinessDays.intValue() == 0)
    {
        return cal;
    }
    final int numDays = Math.abs(numBusinessDays.intValue());
    final int dateAddition = numBusinessDays.intValue() < 0 ? -1 : 1;//if numBusinessDays is negative
    int businessDayCount = 0;
    while (businessDayCount < numDays)
    {
        cal.add(Calendar.DATE, dateAddition);

        //check weekend
        if (cal.get(Calendar.DAY_OF_WEEK) == Calendar.SATURDAY || cal.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY)
        {
            continue;//adds another day
        }

        //check holiday
        if (isHoliday(cal))//implement isHoliday yourself
        {
            continue;//adds another day
        }

        businessDayCount++;
    }
    return cal;
}