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

This algorithm calculates the next business date for a given date (business days are from monday to friday in my country), you can adapt it to iterate the number of days you need to add.

public Calendar nextBusinessDate(Calendar cal) {

    List holidays = ********
    // Here get list of holidays from DB or some other service...

    GregorianCalendar calCp = new GregorianCalendar();
    calCp.setTime(cal.getTime());
    calCp.add(Calendar.DAY_OF_MONTH, 1);

    boolean isSaturday = (calCp.get(Calendar.DAY_OF_WEEK) == Calendar.SATURDAY);
    boolean isSunday = (calCp.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY);
    boolean isHoliday = holidays.contains(calCp);

    while (isSaturday || isSunday || isHoliday) {
      if (isSaturday) {
          calCp.add(Calendar.DAY_OF_MONTH, +2); // is saturday, make it monday
        } else {
        if (isSunday) {
            calCp.add(Calendar.DAY_OF_MONTH, +1); // is sunday, make it monday
        } else {
            if (isHoliday) {
                 calCp.add(Calendar.DAY_OF_MONTH, +1); // is holiday, make it next day
               }
            }
        }
      calCp = new GregorianCalendar();
      calCp.setTime(cal.getTime());
      isSaturday = (calCp.get(Calendar.DAY_OF_WEEK) == Calendar.SATURDAY);
      isSunday = (calCp.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY);
    isHoliday = holidays.contains(calCp);
    } // end while

    return calCp;
}