【Java】取n工作日后的日期（仅排除周六周日）

import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.time.*;

import java.time.format.DateTimeFormatter;

import java.util.Calendar;

import java.util.Date;

public class HolidayUtils{

    private static SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

    private static Date getTomorrow(Date date){

        Calendar calendar = Calendar.getInstance();

        calendar.setTime(date);

        calendar.add(Calendar.DAY_OF_MONTH, +1);

        date = calendar.getTime();

        return date;

    }

    private static boolean isWeekend(String sdate) throws ParseException {

        Date date = sdf.parse(sdate);

        Calendar cal = Calendar.getInstance();

        cal.setTime(date);

        if(cal.get(Calendar.DAY_OF_WEEK) == Calendar.SATURDAY || cal.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY){

            return true;

        } else{

            return false;

        }

    }

    public static void main(String[] arg) throws ParseException{

        Date today = new Date();

        Date tomorrow = null;

        int delay = 1;

        int num = 3;//业务需要的n个工作日

        while(delay <= num){

            tomorrow = getTomorrow(today);

            if (!isWeekend(sdf.format(tomorrow))){

                delay++;

            }

            today = tomorrow;

        }

        LocalDateTime fDate = Instant.ofEpochMilli(today.getTime()).atZone(ZoneId.systemDefault()).toLocalDateTime();

        //或LocalDateTime fDate = today.toInstant().atZone(ZoneId.systemDefault()).toLocalDateTime()

        String simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd").format(today);

        System.out.println(simpleDateFormat);

    }

}
巴特西

【Java】取n工作日后的日期（仅排除周六周日）

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