獲取當月在當天之前的工作日和雙休日

                               獲取當月在當天之前的工作日和雙休日

package com.day;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;

public class working {
	public static void main(String[] args) {
		ArrayList<String> workingDay = new ArrayList<String>();
		ArrayList<String> weekendBreak = new ArrayList<String>();
		Calendar calendar = Calendar.getInstance();
		int year = calendar.get(Calendar.YEAR);
		int month = calendar.get(Calendar.MONTH) + 1;
		int a = calendar.get(Calendar.DAY_OF_MONTH);
		for (int i = 1; i < a; i++) {
			String day = year + "-" + month + "-" + i;
			boolean flag = IsWorkingday(day);
			if (flag) {
				weekendBreak.add(day);
			} else {
				workingDay.add(day);
			}
		}
		System.out.println("雙休日");
		for (String weekendbreakDay : weekendBreak) {
			System.out.println(weekendbreakDay + "雙休日");
		}
		System.out.println("工作日");
		for (String workingday : workingDay) {
			System.out.println(workingday + "工作日");
		}
	}

	public static boolean IsWorkingday(String day) {
		DateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");
		String Date = day;
		Date date = null;
		try {
			date = simpleDateFormat.parse(Date);
		} catch (ParseException e) {
			e.printStackTrace();
		}
		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;
	}

}