Android Weekend Count countWeekend(String startDate, String endDate)

Description

count Weekend

License

Apache License

Declaration

public static int countWeekend(String startDate, String endDate) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.text.ParseException;

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

public class Main {

    public static int countWeekend(String startDate, String endDate) {
        int result = 0;
        Date sdate = null;//from  w w  w .  ja  va 2s  .  co m
        Date edate = null;
        if (startDate.indexOf("/") > 0 && endDate.indexOf("/") > 0) {
            sdate = getDateObj(startDate, "/"); 
            edate = getDateObj(endDate, "/");
        }
        if (startDate.indexOf("-") > 0 && endDate.indexOf("-") > 0) {
            sdate = getDateObj(startDate, "-"); 
            edate = getDateObj(endDate, "-");
        }

        int sumDays = Math.abs(getDiffDays(startDate, endDate));
        int dayOfWeek = 0;
        for (int i = 0; i <= sumDays; i++) {
            dayOfWeek = getDayOfWeek(getDateAdd(sdate, i)); 
            if (dayOfWeek == 1 || dayOfWeek == 7) { 
                result++;
            }
        }
        return result;
    }

    public static Date getDateObj(int year, int month, int day) {
        Calendar c = new GregorianCalendar();
        c.set(year, month - 1, day);
        return c.getTime();
    }

    public static Date getDateObj(String argsDate, String split) {
        String[] temp = argsDate.split(split);
        int year = new Integer(temp[0]).intValue();
        int month = new Integer(temp[1]).intValue();
        int day = new Integer(temp[2]).intValue();
        return getDateObj(year, month, day);
    }

    public static Date getDateObj() {
        Calendar c = new GregorianCalendar();
        return c.getTime();
    }

    public static int getDiffDays(String startDate, String endDate) {
        long diff = 0;
        SimpleDateFormat ft = null;
        if (startDate.indexOf("/") > 0 && endDate.indexOf("/") > 0) {
            ft = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
        }
        if (startDate.indexOf("-") > 0 && endDate.indexOf("-") > 0) {
            ft = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        }
        try {
            Date sDate = ft.parse(startDate + " 00:00:00");
            Date eDate = ft.parse(endDate + " 00:00:00");
            diff = eDate.getTime() - sDate.getTime();
            diff = diff / 86400000;// 1000*60*60*24;
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return (int) diff;

    }

    public static int getDayOfWeek(String year, String month, String day) {
        Calendar cal = new GregorianCalendar(new Integer(year).intValue(),
                new Integer(month).intValue() - 1,
                new Integer(day).intValue());
        return cal.get(Calendar.DAY_OF_WEEK);
    }

    public static int getDayOfWeek(String date) {
        String[] temp = null;
        if (date.indexOf("/") > 0) {
            temp = date.split("/");
        }
        if (date.indexOf("-") > 0) {
            temp = date.split("-");
        }
        return getDayOfWeek(temp[0], temp[1], temp[2]);
    }

    public static int getDayOfWeek(Date date) {
        Calendar cal = new GregorianCalendar();
        cal.setTime(date);
        return cal.get(Calendar.DAY_OF_WEEK);
    }

    public static Date getDateAdd(Date date, int amount) {
        Calendar cal = new GregorianCalendar();
        cal.setTime(date);
        cal.add(GregorianCalendar.DATE, amount);
        return cal.getTime();
    }
}

Related

1. countWeekend(String startDate, String endDate)