Java Date to Month getMondayDate(String date)

Description

get Monday Date

License

Open Source License

Declaration

public static String getMondayDate(String date) 

Method Source Code

//package com.java2s;
import java.util.Calendar;

public class Main {
    public static String getMondayDate(String date) {
        String startDate;/*from   w  w w.  j  a v  a  2 s . c o m*/

        int year = getYear(date);
        int month = getMonth(date);
        int day = getDate(date);

        int curDayOfWeek = getDayOfWeek(year, month, day);

        int startTmp = 2 - curDayOfWeek;

        if (startTmp == 0)
            return date;

        if (startTmp > 0) {
            startTmp = startTmp - 7;
        }

        Calendar tmpCalendar = Calendar.getInstance();

        tmpCalendar.set(year, month - 1, day);

        tmpCalendar.add(Calendar.DATE, startTmp);

        startDate = Integer.toString(tmpCalendar.get(Calendar.YEAR));

        if ((tmpCalendar.get(Calendar.MONTH) + 1) < 10)
            startDate += "0";

        startDate += Integer.toString((tmpCalendar.get(Calendar.MONTH)) + 1);

        if (tmpCalendar.get(Calendar.DATE) < 10)
            startDate += "0";

        startDate += Integer.toString(tmpCalendar.get(Calendar.DATE));

        return startDate;
    }

    public static int getYear(String date) {
        return Integer.parseInt(date.substring(0, 4));
    }

    public static int getMonth(String date) {
        return Integer.parseInt(date.substring(4, 6));
    }

    public static int getDate(String date) {
        return Integer.parseInt(date.substring(6, 8));
    }

    public static int getDayOfWeek(int _year, int _month, int _day) {
        int year, month, date;

        Calendar cal = Calendar.getInstance();
        cal.set(_year, _month - 1, _day);

        return cal.get(Calendar.DAY_OF_WEEK);
    }
}

Related

1. getMonday(Date date)
2. getMontByDate(Date curDate)
3. getMonth(Date aDate)
4. getMonth(Date d)
5. getMonth(Date d)