Android Date Compare compareDate(Date date1, Date date2, int what)

Description

compare Date

Declaration

public static int compareDate(Date date1, Date date2, int what) 

Method Source Code

//package com.java2s;

import java.sql.Timestamp;
import java.text.DateFormat;
import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.util.Calendar;
import java.util.Date;

public class Main {
    public static int compareDate(String date1, String date2, int what)
            throws ParseException {
        DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
        Date objDate1 = df.parse(date1);
        Date objDate2 = df.parse(date2);
        return compareDate(objDate1, objDate2, what);
    }//from   ww w  .  j a v  a 2 s  .c om

    public static int compareDate(Date date1, Date date2, int what) {
        Calendar objCalendar1 = Calendar.getInstance();
        objCalendar1.setTime(date1);
        Calendar objCalendar2 = Calendar.getInstance();
        objCalendar2.setTime(date2);
        int iResult = compare(objCalendar1, objCalendar2, what);
        if (iResult > 0) {
            return 1;
        } else if (iResult < 0) {
            return -1;
        } else {
            return 0;
        }
    }

    public static int compare(Calendar c1, Calendar c2, int what) {
        int number = 0;
        switch (what) {
        case Calendar.YEAR:
            number = c1.get(Calendar.YEAR) - c2.get(Calendar.YEAR);
            break;
        case Calendar.MONTH:
            int years = compare(c1, c2, Calendar.YEAR);
            number = 12 * years
                    + (c1.get(Calendar.MONTH) - c2.get(Calendar.MONTH));
            break;
        case Calendar.DATE:
            number = (int) ((c1.getTimeInMillis() - c2.getTimeInMillis()) / (1000 * 60 * 60 * 24));
            break;
        default:
            number = (int) ((c1.getTimeInMillis() - c2.getTimeInMillis()) / (1000 * 60 * 60 * 24));
            break;
        }
        return number;
    }

    public static int compare(Timestamp t1, Timestamp t2, int what) {

        Calendar c1 = Calendar.getInstance();
        c1.setTime(t1);

        Calendar c2 = Calendar.getInstance();
        c2.setTime(t2);

        int number = 0;
        switch (what) {
        case Calendar.YEAR:
            number = c1.get(Calendar.YEAR) - c2.get(Calendar.YEAR);
            break;
        case Calendar.MONTH:
            int years = compare(c1, c2, Calendar.YEAR);
            number = 12 * years
                    + (c1.get(Calendar.MONTH) - c2.get(Calendar.MONTH));
            break;
        case Calendar.DATE:
            number = (int) ((c1.getTimeInMillis() - c2.getTimeInMillis()) / (1000 * 60 * 60 * 24));
            break;
        default:
            number = (int) ((c1.getTimeInMillis() - c2.getTimeInMillis()) / (1000 * 60 * 60 * 24));
            break;
        }
        return number;
    }
}

Related

1. compareCurrentDate(Date currentDate)
2. compareDate(Date date1, Date date2)
3. compareDate(String date1, String date2, int what)
4. dateAfterDate(Date date, long days)
5. dateBeforeDate(Date date, long days)
6. isSameDay(Date dateSource, Date dateDesti)