Java Date Compare compareDate(Date sourceDate, Date targetDate)

Description

compare Date

License

Open Source License

Declaration

public static long compareDate(Date sourceDate, Date targetDate) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

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

public class Main {
    public static long compareDate(Date sourceDate, Date targetDate) {
        long ret = -1;

        if (sourceDate == null && targetDate == null) {
            ret = 0;//from w  w  w. jav a 2 s  . c  om
        } else if (sourceDate == null) {
            ret = -1;
        } else if (targetDate == null) {
            ret = 1;
        } else {
            if (sourceDate.getYear() > targetDate.getYear()) {
                ret = 1;
            } else if (sourceDate.getYear() < targetDate.getYear()) {
                ret = -1;
            } else {
                if (sourceDate.getMonth() > targetDate.getMonth()) {
                    ret = 1;
                } else if (sourceDate.getMonth() < targetDate.getMonth()) {
                    ret = -1;
                } else {
                    if (sourceDate.getDate() > targetDate.getDate()) {
                        ret = 1;
                    } else if (sourceDate.getDate() < targetDate.getDate()) {
                        ret = -1;
                    } else {
                        ret = 0;
                    }
                }
            }
        }
        return ret;
    }

    public static int getYear() {
        Calendar calendar = new GregorianCalendar();
        Date trialTime = new Date();
        calendar.setTime(trialTime);
        return calendar.get(Calendar.YEAR);
    }

    public static int getYear(Date date) {
        Calendar calendar = new GregorianCalendar();
        calendar.setTime(date);
        return calendar.get(Calendar.YEAR);
    }

    public static int getMonth() {
        Calendar calendar = new GregorianCalendar();
        Date trialTime = new Date();
        calendar.setTime(trialTime);
        return calendar.get(Calendar.MONTH) + 1;
    }

    public static int getMonth(Date date) {
        Calendar calendar = new GregorianCalendar();
        calendar.setTime(date);
        return calendar.get(Calendar.MONTH) + 1;
    }
}

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