Compare both dates and uses only year and month for comparing. - Java java.util

Java examples for java.util:Month

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Description

Compare both dates and uses only year and month for comparing.

Demo Code


//package com.java2s;

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

public class Main {
    public static void main(String[] argv) throws Exception {
        Date date1 = new Date();
        Date date2 = new Date();
        System.out.println(compareMonthYear(date1, date2));
    }//from w  w w  .ja  v a 2s . com

    /**
     * Compare both dates and uses only year and month for comparing.
     *
     * @param date1
     *            must not be <code>null</code>
     * @param date2
     *            must not be <code>null</code>
     * @return <code>0</code>, if both dates (using year and month) are equals;
     *         <code>1</code>, if <code>date1</code> is later than
     *         <code>date2</code>; else <code>-1</code>
     */
    public static int compareMonthYear(Date date1, Date date2) {
        final Calendar cal = Calendar.getInstance();

        cal.setTime(date1);
        final int month1 = cal.get(Calendar.MONTH);
        final int year1 = cal.get(Calendar.YEAR);

        cal.setTime(date2);
        final int month2 = cal.get(Calendar.MONTH);
        final int year2 = cal.get(Calendar.YEAR);

        return year1 < year2 ? -1 : (year1 > year2 ? 1
                : (month1 < month2 ? -1 : (month1 > month2 ? 1 : 0)));
    }
}

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