add Months - Java java.util

Java examples for java.util:Month

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Description

add Months

Demo Code


//package com.java2s;

import java.text.SimpleDateFormat;

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

import java.util.StringTokenizer;

public class Main {
    public static void main(String[] argv) throws Exception {
        Date date = new Date();
        int months = 2;
        System.out.println(addMonths(date, months));
    }//w  ww.j  a  v  a2 s .c  om

    public static Date addMonths(Date date, int months) {
        Calendar cal = new GregorianCalendar();
        cal.setTime(date);
        cal.add(Calendar.MONTH, months);
        return cal.getTime();
    }

    public static String addMonths(String dateStr, int months) {
        Date date = getStrDateToDate(dateStr);
        date = addMonths(date, months);

        SimpleDateFormat formatter;
        formatter = new SimpleDateFormat("yyyy" + getDateSplit() + "MM"
                + getDateSplit() + "dd");
        String dateString = formatter.format(date);

        return dateString.trim();
    }

    public static Date getStrDateToDate(String dateStr) {
        String dateSplit = getDateSplit();
        if (dateSplit.equals("."))
            dateSplit = "\\.";
        StringTokenizer filter = new StringTokenizer(dateStr, dateSplit);
        int year = Integer.parseInt(filter.nextToken());
        int mon = Integer.parseInt(filter.nextToken()) - 1;
        int day = Integer.parseInt(filter.nextToken());

        Calendar cal = new GregorianCalendar(year, mon, day);
        return cal.getTime();
    }

    public static String getDateSplit() {
        return ".";
    }
}

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