Here you can find the source of nextMonths(int diff)
public static Date nextMonths(int diff)
//package com.java2s; //License from project: Apache License import java.util.*; public class Main { public static Date nextMonths(int diff) { return add(new Date(), Calendar.MONTH, diff); }// w w w . java2s. c o m public static Date nextMonths(Date date, int diff) { return add(date, Calendar.MONTH, diff); } /** * @since 2008-01-02 */ public static Date add(Date date, int field, int diff) { Calendar c = getCalendar(date); c.add(field, diff); return c.getTime(); } /** * @since 2008-01-02 */ public static Date add(int field, int diff) { return add(new Date(), field, diff); } /** * @since 2008-01-02 */ public static Calendar getCalendar(long millis) { Calendar c = Calendar.getInstance(); c.setTimeInMillis(millis); return c; } /** * @since 2008-01-02 */ public static Calendar getCalendar(Date date) { Calendar c = Calendar.getInstance(); c.setTime(date); return c; } }