Here you can find the source of getSpecifiedDayAfter(Date date, int num)
public static Date getSpecifiedDayAfter(Date date, int num)
//package com.java2s; //License from project: Apache License import java.util.Calendar; import java.util.Date; public class Main { public static Date getSpecifiedDayAfter(Date date, int num) { Calendar c = Calendar.getInstance(); c.setTime(date);//w ww. ja va 2 s .c om int day = c.get(Calendar.DATE); c.set(Calendar.DATE, day + num); return c.getTime(); } }