Java tutorial
//package com.java2s; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; import java.util.GregorianCalendar; public class Main { public static String getDateByAddHour(String datetime, int minute) { String returnTime = null; Calendar cal = new GregorianCalendar(); SimpleDateFormat ft = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date date; try { date = ft.parse(datetime); cal.setTime(date); cal.add(GregorianCalendar.MINUTE, minute); returnTime = getFormatDateTime(cal.getTime(), "yyyy-MM-dd HH:mm:ss"); } catch (ParseException e) { e.printStackTrace(); } return returnTime; } public static String getFormatDateTime(Date date, String format) { SimpleDateFormat sdf = new SimpleDateFormat(format); return sdf.format(date); } }