Java tutorial
//package com.java2s; //License from project: Apache License import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Locale; public class Main { public static String getCurrentDateByOffset(String format, int calendarField, int offset) { String mDateTime = null; try { SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat(format, Locale.CHINA); Calendar c = Calendar.getInstance(); c.add(calendarField, offset); mDateTime = mSimpleDateFormat.format(c.getTime()); } catch (Exception e) { e.printStackTrace(); } return mDateTime; } }