Java tutorial
//package com.java2s; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; public class Main { public static String StandardFormatStr(String str) { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); try { Date d = sdf.parse(str); long timeStamp = d.getTime(); long curTime = System.currentTimeMillis() / (long) 1000; long time = curTime - timeStamp / 1000; return time / 60 + ""; } catch (ParseException e) { e.printStackTrace(); } return null; } public static String getTime(long timeStamp) { String time = null; SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); String date = sdf.format(timeStamp * 1000); String[] split = date.split("\\s"); if (split.length > 1) { time = split[1]; } return time; } }