Here you can find the source of getTime(String sDateTime, String eDateTime)
public static int getTime(String sDateTime, String eDateTime) throws ParseException
//package com.java2s; import java.text.*; public class Main { public static int getTime(String sDateTime, String eDateTime) throws ParseException { SimpleDateFormat myFormatter = new SimpleDateFormat("yyyy-MM-dd"); java.util.Date ssDateTime = myFormatter.parse(sDateTime); java.util.Date eeDateTime = myFormatter.parse(eDateTime); long l = (eeDateTime.getTime() - ssDateTime.getTime()); long day = l / (24 * 60 * 60 * 1000); return (int) day; }/* w w w. j a v a 2s .c om*/ }