Here you can find the source of today()
public static Date today()
//package com.java2s; import java.util.Calendar; import java.util.Date; public class Main { public static Date today() { return resetTime(new Date()); }/*ww w . j a va 2 s . c o m*/ public static Date resetTime(Date date) { Calendar cal = Calendar.getInstance(); cal.setTime(date); cal.set(Calendar.HOUR_OF_DAY, 0); cal.set(Calendar.MINUTE, 0); cal.set(Calendar.SECOND, 0); cal.set(Calendar.MILLISECOND, 0); return cal.getTime(); } }