Java tutorial
//package com.java2s; import java.util.Calendar; public class Main { public static Calendar getDate(Calendar calendar) { Calendar cal = (Calendar) calendar.clone(); cal.set(Calendar.HOUR_OF_DAY, 0); cal.set(Calendar.MINUTE, 0); cal.set(Calendar.SECOND, 0); cal.set(Calendar.MILLISECOND, 0); return cal; } }