Java tutorial
//package com.java2s; import java.util.Calendar; import java.util.Date; public class Main { public static int getHourFromDate(Date date) { Calendar cal = dateToCalendar(date); return cal.get(Calendar.HOUR_OF_DAY); } public static Calendar dateToCalendar(Date date) { Calendar cal = Calendar.getInstance(); cal.setTime(date); return cal; } }