Here you can find the source of format(Date date)
public static String format(Date date)
//package com.java2s; import java.text.SimpleDateFormat; import java.util.*; public class Main { public static final String _DEFAULT1 = "yyyy-MM-dd HH:mm"; public static final String _DEFAULT4 = "yyyy-MM-dd"; public static String format(Date date) { return formatDate(date, _DEFAULT4); }/*w ww .j a v a2 s . c om*/ public static String formatDate(Date date) { return formatDate(date, _DEFAULT1); } public static String formatDate(Date date, String style) { return new SimpleDateFormat(style).format(date); } }