Here you can find the source of toString(Date time, String format)
public static String toString(Date time, String format)
//package com.java2s; /*//from w w w.j av a 2 s . com * APDPlat - Application Product Development Platform * Copyright (c) 2013, ??????, yang-shangchuan@qq.com * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ import java.text.SimpleDateFormat; import java.util.Date; public class Main { public static String toString(long time, String format) { SimpleDateFormat simpleDateFormat = new SimpleDateFormat(format); return simpleDateFormat.format(new Date(time)); } public static String toString(Date time, String format) { SimpleDateFormat simpleDateFormat = new SimpleDateFormat(format); return simpleDateFormat.format(time); } public static String toString(long time) { SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); return simpleDateFormat.format(new Date(time)); } public static String toString(Date time) { SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); return simpleDateFormat.format(time); } }