Here you can find the source of formatToString(String format, long time)
public static String formatToString(String format, long time)
//package com.java2s; /*/*from w w w. j ava 2s . c om*/ * Copyright 2015-2016 RonCoo(http://www.roncoo.com) Group. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Date; public class Main { public static DateFormat dateFormat = null; public static String formatToString(String format, long time) { if (time == 0) { return ""; } return new SimpleDateFormat(format).format(new Date(time)); } public static String format(Date date, String format) { String result = ""; try { if (date != null) { dateFormat = new SimpleDateFormat(format); result = dateFormat.format(date); } } catch (Exception e) { } return result; } public static String format(Date date) { return format(date, "yyyy-MM-dd"); } }