Here you can find the source of timestampToString(long time)
public static String timestampToString(long time)
//package com.java2s; /*//w w w . j av a2 s. com * Punishments * Copyright (C) 2014 Puzl Inc. * * 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 { private static final SimpleDateFormat DATE_FORMAT = new SimpleDateFormat("MM/dd/yyyy HH:mm:ss"); public static String timestampToString(long time) { return time != -1 ? "until " + formatTimestamp(time) : "forever"; } public static String formatTimestamp(long time) { return DATE_FORMAT.format(new Date(time)); } }