Here you can find the source of getTimestamp()
private static String getTimestamp()
//package com.java2s; /* This file is part of VoltDB. * Copyright (C) 2008-2015 VoltDB Inc./* w w w . ja va2s.c om*/ * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. */ import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.GregorianCalendar; import java.util.Random; public class Main { private final static Random random = new Random(7); private final static Calendar calendar = new GregorianCalendar(); private final static SimpleDateFormat simpleDate = new SimpleDateFormat("dd/MMM/yyyy:HH:mm:ss Z"); private static String getTimestamp() { calendar.add(Calendar.SECOND, random.nextInt(3)); String result = simpleDate.format(calendar.getTime()); return "[" + result + "]"; } }