Here you can find the source of convertTime(long value)
static public String convertTime(long value)
//package com.java2s; /**//from w ww. j a v a 2s . co m * Copyright 2010-2013 The Kuali Foundation * * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php * * 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.MessageFormat; public class Main { static final protected double[] timeFactors = { 1000000, 1000, 60, 60, 24 }; static final protected String[] timeUnites = { "ns", "ms", "s", "m", "h", "d" }; static public String convertTime(long value) { return convert(value, timeFactors, timeUnites); } static public String convert(long value, double[] factors, String[] unites) { long sign = value == 0 ? 1 : value / Math.abs(value); int i = 0; double tmp = Math.abs(value); while (i < factors.length && i < unites.length && tmp > factors[i]) { tmp = tmp / factors[i++]; } tmp *= sign; String result; result = MessageFormat.format("{0,number,0.###}{1}", tmp, unites[i]); return result; } }