Here you can find the source of hhmmssToMillis(String text)
public static long hhmmssToMillis(String text)
//package com.java2s; /*//from w w w . j a va 2 s. com * #%L * Timbuctoo core * ======= * Copyright (C) 2012 - 2015 Huygens ING * ======= * 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/gpl-3.0.html>. * #L% */ public class Main { public static long hhmmssToMillis(String text) { if (text.matches("^\\d\\d:\\d\\d:\\d\\d$")) { int hours = Integer.parseInt(text.substring(0, 2)); int minutes = Integer.parseInt(text.substring(3, 5)); int seconds = Integer.parseInt(text.substring(6, 8)); return (((hours * 60L + minutes) * 60L) + seconds) * 1000L; } return -1; } }