Here you can find the source of formatDuration(Duration duration, boolean inProgress)
public static String formatDuration(Duration duration, boolean inProgress)
//package com.java2s; /*/*from w ww . ja v a 2 s .c o m*/ * Copyright 2015-2016 Todd Kulesza <todd@dropline.net>. * * This file is part of Archivo. * * Archivo 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. * * Archivo 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 Archivo. If not, see <http://www.gnu.org/licenses/>. */ import java.time.Duration; public class Main { public static String formatDuration(Duration duration, boolean inProgress) { int hours = (int) duration.toHours(); int minutes = (int) duration.toMinutes() - (hours * 60); int seconds = (int) (duration.getSeconds() % 60); // Round so that we're only displaying hours and minutes if (seconds >= 30) { minutes++; } if (minutes >= 60) { hours++; minutes = 0; } StringBuilder sb = new StringBuilder(); if (hours > 0) { sb.append(String.format("%d:%02d hour", hours, minutes)); if (hours > 1 || minutes > 0) sb.append("s"); } else { sb.append(String.format("%d minute", minutes)); if (minutes != 1) { sb.append("s"); } } if (inProgress) sb.append(" (still recording)"); return sb.toString(); } }