Here you can find the source of formatSizeInBytes(int size)
public static String formatSizeInBytes(int size)
//package com.java2s; /*//from w w w .j a v a 2 s.c o m * Robonobo Common Utils * Copyright (C) 2008 Will Morton (macavity@well.com) & Ray Hilton (ray@wirestorm.net) * 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 2 * 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, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ public class Main { public static String[] UNITS = { "", "K", "M", "G", "T", "P", "E" }; private static double[] UNIT_THRESH = { 1d, 1024d, 1048576d, 1073741824d, 1099511627776d, 1125899906842624d, 1152921504606846976d }; public static String formatSizeInBytes(int size) { if (size < 1) return size + "B"; for (int i = 0; i < (UNITS.length - 1); i++) { if (size < UNIT_THRESH[i + 1]) return (int) (size / UNIT_THRESH[i]) + UNITS[i] + "B"; } return size + "B"; } }