Java tutorial
//package com.java2s; //License from project: GNU General Public License public class Main { public static String formatSpeed(float speed) { if (speed < 1024) { return String.format("%.2f B/s", speed); } else if (speed < 1024 * 1024) { return String.format("%.2f kB/s", speed / 1024); } else if (speed < 1024 * 1024 * 1024) { return String.format("%.2f MB/s", speed / 1024 / 1024); } else { return String.format("%.2f GB/s", speed / 1024 / 1024 / 1024); } } }