Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Open Source License 

import java.text.DecimalFormat;

import java.util.concurrent.TimeUnit;

public class Main {
    public static String getReadableSpeed(long downloaded, long timespend, TimeUnit timeUnit) {
        long span = timeUnit.toSeconds(timespend);
        if (timespend * span == 0) {
            return "0";
        }
        return getReadableSize(downloaded / span, true) + "/s";
    }

    public static String getReadableSize(long bytes, boolean si) {
        int unit = si ? 1000 : 1024;
        if (bytes < unit)
            return bytes + " B";
        int exp = (int) (Math.log(bytes) / Math.log(unit));
        String pre = (si ? "kMGTPE" : "KMGTPE").charAt(exp - 1) + (si ? "" : "i");
        return String.format("%.1f %sB", bytes / Math.pow(unit, exp), pre);
    }

    public static String getReadableSize(long bytes) {
        if (bytes <= 0)
            return "0";
        final String[] units = new String[] { "B", "KB", "MB", "GB", "TB" };
        int digitGroups = (int) (Math.log10(bytes) / Math.log10(1024));
        return new DecimalFormat("#,##0.#").format(bytes / Math.pow(1024, digitGroups)) + " " + units[digitGroups];
    }
}