Java Long Number Format format(long bytes)

Description

Depending on the size, return a size formatted in bytes, K, M, G or T bytes.

License

Apache License

Parameter

Parameter	Description
bytes	size in bytes

Return

human readable value

Declaration

public static String format(long bytes) 

Method Source Code

//package com.java2s;
/**// w  w w.  j  av a2s .  c om
 * Copyright (C) 2011 / cube-team <https://cube.forge.osor.eu>
 *
 * Licensed under the Apache License, Version 2.0 (the "License").
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

public class Main {
    private static final double KILO = 1024;
    private static final double MEGA = KILO * 1024;
    private static final double GIGA = MEGA * 1000;
    private static final double TERA = GIGA * 1000;

    /**
     * Depending on the size, return a size formatted in bytes, K, M, G or T
     * bytes.
     * 
     * @param bytes
     *            size in bytes
     * @return human readable value
     */
    public static String format(long bytes) {
        if (bytes < 0) {
            return "invalid input(" + bytes + ")";
        }
        if (bytes < 1.0) {
            return String.format("%d byte", bytes);
        } else if (bytes < KILO) {
            return String.format("%d bytes", bytes);
        } else if (bytes < MEGA) {
            return String.format("%.1fK", bytes / KILO);
        } else if (bytes < GIGA) {
            return String.format("%.1fM", bytes / MEGA);
        } else if (bytes < TERA) {
            return String.format("%.1fG", bytes / GIGA);
        } else {
            return String.format("%.1fT", bytes / TERA);
        }
    }
}

Related

1. comma(long n)
2. format(final long number, final int length)
3. format(final long value, final long divider, final String unit)
4. format(final long value, final long divider, final String unit)
5. format(long mem)
6. format(long milliseconds)
7. format(long ms)
8. format(long numero, int numeroZeri)