Java Long Number Readable Format getMaxHeap(String message)

Description

get Max Heap

License

Open Source License

Declaration

public synchronized static String getMaxHeap(String message) 

Method Source Code

//package com.java2s;
/* This software was developed by employees of the National Institute of
 * Standards and Technology (NIST), an agency of the Federal Government.
 * Pursuant to title 15 United States Code Section 105, works of NIST
 * employees are not subject to copyright protection in the United States
 * and are considered to be in the public domain.  As a result, a formal
 * license is not needed to use the software.
 * /*from w ww  .  ja  v  a  2s  .c  o m*/
 * This software is provided by NIST as a service and is expressly
 * provided "AS IS".  NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED
 * OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT
 * AND DATA ACCURACY.  NIST does not warrant or make any representations
 * regarding the use of the software or the results thereof including, but
 * not limited to, the correctness, accuracy, reliability or usefulness of
 * the software.
 * 
 * Permission to use this software is contingent upon your acceptance
 * of the terms of this agreement.
 */

import java.text.DecimalFormat;

public class Main {
    public synchronized static String getMaxHeap(String message) {
        return "Max heap size (" + message + ") " + readableFileSize(Runtime.getRuntime().maxMemory());
    }

    public synchronized static String readableFileSize(long size) {
        if (size <= 0) {
            return "0";
        }
        final String[] units = new String[] { "bytes", "Kb", "Mb", "Gb", "Tb" };
        final int digitGroups = (int) (Math.log10(size) / Math.log10(1024));
        return new DecimalFormat("#,##0.#").format(size / Math.pow(1024, digitGroups)) + " " + units[digitGroups];
    }
}

Related

1. getHumanReadableIfSpeed(long ifSpeed)
2. getHumanReadableSize(long bytes)
3. getHumanReadableSize(long fileSize)
4. getHumanReadableSize(long size, long unit, String unitName)
5. getHumanSize(long size)
6. getTrafficString(long bytes)
7. humanize(long value)
8. humanizeBytes(long bytes)
9. humanNumber(long num)