Java Memory Information getMemory()

Description

get Memory

License

Open Source License

Declaration

public static String getMemory() 

Method Source Code

//package com.java2s;
/**/*from   w w  w  .j a v  a2s  .c om*/
 * File: $HeadURL: https://hdt-java.googlecode.com/svn/trunk/hdt-java/src/org/rdfhdt/hdt/util/ProfilingUtil.java $
 * Revision: $Rev: 191 $
 * Last modified: $Date: 2013-03-03 11:41:43 +0000 (dom, 03 mar 2013) $
 * Last modified by: $Author: mario.arias $
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Contacting the authors:
 *   Mario Arias:               mario.arias@deri.org
 *   Javier D. Fernandez:       jfergar@infor.uva.es
 *   Miguel A. Martinez-Prieto: migumar2@infor.uva.es
 *   Alejandro Andres:          fuzzy.alej@gmail.com
 */

public class Main {
    public static String getMemory() {
        return tidyFileSize(Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory()) + " / "
                + tidyFileSize(Runtime.getRuntime().totalMemory()) + " / "
                + tidyFileSize(Runtime.getRuntime().maxMemory());
    }

    public static String tidyFileSize(long size) {
        long calcSize;
        String str;
        if (size >= 1024 * 1024 * 1024) {
            calcSize = (long) (((double) size) / (1024 * 1024 * 1024));
            str = Long.toString(calcSize) + "GB";
        } else if (size >= 1024 * 1024) {
            calcSize = (long) (((double) size) / (1024 * 1024));
            str = Long.toString(calcSize) + "MB";
        } else if (size >= 1024) {
            calcSize = (long) (((double) size) / (1024));
            str = Long.toString(calcSize) + "KB";
        } else {
            calcSize = size;
            str = Long.toString(calcSize) + "B";
        }
        return str;
    }
}

Related

1. getDenotationOfJVMMemorySettings(String stringMapJavaOpts)
2. getInMemoryURL(String dbName)
3. getJavaMemorySize(String string)
4. getJVMMemoryMB()
5. getMemory()
6. getMemory(String memory)
7. getMemoryConsumedSincePreviousCall()
8. getMemoryIncrease()
9. getMemoryInfo()