Get memory information : Runtime « Development Class « Java

1. Java
2. Development Class
3. Runtime

Get memory information

      
/*
 * This file is part of aion-unique <aion-unique.org>.
 *
 *  aion-unique is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  aion-unique 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with aion-unique.  If not, see <http://www.gnu.org/licenses/>.
 */

/**
 * @author lord_rex This class is for get/log system informations.
 * 
 */ 
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

public class Util{

  public static String[] getMemoryInfo()
  {
    double max = Runtime.getRuntime().maxMemory() / 1024; // maxMemory is the upper limit the jvm can use
    double allocated = Runtime.getRuntime().totalMemory() / 1024; // totalMemory the size of the current allocation
                                    // pool
    double nonAllocated = max - allocated; // non allocated memory till jvm limit
    double cached = Runtime.getRuntime().freeMemory() / 1024; // freeMemory the unused memory in the allocation pool
    double used = allocated - cached; // really used memory
    double useable = max - used; // allocated, but non-used and non-allocated memory
    DecimalFormat df = new DecimalFormat(" (0.0000'%')");
    DecimalFormat df2 = new DecimalFormat(" # 'KB'");
    return new String[]
    { //
    "+----", //
        "| Global Memory Informations at " + getRealTime().toString() + ":", //
        "|    |", //
        "| Allowed Memory:" + df2.format(max), //
        "|    |= Allocated Memory:" + df2.format(allocated) + df.format(allocated / max * 100), //
        "|    |= Non-Allocated Memory:" + df2.format(nonAllocated) + df.format(nonAllocated / max * 100), //
        "| Allocated Memory:" + df2.format(allocated), //
        "|    |= Used Memory:" + df2.format(used) + df.format(used / max * 100), //
        "|    |= Unused (cached) Memory:" + df2.format(cached) + df.format(cached / max * 100), //
        "| Useable Memory:" + df2.format(useable) + df.format(useable / max * 100), //
        "+----" //
    };
  }
  public static String getRealTime()
  {
    SimpleDateFormat String = new SimpleDateFormat("H:mm:ss");
    return String.format(new Date());
  }

}

   
    
    
    
    
    
  

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