Here you can find the source of getMemoryString()
public static String getMemoryString()
//package com.java2s; /*/*from w w w . jav a2s . c o m*/ * This file is part of the Origin-World game client. * Copyright (C) 2013 Arkadiy Fattakhov <ark@ark.su> * * This program 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, version 3 of the License. * * This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */ public class Main { public static String getMemoryString() { Runtime rt = Runtime.getRuntime(); long free = rt.freeMemory(); long total = rt.totalMemory(); long max = rt.maxMemory(); long used = total - free; long percent1 = used * 100L / total; long percent2 = used * 100L / max; return "Working memory: " + percent1 + "% (" + used + "/" + total + ")" + " VM Max: " + percent2 + "% (" + used + "/" + max + ")"; } }