Here you can find the source of getAllocatedMemoryMB()
public static double getAllocatedMemoryMB()
//package com.java2s; /*/*from w w w.j av a2s . c om*/ * Copyright 2015 Evgeny Dolganov (evgenij.dolganov@gmail.com). * * 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 { public static double getAllocatedMemoryMB() { return ((double) getAllocatedMemory()) / 1024. / 1024.; } public static long getAllocatedMemory() { return Runtime.getRuntime().totalMemory(); } }