Here you can find the source of maxMemoryMB()
public static double maxMemoryMB()
//package com.java2s; /*// www .j a v a 2s . c o m * Copyright [2013-2014] eBay Software Foundation * * 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 { /** * Get maximum memory in megabytes * * @return maximum memory in megabytes */ public static double maxMemoryMB() { return megaBytes(Runtime.getRuntime().maxMemory()); } /** * Get megabytes */ private static double megaBytes(long bytes) { return bytes / 1024.0 / 1024.0; } }