1 /*
   2  * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 public class AttemptOOM {
  25     private static MyObj[] data;
  26 
  27     public static void main(String[] args) throws Exception {
  28         System.out.println("Entering AttemptOOM main");
  29 
  30         // each MyObj will allocate 1024 byte array
  31         int sizeInMb = Integer.parseInt(args[0]);
  32         data = new MyObj[sizeInMb*1024];
  33 
  34         System.out.println("data.length = " + data.length);
  35 
  36         for (int i=0; i < data.length; i++) {
  37             data[i] = new MyObj(1024);
  38         }
  39 
  40         System.out.println("AttemptOOM allocation successful");
  41     }
  42 
  43     private static class MyObj {
  44         private byte[] myData;
  45         MyObj(int size) {
  46             myData = new byte[size];
  47         }
  48     }
  49 }