1 /*
   2  * Copyright 2012 SAP AG.  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 TestPostFieldModification {
  25 
  26   public String value;  // watch modification of value
  27 
  28   public static void main(String[] args){
  29 
  30     System.out.println("Start threads");
  31     // this thread modifies the field 'value'
  32     new Thread() {
  33       TestPostFieldModification test = new TestPostFieldModification();
  34       public void run() {
  35         test.value="test";
  36         for(int i = 0; i < 10; i++) {
  37           test.value += new String("_test");
  38         }
  39 
  40         // JDK-8007710
  41         System.out.println("---TestPostFieldModification-run waiting to exit ...");
  42         try {
  43             System.in.read();
  44         } catch (Exception e) {
  45             System.out.println("---TestPostFieldModification-run got unexpected: "+e);
  46             e.printStackTrace();
  47         }
  48          
  49         System.out.println("---TestPostFieldModification-run bye!");
  50       }
  51     }.start();
  52 
  53     // this thread is used to trigger a gc
  54     Thread d = new Thread() {
  55       public void run() {
  56         while(true) {
  57           try {
  58             Thread.sleep(100);
  59           } catch (InterruptedException e) {
  60 
  61           }
  62           System.gc();
  63         }
  64       }
  65     };
  66     d.setDaemon(true);
  67     d.start();
  68   }
  69 }