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 }.start(); 41 42 // this thread is used to trigger a gc 43 Thread d = new Thread() { 44 public void run() { 45 while(true) { 46 try { 47 Thread.sleep(100); 48 } catch (InterruptedException e) { 49 50 } 51 System.gc(); 52 } 53 } 54 }; 55 d.setDaemon(true); 56 d.start(); 57 } 58 }