1 /* 2 * Copyright (c) 2011 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 /* 25 * Portions Copyright (c) 2011 IBM Corporation 26 */ 27 28 /* 29 * @test 30 * @bug 6312706 31 * @summary Iterator.remove() from Map.entrySet().iterator() invalidates returned Entry. 32 * @author Neil Richards <neil.richards@ngmr.net>, <neil_richards@uk.ibm.com> 33 */ 34 35 import java.util.IdentityHashMap; 36 import java.util.Iterator; 37 import java.util.Map; 38 39 public class EntrySetIteratorRemoveInvalidatesEntry { 40 public static void main(String[] args) throws Exception { 41 final IdentityHashMap<String, String> identityHashMap = 42 new IdentityHashMap<>(); 43 44 identityHashMap.put("One", "Un"); 45 identityHashMap.put("Two", "Deux"); 46 identityHashMap.put("Three", "Trois"); 47 48 Iterator<Map.Entry<String, String>> entrySetIterator = 49 identityHashMap.entrySet().iterator(); 50 Map.Entry<String, String> entry = entrySetIterator.next(); 51 52 entrySetIterator.remove(); 53 54 try { 55 entry.getKey(); 56 throw new RuntimeException("Test FAILED: Entry not invalidated by removal."); 57 } catch (Exception e) { } 58 } 59 }