1 /* 2 * Copyright (c) 2012, 2013, 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 * @test 26 * @bug 7198904 27 * @summary Verify that cloned TreeMap gets new keyset 28 * @author david.buck@oracle.com 29 * @run main/othervm Clone 30 */ 31 32 import java.util.TreeMap; 33 34 public class Clone { 35 main(String[] args)36 public static void main(String[] args) throws Exception { 37 TreeMap<String,Object> m1 = new TreeMap<String,Object>(); 38 m1.put( "one", 1 ); 39 m1.keySet(); 40 TreeMap<String,Object> m2 = (TreeMap<String,Object>)m1.clone(); 41 m1.put( "two", 2 ); 42 m2.put( "three", 3 ); 43 // iterate over the clone (m2) and we should get "one" and "three" 44 for( final String key : m2.keySet() ) { 45 if( !"one".equals( key ) && !"three".equals( key ) ) { 46 throw new IllegalStateException( "Unexpected key: " + key ); 47 } 48 } 49 // iterate over the original (m1) and we should get "one" and "two" 50 for( final String key : m1.keySet() ) { 51 if( !"one".equals( key ) && !"two".equals( key ) ) { 52 throw new IllegalStateException( "Unexpected key: " + key ); 53 } 54 } 55 } 56 57 } 58