58 lines
2.1 KiB
Java
58 lines
2.1 KiB
Java
/*
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* Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 7198904
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* @summary Verify that cloned TreeMap gets new keyset
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* @author david.buck@oracle.com
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* @run main/othervm Clone
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*/
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import java.util.TreeMap;
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public class Clone {
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public static void main(String[] args) throws Exception {
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TreeMap<String,Object> m1 = new TreeMap<String,Object>();
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m1.put( "one", 1 );
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m1.keySet();
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TreeMap<String,Object> m2 = (TreeMap<String,Object>)m1.clone();
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m1.put( "two", 2 );
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m2.put( "three", 3 );
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// iterate over the clone (m2) and we should get "one" and "three"
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for( final String key : m2.keySet() ) {
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if( !"one".equals( key ) && !"three".equals( key ) ) {
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throw new IllegalStateException( "Unexpected key: " + key );
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}
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}
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// iterate over the original (m1) and we should get "one" and "two"
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for( final String key : m1.keySet() ) {
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if( !"one".equals( key ) && !"two".equals( key ) ) {
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throw new IllegalStateException( "Unexpected key: " + key );
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}
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}
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}
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}
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