test/java/util/HashMap/SetValue.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 */

/**
 * @test
 * @bug 4627516
 * @summary HashMap.Entry.setValue() returns new value (as opposed to old)
 * @author jbloch
 */

import java.util.*;

public class SetValue {
    static final String key      = "key";
    static final String oldValue = "old";
    static final String newValue = "new";

    public static void main(String args[]) throws Exception {
        Map m = new HashMap();
        m.put(key, oldValue);
        Map.Entry e = (Map.Entry) m.entrySet().iterator().next();
        Object returnVal = e.setValue(newValue);
        if (!returnVal.equals(oldValue))
            throw new RuntimeException("Return value: " + returnVal);
    }
}