/*
* Copyright ( c ) 1999 , Oracle and / or its affiliates . All rights reserved .
* 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 ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
* or visit www . oracle . com if you need additional information or have any
* questions .
*/
/*
* @ test
* @ bug 4286765
* @ summary HashMap and TreeMap entrySet ( ) . remove ( k ) spuriously returned
* false if the Map previously mapped k to null .
*/
import java.util.HashMap;
import java.util.Map;
import java.util.TreeMap;
public class KeySetRemove {
public static void main(String[] args) throws Exception {
Map[] m = {new HashMap(), new TreeMap()};
for (int i=0 ; i<m.length; i++) {
m[i].put("bananas" , null );
if (!m[i].keySet().remove("bananas" ))
throw new Exception("Yes, we have no bananas: " +i);
}
}
}
Messung V0.5 in Prozent C=96 H=77 G=86
¤ Dauer der Verarbeitung: 0.9 Sekunden
(vorverarbeitet am 2026-10-11)
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