/*
* Copyright ( c ) 2012 , 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 .
*
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*/
/* @test
* @ bug 7160242 7165118 7197662
* @ summary Check if NullPointerException is thrown if the key passed
* to remove ( ) is null .
* @ run main / othervm - Djava . util . prefs . userRoot = . RemoveNullKeyCheck
*/
import java.util.prefs.Preferences;
import java.util.prefs.AbstractPreferences;
import java.util.prefs.BackingStoreException;
public class RemoveNullKeyCheck {
private static boolean failed = false ;
public static void main(String[] args) throws Exception {
checkPreferencesRemove();
checkAbstractPreferencesRemove();
if (failed) {
throw new RuntimeException("Expected NullPointerException " +
"not thrown" );
}
}
public static void checkPreferencesRemove() {
try {
Preferences node = Preferences.userRoot().node("N1" );
node.remove(null );
failed = true ;
} catch (NullPointerException npe) {
}
}
public static void checkAbstractPreferencesRemove() {
Preferences abstrPrefs = new AbstractPreferences(null , "" ) {
@Override
protected void putSpi(String key, String value) {
}
@Override
protected String getSpi(String key) {
return null ;
}
@Override
protected void removeSpi(String key) {
}
@Override
protected void removeNodeSpi() throws BackingStoreException {
}
@Override
protected String[] keysSpi() throws BackingStoreException {
return new String[0 ];
}
@Override
protected String[] childrenNamesSpi() throws BackingStoreException {
return new String[0 ];
}
@Override
protected AbstractPreferences childSpi(String name) {
return null ;
}
@Override
protected void syncSpi() throws BackingStoreException {
}
@Override
protected void flushSpi() throws BackingStoreException {
}
};
try {
abstrPrefs.remove(null );
failed = true ;
} catch (NullPointerException npe) {
}
}
}
Messung V0.5 in Prozent C=99 H=80 G=90
¤ Dauer der Verarbeitung: 0.16 Sekunden
(vorverarbeitet am 2026-06-10)
¤
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