PreferenceChangeListener.java :  » Apache-Harmony-Java-SE » java-package » java » util » prefs » Java Open Source

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/* Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package java.util.prefs;

import java.util.EventListener;

/**
 * This interface is used to handle preferences change events. The
 * implementation of this interface can be installed by the {@code Preferences}
 * instance.
 * 
 * @see Preferences
 * @see PreferenceChangeEvent
 * 
 * 
 * @since 1.4
 */
public interface PreferenceChangeListener extends EventListener {

    /**
     * This method gets invoked whenever a preference is added, deleted or
     * updated.
     * 
     * @param pce
     *            the event instance which describes the changed {@code
     *            Preferences} instance and the preference value.
     */
    void preferenceChange(PreferenceChangeEvent pce);
}
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