01: /* Licensed to the Apache Software Foundation (ASF) under one or more
02: * contributor license agreements. See the NOTICE file distributed with
03: * this work for additional information regarding copyright ownership.
04: * The ASF licenses this file to You under the Apache License, Version 2.0
05: * (the "License"); you may not use this file except in compliance with
06: * the License. You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
10: * Unless required by applicable law or agreed to in writing, software
11: * distributed under the License is distributed on an "AS IS" BASIS,
12: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13: * See the License for the specific language governing permissions and
14: * limitations under the License.
15: */
16:
17: package java.util.prefs;
18:
19: import java.util.EventListener;
20: import java.util.prefs.NodeChangeEvent;
21:
22: /**
23: * This interface is used to handle preferences node change event. Implementation
24: * of this interface can be installed by <code>Preferences</code> instance.
25: *
26: * @see Preferences
27: * @see NodeChangeEvent
28: *
29: * @since 1.4
30: */
31: public interface NodeChangeListener extends EventListener {
32: /**
33: * This method gets called whenever a child is added to a node.
34: *
35: * @param e Node change event.
36: */
37: public void childAdded(NodeChangeEvent e);
38:
39: /**
40: * This method gets called whenever a child is removed from a node.
41: *
42: * @param e Node change event.
43: */
44: public void childRemoved(NodeChangeEvent e);
45: }
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