2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
21 package org.openecomp.aai.util;
26 public abstract class FileWatcher extends TimerTask {
27 private long timeStamp;
31 * Instantiates a new file watcher.
33 * @param file the file
35 public FileWatcher( File file ) {
37 this.timeStamp = file.lastModified();
42 * @see java.util.TimerTask.run
44 public final void run() {
45 long timeStamp = file.lastModified();
47 if( (timeStamp - this.timeStamp) > 500 ) {
48 this.timeStamp = timeStamp;
56 * @param file the file
58 protected abstract void onChange( File file );