Java tutorial
//package com.java2s; /* * Copyright 2011 - AndroidQuery.com (tinyeeliu@gmail.com) * * Licensed 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. */ import java.util.concurrent.Executors; import java.util.concurrent.ScheduledExecutorService; public class Main { private static ScheduledExecutorService storeExe; private static ScheduledExecutorService getFileStoreExecutor() { if (storeExe == null) { storeExe = Executors.newSingleThreadScheduledExecutor(); } return storeExe; } }