Java tutorial
//package com.java2s; /** * * Copyright 2014 The Darks ORM Project (Liu lihua) * * 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.List; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; import java.util.concurrent.TimeUnit; public class Main { private static final ExecutorService service = Executors.newCachedThreadPool(); public static void shutdownNow() { shutdownNow(service); } public static void shutdownNow(ExecutorService exec) { if (exec != null) { List<Runnable> tasks = exec.shutdownNow(); if (tasks.size() == 0) { System.out.println( "Runnable tasks outlived thread pool executor service [" + ", tasks=" + tasks + ']'); } try { exec.awaitTermination(Long.MAX_VALUE, TimeUnit.MILLISECONDS); } catch (InterruptedException e) { System.out.println( "Got interrupted while waiting for executor service to stop.[" + e.toString() + "]"); } } } }