Java异步执行任务常用方式FutureTask和ExecutorService

1，ExecutorService结合线程池

package com.asyn;import java.util.Date;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;public class ExecutorServiceTest {private static ExecutorService executor = Executors.newFixedThreadPool(1);public static void main(String[] args) {asynTask();synTask();System.out.println(new Date() + " 主线程执行结束");}/*** 异步执行的方法*/public static void asynTask() {executor.execute(new Runnable() {public void run() {try {// 模拟异步方法执行的过程，耗时10秒Thread.sleep(10000);System.out.println(new Date() + " 异步方法执行结束");} catch (InterruptedException e) {e.printStackTrace();}}});executor.shutdown();}/*** 同步执行的方法*/public static void synTask() {System.out.println(new Date() + " 同步方法执行结束");}}

运行结果：

2，FutureTask

package com.asyn;import java.util.Date;
import java.util.concurrent.Callable;
import java.util.concurrent.FutureTask;public class FutureTaskTest {public static void main(String[] args) {asynTask();synTask();System.out.println(new Date() + " 主线程执行完毕");}public static void asynTask() {FutureTask task = new FutureTask(new Callable() {public Integer call() throws Exception {Thread.sleep(10000);System.out.println(new Date() + " 异步方法执行完毕");return 1;}});Thread thread = new Thread(task);thread.start();}public static void synTask() {System.out.println(new Date() + " 同步方法执行完毕");}}

执行结果：

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