import java.util.concurrent.*; public class AsyncExecutorExample { public static void main(String[] args) throws ExecutionException, InterruptedException { ExecutorService executor = Executors.newSingleThreadExecutor(); Callable<String> task = () -> { // 模拟耗时操作 TimeUnit.SECONDS.sleep(2); ret...
int poolSize)throws IOException {serverSocket = new ServerSocket(port);pool = Executors.newFixedThreadPool(poolSize);}public void run() { // run the servicetry {for (;;) {pool.execute(new Handler(serverSocket.accept()));}} catch (IOException...
executorService.shutdown(); }staticclassMyThreadAimplementsCallable<String> {@OverridepublicStringcall()throwsException { System.out.println("begin: "+ Thread.currentThread().getName() +", "+ System.currentTimeMillis()); TimeUnit.SECONDS.sleep(2); System.out.println("end: "+ Thread.currentThrea...
1、Executor Executor的相关关系图 Executors少了一个创建线程池的方法newScheduledThreadPool() 继承和实现关系 public interface... 接口,是Executor 的子接口。 ...2.Executor接口中定义了execute()方法,用来接收一个Runnable接口的对象, 而ExecutorService接口中定义的submit()方法可以接收Runnable...4.Executor和Execu...
2.2.1 Executors.newFixedThreadPool(int n); 方式二、JDK5提供代表线程池的接口:ExcutorService 2.3 管理线程池 2.3.1 设置线程池属性 一、实现Callable接口 1.1与Runnable相比 与Runnable相比Callable功能更加强大 相比于run()方法,call()可以有返回值
executor.shutdownNow();future.get(); 你可能注意到我们这次创建executor的方式与上一个例子稍有不同。我们使用newFixedThreadPool(1)来创建一个单线程线程池的 execuot service。 这等同于使用newSingleThreadExecutor不过使用第二种方式我们可以稍后通过简单的传入一个比1大的值来增加线程池的大小。
ExecutorService executorService = Executors.newCachedThreadPool(); //开启异步线程 executorService.execute(new SendRestult(processService, jsonString, approvalFlag, lesseeId)); public final class SendRestult implements Runnable { private IProcessService processService; private String params; private Integer ...
下面service.take()的一次调用将会只返回一个结果。 private static String getFirstResultExecutors(String question, List<String> engines) { ExecutorCompletionService<String> service = new ExecutorCompletionService<String>(Executors.newFixedThreadPool(4)); for(String base: engines) { String url = base + ...
java中Executor,ExecutorService,ThreadPoolExecutor详解 1.Excutor 源码非常简单,只有一个execute(Runnable command)回调接口 publicinterfaceExecutor{/** * Executes the given command at some time in the future. The command * may execute in a new thread, in a pooled thread, or in the calling ...
ExecutorService executorService=Executors.newSingleThreadExecutor();Set<Callable<String>>callables=newHashSet<Callable<String>>();callables.add(newCallable<String>(){publicStringcall()throws Exception{return"Task 1";}});callables.add(newCallable<String>(){publicStringcall()throws Exception{return"Task...