一、java代码模拟并发

1.1、一次并发

单次并发测试

1、使用CountDownLatch

　　等待一个或多个线程一起执行

　　详细参看：007-多线程-锁-JUC锁-CountDownLatch-闭锁【允许一个或多个线程，等待其他一组线程完成操作，再继续执行】

示例代码

    @Test

    public void poolCountDownLatch() throws Exception {

        int parrelnum=100;

        //所有线程阻塞，然后统一开始

        CountDownLatch begin = new CountDownLatch(1);

        //主线程阻塞，直到所有分线程执行完毕

        CountDownLatch end = new CountDownLatch(parrelnum);

        List<Future<String>> futureList = new ArrayList<>();

        ExecutorService fixedThreadPool = Executors.newFixedThreadPool(parrelnum);

        for (int i = 0; i < parrelnum; i++) {

            Future<String> submit = fixedThreadPool.submit(() -> {

                try {

                    //begin 阻塞所有线程

                    begin.await();

                    System.out.println("======-----------------------------"+ LocalDateTime.now());

//                    System.out.println("======-----------------------------"+ LocalDateTime.now()

//                            +":"+Thread.currentThread().getName()

//                            +"；守护线程："+Thread.currentThread().isDaemon());

                    Thread.sleep(new Random().nextInt(2000));

                } catch (InterruptedException e) {

                    e.printStackTrace();

                }

                finally {

                    //end 执行完代码减一

                    end.countDown();

                }

                return "ok:"+LocalDateTime.now();

            });

            futureList.add(submit);

        }

        fixedThreadPool.shutdown();

        try {

            System.out.println(LocalDateTime.now()+":"+"1秒后统一开始");

            Thread.sleep(1000);

            //begin 减一 = 0 唤醒 阻塞的所有线程

            begin.countDown();

            for (Future<String> future : futureList) {

                System.out.println(future.get());

            }

            //end 等待所有代码执行完毕

            end.await();

            System.out.println(LocalDateTime.now()+":"+"全部结束");

        } catch (InterruptedException e) {

            e.printStackTrace();

        }

    }

输出：

2019-08-02T22:58:23.762:1秒后统一开始

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.765

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.768

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.770

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.770

======-----------------------------2019-08-02T22:58:24.770

======-----------------------------2019-08-02T22:58:24.770

======-----------------------------2019-08-02T22:58:24.770

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.773

======-----------------------------2019-08-02T22:58:24.773

======-----------------------------2019-08-02T22:58:24.773

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.773

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.768

======-----------------------------2019-08-02T22:58:24.768

======-----------------------------2019-08-02T22:58:24.768

======-----------------------------2019-08-02T22:58:24.768

======-----------------------------2019-08-02T22:58:24.768

======-----------------------------2019-08-02T22:58:24.765

======-----------------------------2019-08-02T22:58:24.765

======-----------------------------2019-08-02T22:58:24.765

======-----------------------------2019-08-02T22:58:24.765

======-----------------------------2019-08-02T22:58:24.765

======-----------------------------2019-08-02T22:58:24.765

======-----------------------------2019-08-02T22:58:24.765

======-----------------------------2019-08-02T22:58:24.765

======-----------------------------2019-08-02T22:58:24.765

======-----------------------------2019-08-02T22:58:24.764

======-----------------------------2019-08-02T22:58:24.773

======-----------------------------2019-08-02T22:58:24.773

======-----------------------------2019-08-02T22:58:24.773

======-----------------------------2019-08-02T22:58:24.773

======-----------------------------2019-08-02T22:58:24.773

======-----------------------------2019-08-02T22:58:24.773

======-----------------------------2019-08-02T22:58:24.773

======-----------------------------2019-08-02T22:58:24.773

======-----------------------------2019-08-02T22:58:24.773

======-----------------------------2019-08-02T22:58:24.773

======-----------------------------2019-08-02T22:58:24.770

======-----------------------------2019-08-02T22:58:24.770

======-----------------------------2019-08-02T22:58:24.770

======-----------------------------2019-08-02T22:58:24.770

======-----------------------------2019-08-02T22:58:24.770

======-----------------------------2019-08-02T22:58:24.770

======-----------------------------2019-08-02T22:58:24.770

======-----------------------------2019-08-02T22:58:24.769

======-----------------------------2019-08-02T22:58:24.769

ok:2019-08-02T22:58:24.924

ok:2019-08-02T22:58:25.803

ok:2019-08-02T22:58:26.473

ok:2019-08-02T22:58:25.947

ok:2019-08-02T22:58:25.891

ok:2019-08-02T22:58:25.859

ok:2019-08-02T22:58:25.457

ok:2019-08-02T22:58:26.443

ok:2019-08-02T22:58:25.457

ok:2019-08-02T22:58:26.157

ok:2019-08-02T22:58:25.003

ok:2019-08-02T22:58:24.979

ok:2019-08-02T22:58:25.698

ok:2019-08-02T22:58:25.084

ok:2019-08-02T22:58:25.102

ok:2019-08-02T22:58:26.083

ok:2019-08-02T22:58:26.377

ok:2019-08-02T22:58:25.669

ok:2019-08-02T22:58:26.360

ok:2019-08-02T22:58:26.640

ok:2019-08-02T22:58:26.321

ok:2019-08-02T22:58:26.087

ok:2019-08-02T22:58:26.226

ok:2019-08-02T22:58:24.833

ok:2019-08-02T22:58:26.736

ok:2019-08-02T22:58:25.497

ok:2019-08-02T22:58:25.374

ok:2019-08-02T22:58:26.377

ok:2019-08-02T22:58:26.764

ok:2019-08-02T22:58:24.889

ok:2019-08-02T22:58:26.419

ok:2019-08-02T22:58:25.174

ok:2019-08-02T22:58:25.447

ok:2019-08-02T22:58:24.957

ok:2019-08-02T22:58:24.817

ok:2019-08-02T22:58:24.809

ok:2019-08-02T22:58:26.764

ok:2019-08-02T22:58:26.035

ok:2019-08-02T22:58:25.855

ok:2019-08-02T22:58:26.310

ok:2019-08-02T22:58:26.412

ok:2019-08-02T22:58:26.210

ok:2019-08-02T22:58:25.569

ok:2019-08-02T22:58:25.039

ok:2019-08-02T22:58:25.846

ok:2019-08-02T22:58:26.328

ok:2019-08-02T22:58:24.802

ok:2019-08-02T22:58:25.970

ok:2019-08-02T22:58:25.970

ok:2019-08-02T22:58:25.475

ok:2019-08-02T22:58:26.147

ok:2019-08-02T22:58:25.937

ok:2019-08-02T22:58:26.525

ok:2019-08-02T22:58:25.527

ok:2019-08-02T22:58:24.871

ok:2019-08-02T22:58:26.246

ok:2019-08-02T22:58:24.786

ok:2019-08-02T22:58:25.484

ok:2019-08-02T22:58:25.871

ok:2019-08-02T22:58:25.240

ok:2019-08-02T22:58:24.899

ok:2019-08-02T22:58:24.889

ok:2019-08-02T22:58:25.559

ok:2019-08-02T22:58:24.856

ok:2019-08-02T22:58:24.783

ok:2019-08-02T22:58:25.257

ok:2019-08-02T22:58:26.394

ok:2019-08-02T22:58:26.471

ok:2019-08-02T22:58:25.957

ok:2019-08-02T22:58:25.930

ok:2019-08-02T22:58:25.316

ok:2019-08-02T22:58:25.323

ok:2019-08-02T22:58:26.381

ok:2019-08-02T22:58:26.552

ok:2019-08-02T22:58:26.577

ok:2019-08-02T22:58:25.369

ok:2019-08-02T22:58:26.157

ok:2019-08-02T22:58:25.937

ok:2019-08-02T22:58:26.030

ok:2019-08-02T22:58:26.693

ok:2019-08-02T22:58:24.982

ok:2019-08-02T22:58:25.511

ok:2019-08-02T22:58:25.042

ok:2019-08-02T22:58:26.307

ok:2019-08-02T22:58:25.769

ok:2019-08-02T22:58:25.710

ok:2019-08-02T22:58:26.699

ok:2019-08-02T22:58:26.047

ok:2019-08-02T22:58:26.056

ok:2019-08-02T22:58:24.822

ok:2019-08-02T22:58:26.204

ok:2019-08-02T22:58:24.803

ok:2019-08-02T22:58:26.257

ok:2019-08-02T22:58:25.701

ok:2019-08-02T22:58:24.964

ok:2019-08-02T22:58:25.678

ok:2019-08-02T22:58:24.858

ok:2019-08-02T22:58:25.741

ok:2019-08-02T22:58:26.153

ok:2019-08-02T22:58:26.023

2019-08-02T22:58:26.766:全部结束

可以看到 100个线程并发，同时并发，64-73毫秒之间 即 9毫秒

2、不使用CountDownLatch

    @Test

    public void poolNoCountDownLatch() throws Exception {

        int parrelnum=100;

        List<Future<String>> futureList = new ArrayList<>();

        ExecutorService fixedThreadPool = Executors.newFixedThreadPool(parrelnum);

        for (int i = 0; i < parrelnum; i++) {

            Future<String> submit = fixedThreadPool.submit(() -> {

                try {

                    System.out.println("======-----------------------------"+ LocalDateTime.now());

//                    System.out.println("======-----------------------------"+ LocalDateTime.now()

//                            +":"+Thread.currentThread().getName()

//                            +"；守护线程："+Thread.currentThread().isDaemon());

                    Thread.sleep(new Random().nextInt(2000));

                } catch (InterruptedException e) {

                    e.printStackTrace();

                }

                return "ok:"+LocalDateTime.now();

            });

            futureList.add(submit);

        }

        fixedThreadPool.shutdown();

        try {

            System.out.println(LocalDateTime.now()+":"+"1秒后统一开始");

            Thread.sleep(1000);

            for (Future<String> future : futureList) {

                System.out.println(future.get());

            }

            System.out.println(LocalDateTime.now()+":"+"全部结束");

        } catch (InterruptedException e) {

            e.printStackTrace();

        }

    }

可以看到 100个线程并发，同时并发，91-96毫秒之间 即 5毫秒

com.intellij.rt.execution.junit.JUnitStarter -ideVersion5 -junit4 com.github.bjlhx15.common.base.thread.spring.controller.ThreadPoolExecutorParrelTest,poolNoCountDownLatch

======-----------------------------2019-08-02T23:02:42.491

======-----------------------------2019-08-02T23:02:42.491

======-----------------------------2019-08-02T23:02:42.492

======-----------------------------2019-08-02T23:02:42.491

======-----------------------------2019-08-02T23:02:42.491

======-----------------------------2019-08-02T23:02:42.492

======-----------------------------2019-08-02T23:02:42.491

======-----------------------------2019-08-02T23:02:42.491

======-----------------------------2019-08-02T23:02:42.492

======-----------------------------2019-08-02T23:02:42.492

======-----------------------------2019-08-02T23:02:42.491

======-----------------------------2019-08-02T23:02:42.492

======-----------------------------2019-08-02T23:02:42.492

======-----------------------------2019-08-02T23:02:42.492

======-----------------------------2019-08-02T23:02:42.491

======-----------------------------2019-08-02T23:02:42.493

======-----------------------------2019-08-02T23:02:42.492

======-----------------------------2019-08-02T23:02:42.493

======-----------------------------2019-08-02T23:02:42.492

======-----------------------------2019-08-02T23:02:42.493

======-----------------------------2019-08-02T23:02:42.493

======-----------------------------2019-08-02T23:02:42.492

======-----------------------------2019-08-02T23:02:42.493

======-----------------------------2019-08-02T23:02:42.492

======-----------------------------2019-08-02T23:02:42.493

======-----------------------------2019-08-02T23:02:42.493

======-----------------------------2019-08-02T23:02:42.493

======-----------------------------2019-08-02T23:02:42.493

======-----------------------------2019-08-02T23:02:42.493

======-----------------------------2019-08-02T23:02:42.494

======-----------------------------2019-08-02T23:02:42.494

======-----------------------------2019-08-02T23:02:42.493

======-----------------------------2019-08-02T23:02:42.494

======-----------------------------2019-08-02T23:02:42.493

======-----------------------------2019-08-02T23:02:42.493

======-----------------------------2019-08-02T23:02:42.493

======-----------------------------2019-08-02T23:02:42.494

======-----------------------------2019-08-02T23:02:42.494

======-----------------------------2019-08-02T23:02:42.494

======-----------------------------2019-08-02T23:02:42.493

======-----------------------------2019-08-02T23:02:42.494

======-----------------------------2019-08-02T23:02:42.494

======-----------------------------2019-08-02T23:02:42.494

======-----------------------------2019-08-02T23:02:42.495

======-----------------------------2019-08-02T23:02:42.494

======-----------------------------2019-08-02T23:02:42.495

======-----------------------------2019-08-02T23:02:42.494

======-----------------------------2019-08-02T23:02:42.494

======-----------------------------2019-08-02T23:02:42.494

======-----------------------------2019-08-02T23:02:42.495

======-----------------------------2019-08-02T23:02:42.495

======-----------------------------2019-08-02T23:02:42.494

======-----------------------------2019-08-02T23:02:42.495

======-----------------------------2019-08-02T23:02:42.495

======-----------------------------2019-08-02T23:02:42.494

======-----------------------------2019-08-02T23:02:42.495

======-----------------------------2019-08-02T23:02:42.495

======-----------------------------2019-08-02T23:02:42.494

======-----------------------------2019-08-02T23:02:42.494

======-----------------------------2019-08-02T23:02:42.496

======-----------------------------2019-08-02T23:02:42.496

======-----------------------------2019-08-02T23:02:42.494

======-----------------------------2019-08-02T23:02:42.496

======-----------------------------2019-08-02T23:02:42.494

======-----------------------------2019-08-02T23:02:42.496

======-----------------------------2019-08-02T23:02:42.494

======-----------------------------2019-08-02T23:02:42.496

======-----------------------------2019-08-02T23:02:42.494

======-----------------------------2019-08-02T23:02:42.494

======-----------------------------2019-08-02T23:02:42.493

======-----------------------------2019-08-02T23:02:42.493

2019-08-02T23:02:42.493:1秒后统一开始

======-----------------------------2019-08-02T23:02:42.493

======-----------------------------2019-08-02T23:02:42.493

======-----------------------------2019-08-02T23:02:42.496

======-----------------------------2019-08-02T23:02:42.496

======-----------------------------2019-08-02T23:02:42.496

======-----------------------------2019-08-02T23:02:42.496

======-----------------------------2019-08-02T23:02:42.496

======-----------------------------2019-08-02T23:02:42.496

======-----------------------------2019-08-02T23:02:42.496

======-----------------------------2019-08-02T23:02:42.496

======-----------------------------2019-08-02T23:02:42.496

======-----------------------------2019-08-02T23:02:42.496

======-----------------------------2019-08-02T23:02:42.495

======-----------------------------2019-08-02T23:02:42.495

======-----------------------------2019-08-02T23:02:42.495

======-----------------------------2019-08-02T23:02:42.495

======-----------------------------2019-08-02T23:02:42.495

======-----------------------------2019-08-02T23:02:42.495

======-----------------------------2019-08-02T23:02:42.495

======-----------------------------2019-08-02T23:02:42.495

======-----------------------------2019-08-02T23:02:42.495

======-----------------------------2019-08-02T23:02:42.495

======-----------------------------2019-08-02T23:02:42.495

======-----------------------------2019-08-02T23:02:42.495

======-----------------------------2019-08-02T23:02:42.495

======-----------------------------2019-08-02T23:02:42.495

======-----------------------------2019-08-02T23:02:42.495

======-----------------------------2019-08-02T23:02:42.495

======-----------------------------2019-08-02T23:02:42.495

ok:2019-08-02T23:02:43.998

ok:2019-08-02T23:02:43.772

ok:2019-08-02T23:02:42.961

ok:2019-08-02T23:02:42.623

ok:2019-08-02T23:02:44.241

ok:2019-08-02T23:02:43.478

ok:2019-08-02T23:02:44.477

ok:2019-08-02T23:02:43.033

ok:2019-08-02T23:02:43.533

ok:2019-08-02T23:02:44.004

ok:2019-08-02T23:02:42.856

ok:2019-08-02T23:02:44.217

ok:2019-08-02T23:02:44.190

ok:2019-08-02T23:02:44.011

ok:2019-08-02T23:02:42.603

ok:2019-08-02T23:02:44.448

ok:2019-08-02T23:02:44.017

ok:2019-08-02T23:02:42.833

ok:2019-08-02T23:02:42.808

ok:2019-08-02T23:02:44.479

ok:2019-08-02T23:02:43.207

ok:2019-08-02T23:02:44.190

ok:2019-08-02T23:02:42.677

ok:2019-08-02T23:02:43.624

ok:2019-08-02T23:02:42.848

ok:2019-08-02T23:02:44.161

ok:2019-08-02T23:02:43.904

ok:2019-08-02T23:02:44.439

ok:2019-08-02T23:02:44.361

ok:2019-08-02T23:02:43.598

ok:2019-08-02T23:02:43.777

ok:2019-08-02T23:02:43.153

ok:2019-08-02T23:02:42.922

ok:2019-08-02T23:02:43.466

ok:2019-08-02T23:02:43.689

ok:2019-08-02T23:02:43.881

ok:2019-08-02T23:02:42.784

ok:2019-08-02T23:02:43.598

ok:2019-08-02T23:02:42.691

ok:2019-08-02T23:02:43.671

ok:2019-08-02T23:02:43.920

ok:2019-08-02T23:02:43.833

ok:2019-08-02T23:02:44.415

ok:2019-08-02T23:02:43.019

ok:2019-08-02T23:02:44.244

ok:2019-08-02T23:02:42.963

ok:2019-08-02T23:02:44.361

ok:2019-08-02T23:02:43.689

ok:2019-08-02T23:02:43.620

ok:2019-08-02T23:02:42.753

ok:2019-08-02T23:02:43.055

ok:2019-08-02T23:02:43.259

ok:2019-08-02T23:02:43.837

ok:2019-08-02T23:02:44.233

ok:2019-08-02T23:02:43.483

ok:2019-08-02T23:02:42.753

ok:2019-08-02T23:02:43.823

ok:2019-08-02T23:02:44.448

ok:2019-08-02T23:02:44.361

ok:2019-08-02T23:02:43.727

ok:2019-08-02T23:02:42.641

ok:2019-08-02T23:02:43.648

ok:2019-08-02T23:02:43.282

ok:2019-08-02T23:02:42.522

ok:2019-08-02T23:02:44.394

ok:2019-08-02T23:02:43.037

ok:2019-08-02T23:02:44.366

ok:2019-08-02T23:02:44.093

ok:2019-08-02T23:02:43.494

ok:2019-08-02T23:02:44.120

ok:2019-08-02T23:02:44.283

ok:2019-08-02T23:02:43.917

ok:2019-08-02T23:02:44.093

ok:2019-08-02T23:02:43.524

ok:2019-08-02T23:02:42.593

ok:2019-08-02T23:02:43.628

ok:2019-08-02T23:02:42.544

ok:2019-08-02T23:02:43.279

ok:2019-08-02T23:02:44.182

ok:2019-08-02T23:02:42.878

ok:2019-08-02T23:02:44.177

ok:2019-08-02T23:02:43.371

ok:2019-08-02T23:02:42.538

ok:2019-08-02T23:02:43.783

ok:2019-08-02T23:02:43.515

ok:2019-08-02T23:02:43.616

ok:2019-08-02T23:02:43.241

ok:2019-08-02T23:02:43.366

ok:2019-08-02T23:02:42.731

ok:2019-08-02T23:02:43.844

ok:2019-08-02T23:02:43.423

ok:2019-08-02T23:02:43.698

ok:2019-08-02T23:02:43.689

ok:2019-08-02T23:02:43.733

ok:2019-08-02T23:02:43.459

ok:2019-08-02T23:02:43.546

ok:2019-08-02T23:02:44.067

ok:2019-08-02T23:02:44.494

ok:2019-08-02T23:02:44.054

ok:2019-08-02T23:02:43.923

2019-08-02T23:02:44.495:全部结束

Process finished with exit code 0

3、小结

故针对上述一次并发不推荐使用CountDownLatch增加程序复杂度

1.2、循环并发

如，15个线程，每5个一组循环并发测试

    @Test

    public void poolCyclicBarrier() throws Exception {

        int parrelnum = 5;

        //所有线程阻塞，然后统一开始

        CyclicBarrier cyclicBarrier = new CyclicBarrier(parrelnum);

        List<Future<String>> futureList = new ArrayList<>();

        ExecutorService fixedThreadPool = Executors.newFixedThreadPool(parrelnum);

        for (int i = 0; i < 15; i++) {

            Future<String> submit = fixedThreadPool.submit(() -> {

                try {

                    Thread.sleep(new Random().nextInt(2000));

                    //begin 阻塞所有线程

                    cyclicBarrier.await();

                    System.out.println("======-----------------------------并发：" + LocalDateTime.now());

                    Thread.sleep(new Random().nextInt(2000));

                    System.out.println("======-----------------------------" + LocalDateTime.now()

                            + ":" + Thread.currentThread().getName()

                            + "；守护线程：" + Thread.currentThread().isDaemon());

                } catch (InterruptedException e) {

                    e.printStackTrace();

                }

                return "ok:" + LocalDateTime.now();

            });

            futureList.add(submit);

        }

        for (Future<String> future : futureList) {

            future.get();

//                System.out.println(future.get());

        }

    }

输出

======-----------------------------并发：2019-08-06T21:11:21.970

======-----------------------------并发：2019-08-06T21:11:21.970

======-----------------------------并发：2019-08-06T21:11:21.970

======-----------------------------并发：2019-08-06T21:11:21.970

======-----------------------------并发：2019-08-06T21:11:21.970

======-----------------------------2019-08-06T21:11:22.488:pool-1-thread-2；守护线程：false

======-----------------------------2019-08-06T21:11:22.610:pool-1-thread-1；守护线程：false

======-----------------------------2019-08-06T21:11:22.635:pool-1-thread-4；守护线程：false

======-----------------------------2019-08-06T21:11:23.222:pool-1-thread-5；守护线程：false

======-----------------------------2019-08-06T21:11:23.807:pool-1-thread-3；守护线程：false

======-----------------------------并发：2019-08-06T21:11:25.161

======-----------------------------并发：2019-08-06T21:11:25.161

======-----------------------------并发：2019-08-06T21:11:25.161

======-----------------------------并发：2019-08-06T21:11:25.161

======-----------------------------并发：2019-08-06T21:11:25.161

======-----------------------------2019-08-06T21:11:26.123:pool-1-thread-2；守护线程：false

======-----------------------------2019-08-06T21:11:26.183:pool-1-thread-4；守护线程：false

======-----------------------------2019-08-06T21:11:26.295:pool-1-thread-3；守护线程：false

======-----------------------------2019-08-06T21:11:26.701:pool-1-thread-5；守护线程：false

======-----------------------------2019-08-06T21:11:27.016:pool-1-thread-1；守护线程：false

======-----------------------------并发：2019-08-06T21:11:28.752

======-----------------------------并发：2019-08-06T21:11:28.752

======-----------------------------并发：2019-08-06T21:11:28.752

======-----------------------------并发：2019-08-06T21:11:28.752

======-----------------------------并发：2019-08-06T21:11:28.752

======-----------------------------2019-08-06T21:11:28.983:pool-1-thread-3；守护线程：false

======-----------------------------2019-08-06T21:11:29.548:pool-1-thread-5；守护线程：false

======-----------------------------2019-08-06T21:11:29.668:pool-1-thread-1；守护线程：false

======-----------------------------2019-08-06T21:11:29.827:pool-1-thread-2；守护线程：false

======-----------------------------2019-08-06T21:11:29.868:pool-1-thread-4；守护线程：false

二、

006-多线程-JUC线程池-并发测试程序的更多相关文章

  1. java多线程系类：JUC线程池：02之线程池原理（一）

    在上一章"Java多线程系列--"JUC线程池"01之 线程池架构"中,我们了解了线程池的架构.线程池的实现类是ThreadPoolExecutor类.本章,我 ...

  2. Java多线程系列--“JUC线程池”02之 线程池原理(一)

    概要 在上一章"Java多线程系列--“JUC线程池”01之 线程池架构"中,我们了解了线程池的架构.线程池的实现类是ThreadPoolExecutor类.本章,我们通过分析Th ...

  3. java多线程系类：JUC线程池：03之线程池原理（二）（转）

    概要 在前面一章"Java多线程系列--"JUC线程池"02之 线程池原理(一)"中介绍了线程池的数据结构,本章会通过分析线程池的源码,对线程池进行说明.内容包 ...

  4. Java多线程系列--“JUC线程池”06之 Callable和Future

    概要 本章介绍线程池中的Callable和Future.Callable 和 Future 简介示例和源码分析(基于JDK1.7.0_40) 转载请注明出处:http://www.cnblogs.co ...

  5. Java多线程系列--“JUC线程池”03之 线程池原理(二)

    概要 在前面一章"Java多线程系列--“JUC线程池”02之 线程池原理(一)"中介绍了线程池的数据结构,本章会通过分析线程池的源码,对线程池进行说明.内容包括:线程池示例参考代 ...

  6. Java多线程系列--“JUC线程池”04之 线程池原理(三)

    转载请注明出处:http://www.cnblogs.com/skywang12345/p/3509960.html 本章介绍线程池的生命周期.在"Java多线程系列--“基础篇”01之 基 ...

  7. Java多线程系列--“JUC线程池”05之 线程池原理(四)

    概要 本章介绍线程池的拒绝策略.内容包括:拒绝策略介绍拒绝策略对比和示例 转载请注明出处:http://www.cnblogs.com/skywang12345/p/3512947.html 拒绝策略 ...

  8. Java - "JUC线程池" 架构

    Java多线程系列--“JUC线程池”01之 线程池架构 概要 前面分别介绍了"Java多线程基础"."JUC原子类"和"JUC锁".本章介 ...

  9. Java - "JUC线程池" ThreadPoolExecutor原理解析

    Java多线程系列--“JUC线程池”02之 线程池原理(一) ThreadPoolExecutor简介 ThreadPoolExecutor是线程池类.对于线程池,可以通俗的将它理解为"存 ...

随机推荐

  1. Oracle中修改某个字段可以为空

    待修改字段假定为:shuifen 1.当该字段为空时,可直接修改: alter table reportqymx modify shuifen null; 2.当待修改字段不为空时:新增一列把要改变的 ...

  2. strtol函数的用法——字符串转长整形

    /* strtol example */ #include <stdio.h> /* printf */ #include <stdlib.h> /* strtol */ in ...

  3. SecureCRT工具如何连接本地虚拟机

    1,1.打开虚拟机,查看当前虚拟机的IP地址,如下图 2.运行本地计算机安装的SecureCRT连接工具 3.在工具打开界面的窗口中选择快速连接按钮 4.在弹出的连接窗口中输入刚才查看的虚拟机的IP地 ...

  4. commons-dbutils使用介绍,commons-dbutils是JDBC的替代品

    commons-dbutils是Apache开源组织提供的用于操作数据库的工具包.今天为大家介绍一下该包的常用方法. 对于数据库的操作无外乎增删改查,而增删改本质上可以归为一类,操作方式相同,只是SQ ...

  5. (转载) 从0开始搭建SQL Server AlwaysOn 第三篇（配置AlwaysOn）

    这一篇是从0开始搭建SQL Server AlwaysOn 的第三篇,这一篇才真正开始搭建AlwaysOn,前两篇是为搭建AlwaysOn 做准备的 步骤 这一篇依然使用step by step的方式 ...

  6. Qt读写三种文件，QSettings读ini配置文件，QJsonDocument读JSON文件，QDomDocument读xml文件

    第一种INI配置文件 .ini 文件是Initialization File的缩写,即初始化文件. 除了windows现在很多其他操作系统下面的应用软件也有.ini文件,用来配置应用软件以实现不同用户 ...

  7. mac 安装 报错 "/usr/local/include/stdint.h:2:10: error: #include nested too deeply"

    报错详细信息 构建错误 - “#include嵌套太深” /usr/local/include/stdint.h:2:10: error: #include nested too deeply #in ...

  8. 第十二周助教工作总结——NWNU李泓毅

    助教博客链接:https://www.cnblogs.com/NWNU-LHY/ 本次作业的要求:基于原型的团队项目需求调研与分析:https://www.cnblogs.com/nwnu-daizh ...

  9. 北漂IT男返乡2年的三线楼市观察（宜昌夷陵篇）-原创

    一直想写点什么,这段时间总算有空,好嘞,正好有兴致来写一写楼市相关的文章以饕读者和粉丝朋友. 宜昌?说宜昌您可能不知道,但是说三峡大坝您就知道了 最近这两年,因为小宝的降临,我多半时间待在老家宜昌陪伴 ...

  10. python matplotlib生成图形

    y=2x+3 import matplotlib.pyplot as plt#约定俗成的写法plt #首先定义两个函数(正弦&余弦) import numpy as np #plt.figur ...