Java高并发模型

1 前言

汇总自己用到的高并发模型

2 代码

 

package MainFixedFuc;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class SingleTest {
    public static void main(String[] args) {
        // 创建一个定长线程池，可控制线程最大并发数，超出的线程会在队列中等待
        ExecutorService executorService = Executors.newFixedThreadPool(10);
        for (int k = 0; k < 10; k++) {
            final int t = k;
            executorService.submit(new Runnable() {
                                       @Override
                                       public void run() {

                                           try {
                                               getID(t);
                                           } catch (Exception e) {

                                           } finally {
                                           }
                                       }
                                   }
            );

        }

        // 平滑的关闭ExecutorService,当所有提交任务执行完毕，线程池即被关闭
        executorService.shutdown();

        while (true) {
            // System.out.println("等待线程执行完成");
            // isTerminated当调用shutdown()方法后，并且所有提交的任务完成后返回为true
            if (executorService.isTerminated()) {
                //  System.out.println("线程执行完成");
                break;
            }
        }

        System.out.println("多线程执行完成");

    }

    public static int getID(int id) throws Exception {
        Thread.sleep(3000);
        System.out.println("任务id: " + id);
        return id;
    }
}