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

public class test {
    public static void main(String[] args) {
        ExecutorService executorService = Executors.newFixedThreadPool(10);
        for (int k = 0; k < 10; k++) {
            final int t = k;
            executorService.submit(new Runnable() {
                @Override
                public void run() {
                    getID(t);
                }
            });

        }

        // 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) {
            // 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()) {
                break;
            }
        }

    }

    public static int getID(int id) {
        return id;
    }
}