[Ch15] Code magnets - maybe this can help me show futures? Right now it shows...

package ch15;

import java.util.concurrent.ExecutionException;

import java.util.concurrent.ExecutorService;

import java.util.concurrent.Executors;

import java.util.concurrent.Future;

public class TestThreads {

  public static void main(String[] args) {

  public static void main(String[] args) throws InterruptedException, ExecutionException {

    ExecutorService pool = Executors.newFixedThreadPool(2);

    pool.execute(() -> {

    Future<?> future1 = pool.submit(() -> {

      Accum a = Accum.getInstance();

      for (int i = 0; i < 98; i++) {

        a.updateCounter(1000);

      }

    });

    pool.execute(() -> {

    System.out.println(future1.isDone());

    Future<?> future2 = pool.submit(() -> {

      Accum a = Accum.getInstance();

      for (int i = 0; i < 99; i++) {

        a.updateCounter(1);