lamda 获取当前循环数，AtomicInteger

需求：获取对象数据赋值给新的对象，并给对象排序，因为可以在页面上变更顺序，所以需要存储下标进行排序

方法一：

  public static void main(String[] args) {
    List<NwWorkOrderFinish> list = new ArrayList<>();
    list.add(new NwWorkOrderFinish(1, "1", "张三"));
    list.add(new NwWorkOrderFinish(2, "1", "李四"));
    list.add(new NwWorkOrderFinish(3, "1", "王五"));

    Stream.iterate(1, i -> i + 1).limit(list.size()).forEach(index -> {
      System.out.println(index);
    });
  }

方法二：

使用原子类AtomicInteger

  public static void main(String[] args) {
    List<NwWorkOrderFinish> list = new ArrayList<>();
    list.add(new NwWorkOrderFinish(1, false, "张三"));
    list.add(new NwWorkOrderFinish(2, false, "李四"));
    list.add(new NwWorkOrderFinish(3, false, "王五"));

    AtomicInteger atomicInteger = new AtomicInteger(0);
    list.stream().forEach(nwWorkOrderFinish -> {
      atomicInteger.decrementAndGet();
      System.out.println(atomicInteger.get());
    });
  }