ArrayList<Integer> arrayList=new ArrayList<>();

        for (int i = 0; i <10; i++) {

            arrayList.add(i);

        }

        System.out.println("迭代器第一次遍历");

            Iterator iterator=arrayList.iterator();

            while(iterator.hasNext()){

                System.out.print(iterator.next());

            }

        System.out.println("");

        System.out.println("迭代器第二次遍历");

        Iterator iterator0=arrayList.iterator();

        while(iterator.hasNext()){

            System.out.print(iterator0.next());

        }

 ArrayList<Integer> arrayList=new ArrayList<>();

        for (int i = 0; i <10; i++) {

            arrayList.add(i);

        }

        System.out.println("迭代器第一次遍历");

            Iterator<Integer> iterator=arrayList.iterator();

            while(iterator.hasNext()){

             int num=iterator.next();

                System.out.print(num);

                if(num==5){

                    break;

                }

            }

        System.out.println("");

        System.out.println("输出其余元素：");

        iterator.forEachRemaining(new Consumer<Integer>() {

            @Override

            public void accept(Integer s) {

                System.out.print(s);

            }

        });