JDK 1.8 forEach 循环

List<Integer> numbers = new ArrayList<>();

//no.1
numbers.forEach((Integer integer) -> {
    System.out.println(integer);
});

//no.2
numbers.forEach(integer -> {
    System.out.println(integer);
});

//no.3
numbers.forEach(integer -> System.out.println(integer));

//no.4
numbers.forEach(System.out::println);

//no.5
numbers.forEach(new MyConsumer());

MyConsumer类如下,主要是接口的实现

class MyConsumer implements Consumer<Integer>{

    @Override
    public void accept(Integer integer) {
        System.out.println(integer);
    }
}

转载自： https://blog.csdn.net/dounine/article/details/53357914