java iterator

2019-11-07 2020-05-20

java

a few seconds read (About 68 words)

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遍历删除集合中的元素

public static void main(String[] args) {

    List<Integer> nums = new ArrayList<>(Arrays.asList(1, 2, 3, 4));

    // java8 之前删除集合元素
    Iterator<Integer> iterator = nums.iterator();
    while (iterator.hasNext()) {
        int num = iterator.next();
        if (num % 2 == 0) {
            iterator.remove();
        }
    }

    System.out.println(nums);
}

java8 应该使用stream。

1	nums = nums.stream().filter(num -> num % 2 == 0).collect(toList());

java

java iterator

遍历删除集合中的元素

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