Java数组转集合

public static void main(String[] args) {
    String[] array = {"apple", "banana", "orange"};
    List<String> list = Arrays.asList(array);
}

int[] intArr = new int[]{1, 2, 3};
List<Integer> list = Arrays.stream(intArr).boxed().collect(Collectors.toList());
// 基本类型数组不能通过Arrays.asList()转为集合
List<int[]> ints = Arrays.asList(intArr);

String s = "hello";
List<Character> collect = s.chars().mapToObj(item -> (char) item).collect(Collectors.toList());