Java lambda java

lambda.java

int[] nums = new int[]{3, 5, 9, 2, 6};
nums = IntStream.of(nums).boxed().sorted(Comparator.reverseOrder()).mapToInt(i -> i).toArray();

List<Integer> list = new ArrayList<>();
int[] arr = list.stream().mapToInt(i -> i).toArray();

// convert array to string
Arrays.toString(new int[]{1, 2, 3});