[JAVA] Array를 List로, List를 Array로

From Array to List

Integer[] numArray = {1,2,3,4,5};
List<Integer> numList = Arrays.asList(numArray);        

From List to Array

List<Integer> numList = new ArrayList<Integer>();
numList.add(1);
numList.add(2);
numList.add(3);
numList.add(4);
numArray = numList.toArray(new Integer[numList.size()]);

추가

From Array to ArrayList

Integer[] numArray = {1,2,3,4,5};
ArrayList<Integer> numList = new ArrayList<Integer>(Arrays.asList(numArray));

int[] numArray = {1,2,3,4,5};
ArrayList<Integer> numList = new ArrayList<Integer>(Arrays.stream(numArray).boxed().collect(Collectors.toList()));

//String -> ArrayList<Character>
String s = "test";
ArrayList<Character> ss = new ArrayList<Character>(s.chars().mapToObj(x -> (char)x).collect(Collectors.toList()));