일반 List to Array / Array to List

1. List -> Array(배열)

ArrayList<String> arrayList = new ArrayList<>();

arrayList.add("Test1");

arrayList.add("Test2");

arrayList.add("Test3");

String[] array = arrayList.toArray(new String[arrayList.size()]);

2. Array(배열) -> List

String[] array = new String[3];

array[0] = "Test1";

array[1] = "Test2";

array[2] = "Test3";

ArrayList<String> arrayList = new ArrayList<>(Arrays.asList(array));