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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));