https://stackoverflow.com/questions/1921181/arraylist-of-string-arrays
List<String[]> addresses = new ArrayList<String[]>();
String[] addressesArr = new String[3];
addressesArr[0] = "zero";
addressesArr[1] = "one";
addressesArr[2] = "two"; // String[] 배열에 원소 저장 후
addresses.add(addressesArr); //Arraylist에 String[] 저장
