// array of 5 strings
String[] arr = new String[5]
arr[0] = "Happy";
arr[1] = "Birthday";
arr[2] = "To";
// etc...
String[] vowels = { "a", "e", "i", "o", "u" };
System.out.println(vowels);
System.out.println(Arrays.toString(vowels));
//store input string in an array with an length unknown
Scanner scanner = new Scanner(System.in);
String[] string = scanner.nextLine().split(" ");