1     public static boolean checkFormat(String sentence){
2         return sentence.matches("^[A-Z].+\\.$");
3     }

1     public static void test(){
2         String knights = 
3                 "Then, when you have found the shrubbery,"
4                 + "you must cut down the mightiest tree in the forest... "
5                 + "with... a herring";
6         String newString = Arrays.toString(knights.split(" "));
7         System.out.println(newString);
8     }

1     public static void test(){
2         String knights = 
3                 "Then, when you have found the shrubbery,"
4                 + "you must cut down the mightiest tree in the forest... "
5                 + "with... a herring";
6         String newKnights = knights.replaceAll("[AaEeIiOoUu]", "_");
7         System.out.println(newKnights);
8     }