Text to Morse

 public static void main(String[] args){
            Scanner input = new Scanner(System.in);

            char[] letters = { ' ', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',};
            String[] morseLetters = { "    ", ". ___", "___ . . .", "___ . ___ .", "___ . .", ".", ". . ___ .", "___ ___ .", ". . . .", ". .", ". ___ ___ ___", "___ . ___", ". ___ . .",  "___ ___", "___ .", "___ ___ ___", ". ___ ___ .", "___ ___ . ___", ". ___ .", ". . .", "_", ". . ___", ". . . ___", ". ___ ___", "___ . . ___", "___ . ___ ___", "___ ___ . ."};

            String textToChange = "";
            String newText = "";
            System.out.println("Enter text you want to change to Morse code");
            textToChange = input.nextLine();

            textToChange = textToChange.toLowerCase();

            for (int i = 0; i < textToChange.length(); i++) {
              for (short j = 0; j < 26; j++) {
                if (textToChange.charAt(i) == letters[j]) {
                  newText += morseLetters[j];
                  newText += "   ";

                  break;
                }
              }
            }

            System.out.println("Text in Morse Code");
            System.out.println(newText);
          }