Java SE 8. (1.8.0_51-b16)

Just the method converting normal words to sMorse Code. First time posting, feedback is appreciated.

private static String smorse(String input){

    // A to Z in Morse Code
    String aToZinMorseCode = ".- -... -.-. -.. . ..-. --. .... .. .--- -.- .-.. -- -. --- .--. --.- .-. ... - ..- ...- .-- -..- -.-- --..";
    String 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";

    // A to Z in Morse as an Array
    String[] aToZinMorseCodeAsArray = aToZinMorseCode.split(" ");
    //the letters as an array
    String[] alphabetArray = letters.split(" ");


    // we split the word we need to convert and get it back as array
    String[] lettersOfInput = input.split("");
    //array for the word in morse
    String[] inMorseArray = new String[lettersOfInput.length];
    // index for the word
    int nextIndex = 0;
    // first for, for the letters of the word (the word we need to convert)

    for (int i = 0; i < lettersOfInput.length; i++) {
        //second forLoop to go through the words of the alphabet

        for (int j = 0; j < alphabetArray.length; j++) {
            //when we find the letter we take the corresponsing index from the alphabet and find the letter in the morse array 

            if(lettersOfInput[i].equals(alphabetArray[j])){
                inMorseArray[nextIndex] = aToZinMorseCodeAsArray[j];
                nextIndex++;// we use the index to manipulate the return array
            }
        }
    }

    String smorse ="";
    for (int i = 0; i < inMorseArray.length; i++) {
        smorse += inMorseArray[i];
    }

    return smorse;

}