Feedback

public class MorseCodeApp {
    public static void main(String[] args) {
        System.out.println("Enter your text to convert to morse code and play it ");
        new letterMatcher();
    }
}
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import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;

public class letterMatcher extends Initialize {

    letterMatcher(){
        loopTroughInput();
    }
    private void loopTroughInput(){
        int i = 0;
        Scanner input = new Scanner(System.in);
        String sampleMorseCodeInput = input.nextLine().toUpperCase();
        while (i < sampleMorseCodeInput.length()) {
            eachLetterToMorseCode(sampleMorseCodeInput, i);
            pathForAudio(sampleMorseCodeInput, i);
            i++;
        }
    }
    private void eachLetterToMorseCode(String morse, int index) {
        Map<Character, String> morseCode = new HashMap<>();
        morseCode.put('A', ".- ");
        morseCode.put('B', "-... ");
        morseCode.put('C', "-.-. ");
        morseCode.put('D', "-.. ");
        morseCode.put('E', ". ");
        morseCode.put('F', "..-. ");
        morseCode.put('G', "--. ");
        morseCode.put('H', ".... ");
        morseCode.put('I', ".. ");
        morseCode.put('J', ".--- ");
        morseCode.put('K', "-.- ");
        morseCode.put('L', ".-.. ");
        morseCode.put('M', "-- ");
        morseCode.put('N', "-. ");
        morseCode.put('O', "--- ");
        morseCode.put('P', ".--. ");
        morseCode.put('Q', "--.- ");
        morseCode.put('R', ".-. ");
        morseCode.put('S', "... ");
        morseCode.put('T', "- ");
        morseCode.put('U', "..- ");
        morseCode.put('V', "...- ");
        morseCode.put('W', ".-- ");
        morseCode.put('X', "-..- ");
        morseCode.put('Y', "-.-- ");
        morseCode.put('Z', "--.. ");
        morseCode.put(' ', " / ");
        // goes through the key and values, filter the map for keys that match the index of the char, gets and prints the values
        morseCode.entrySet().stream().filter(map ->         map.getKey().equals(morse.charAt(index))).map(Map.Entry::getValue).forEach(System.out::print);
    }
}
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import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Clip;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.UnsupportedAudioFileException;

import java.io.File;
import java.io.IOException;

public class Initialize {
    public void pathForAudio(String text, int index) {
        String filePath = "src/main/resources/" + text.charAt(index) + ".wav";
        audioSetUp(filePath);
        sleepConditions(text, index);
    }

    private void audioSetUp(String filePath)  {
        try {
            AudioInputStream audioInputStream = AudioSystem.getAudioInputStream(new File(filePath).getAbsoluteFile());
            Clip clip = AudioSystem.getClip();
            clip.open(audioInputStream);
            clip.start();
        }catch (UnsupportedAudioFileException | LineUnavailableException | IOException e) {
            e.printStackTrace();
        }
    }


    private void sleepConditions(String morse, int index) {
        try {
            if (Character.isWhitespace(morse.charAt(index))) {
                Thread.sleep(700);
            } else {
                indexConditions(index);
            }
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
    private void indexConditions(int index) throws InterruptedException {
        if (index < 3) Thread.sleep(1300);
        else Thread.sleep(1000);
    }
}