Need someone to check my code for JAVA hangman. Can't find errors after checking with video code for 1 hour.

public String getCurrentProgress() { // lower case g
        String progress = "";
        char display; // declare before loop
        for (char letter : answer.toCharArray()) {
            display = '-';
            if (hits.indexOf(letter) != -1)
                display = letter;
            progress += display; // move into loop
        }
        return progress; // move into method
    }

public static void main(String[] args) {
        // Your incredible code goes here...
        Game game = new Game("treehouse");
        Prompter prompter = new Prompter(game);
        prompter.displayProgress();
        boolean isHit = prompter.promptForGuess();
        if (isHit) {
            System.out.println("We got a hit!");  // caps on System
        } else {
            System.out.println("Oops missed");
        }
        prompter.displayProgress();
    }