Keeps on looping

What is wrong with my code? it keeps on looping even when I solved it

import java.io.Console;

public class Prompter { private Game mGame;

 public Prompter(Game game) {
  mGame = game;
}

public void play() {
 while (mGame.getRemainingTries() > 0 && !mGame.isSolved()) {
  displayProgress();
  promptForGuess();
 }
  if (mGame.isSolved()) {
    System.out.printf("Congratulations you won with %d tries remaining.\n",
                      mGame.getRemainingTries());
  } else {
    System.out.printf("Bummer the word was %s.  :(\n",
                      mGame.getAnswer());
  }
}

 public boolean promptForGuess() {
  Console console = System.console();
   boolean isHit = false;
   boolean isValidGuess = false;
   while (! isValidGuess) {
     String guessAsString = console.readLine("Ente a letter:  ");
     try {
       isHit = mGame.applyGuess(guessAsString);
       isValidGuess = true;
     } catch (IllegalArgumentException iae) {
       console.printf("%s.  Please try again.\n", iae.getMessage());
     }
   }
   return isHit;
}

public void displayProgress() {
 System.out.printf("You have %d tries left to solve:  %s\n", 
                   mGame.getRemainingTries(),
                   mGame.getCurrentProgress());
}

}

public class Game { public static final int MAX_MISSES = 7; private String mAnswer; private String mHits; private String mMisses;

public Game(String answer) { mAnswer = answer; mHits = ""; mMisses = ""; }

private char validateGuess (char letter) { if (! Character.isLetter(letter)) { throw new IllegalArgumentException("A letter is required"); } letter = Character.toLowerCase(letter); if (mMisses.indexOf(letter) >= 0 || mHits.indexOf(letter) >= 0) { throw new IllegalArgumentException(letter + " has already been guessed"); } return letter; }

public boolean applyGuess(String letters) { if (letters.length() == 0) { throw new IllegalArgumentException("No letter found"); } return applyGuess(letters.charAt(0)); }

public boolean applyGuess(char letter) { letter = validateGuess(letter); boolean isHit = mAnswer.indexOf(letter) >= 0; if (isHit) { mHits += letter; } else { mMisses += letter; } return isHit; }

public String getCurrentProgress() { String progress = ""; for (char letter: mAnswer.toCharArray()) { char display = '-'; if (mHits.indexOf(letter) >= 0) { display = letter; } progress += display; } return progress; }

public int getRemainingTries() { return MAX_MISSES - mMisses.length(); }

public String getAnswer() { return mAnswer; }

public boolean isSolved() { return getCurrentProgress().indexOf('-') == -1; }

}