Little help, please?

public class Hangman {    
  public static void main(String[] args) {
    // Enter amazing code here:
    Game game = new Game("treehouse");
    Prompter prompter = new Prompter(game);
    boolean isHit = prompter.promptForGuess();
    if (isHit) {
      System.out.println("You got a hit!");
    } else {
      System.out.println("Whoops, you missed!");
    }
  }
}

import java.io.Console;

public class Prompter {
  private Game mGame;

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

  public boolean promptForGuess() {
    Console console = System.console();
    String guessAsString = console.readLine("Enter a letter:  ");
    char guess = guessAsString.charAt(0);
    return mGame.applyGuess(guess);
  }
}

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

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

./Game.java:18: error: missing return statement                                                       
  }                                                                                                   
  ^