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Start your free trialISAIAH S
1,409 Points./Game.java:13: error: invalid method declaration; return type requir...
My error:
./Game.java:13: error: invalid method declaration; return type requir
ed
private validateGuess(char letter) {
^
./Game.java:21: error: incompatible types: unexpected return value
return letter;
^
./Game.java:25: error: cannot find symbol
letter = validateGuess(letter);
^
symbol: method validateGuess(char)
location: class Game
./Prompter.java:26: error: cannot find symbol
isHit = mGame.applyGuess(guess);
^
symbol: variable guess
location: class Prompter
4 errors
My workspaces:
Game.java:
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 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(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();
}
}
Hangman.java:
public class Hangman {
public static void main(String[] args) {
// Enter amazing code here:
Game game = new Game("treehouse");
Prompter prompter = new Prompter(game);
prompter.play();
}
}
Prompter.java:
import java.io.Console;
public class Prompter {
private Game mGame;
public Prompter(Game game) {
mGame = game;
}
public void play() {
while(mGame.getRemainingTries() > 0) {
displayProgress();
promptForGuess();
}
}
public boolean promptForGuess() {
Console console = System.console();
boolean isHit = false;
boolean isValidGuess = false;
while (! isValidGuess) {
String guessAsString = console.readLine("Enter a letter: ");
char guess = guessAsString.charAt(0);
}
try {
isHit = mGame.applyGuess(guess);
isValidGuess = true;
} catch (IllegalArgumentException iae) {
console.printf("%s. Please try again.", iae.getMessage());
}
return isHit;
}
public void displayProgress() {
System.out.printf("You have %d tries left to solve: %s\n",
mGame.getRemainingTries(),
mGame.getCurrentProgress());
}
}
Thanks,
ISAIAH S
1 Answer
Miroslav Kovac
11,454 Pointsprivate validateGuess(char letter)
should be
private char validateGuess(char letter)
ISAIAH S
1,409 PointsThere's still an error:
./Prompter.java:26: error: cannot find symbol
isHit = mGame.applyGuess(guess);
^
symbol: variable guess
location: class Prompter
1 error
Miroslav Kovac
11,454 PointsYou have 'char guess' definition inside th while cycle. So the compiler cannot recognize the guess variable outside of cycle.
char guess; while (! isValidGuess) { String guessAsString = console.readLine("Enter a letter: "); guess = guessAsString.charAt(0); }
ISAIAH S
1,409 PointsThanks a LOT
Craig Dennis
Treehouse TeacherCraig Dennis
Treehouse TeacherProtip: If you do three back ticks and then the filename.java it does cool stuff