Accessing a variable inside the loop, from outside.

Question

I'm using Eclipse to do the "Hangman task", whenever I run the program....

 public boolean promptForGuess()

 {
        Scanner keyboard = new Scanner(System.in);

                boolean isHit = false;
                boolean isValidGuess = false;

            while (! isValidGuess)
        {
            System.out.println("Enter a letter: ");
            String guessAsString = keyboard.next();
             char guess = guessAsString.charAt(0);
        }


        try
        {
            isHit = mGame.applyGuess(guess);
            isValidGuess = true;
        }

        catch (IllegalArgumentException iae)
        {
            System.out.printf("%s. Please try again.\n", iae.getMessage());
        }

        return isHit;

    }

I get this error...

You have Exception in thread "main" 7 tries left to solve: --------- java.lang.Error: Unresolved compilation problem: guess cannot be resolved to a variable

at Prompter.promptForGuess(Prompter.java:39) at Prompter.play(Prompter.java:17) at Hangman.main(Hangman.java:10)

Answer 1 · 2016-08-30T16:53:08Z

August 30, 2016 4:53pm

Try to put declaration of char guess; outside of the loop. should work...:

        char guess;
        while (! isValidGuess) {
            System.out.println("Enter a letter: ");
            String guessAsString = keyboard.next();
             guess = guessAsString.charAt(0);
        } 
        // here guess will be available

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Adrian Nacor

Adrian Nacor

Accessing a variable inside the loop, from outside.

1 Answer

Alexander Nikiforov

Alexander Nikiforov