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Java

Posted by Aaron Williams
Aaron Williams
1,702 Points

java.lang.NullPointerException Error

I am not sure why this is happening.

Aaron Williams
Aaron Williams
1,702 Points 
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();
        String guessAsString = console.readLine("Enter a letter:   ");
        char guess = guessAsString.charAt(0);
        return mGame.applyGuess(guess);
    }

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

2 Answers

Craig Dennis
STAFF
Craig Dennis
Treehouse Teacher
Craig Dennis
Craig Dennis
Treehouse Teacher

This happening on Workspaces or from an IDE? Console is only available if it is setup, and unfortunately most IDEs do not set it up.

Aaron Williams
Aaron Williams
1,702 Points
Aaron Williams
Aaron Williams
1,702 Points

It is in eclipse also I found when I ran it on the treehouse workspace it displayed promptForGuess and displayProgress twice