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Java Java Objects (Retired) Creating the MVP Current Progress

Gi Devs
Gi Devs
12,171 Points
Posted by Gi Devs
Gi Devs
12,171 Points

non-static method can't be referenced

I'm getting an error from my displayProgress

here is the error

Hangman.java:5: error: non-static method displayProgress() cannot be referenced from a static context                                               
            Prompter.displayProgress();                                                                                                             
                    ^                                                                                                                               
Hangman.java:12: error: non-static method displayProgress() cannot be referenced from a static context                                              
            Prompter.displayProgress();                                                                                                             
                    ^

and here are the 2 peices of coade

prompter.java 
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("please enter a letter:   ");
            char guess = guessAsString.charAt(0);
            return mGame.applyGuess(guess);
      }

      public void displayProgress() {
            System.out.printf("try to solve: 5s \n", mGame.currentProgress());
      }
}
hangman.java 
public class Hangman {
      public static void main (String[] args) {
            Game game = new Game("code");
            Prompter prompter = new Prompter(game);
            Prompter.displayProgress();
            boolean isHit = prompter.promptForGuess();
            if (isHit) {
                  System.out.println("We got a hit!");
            } else { 
                  System.out.println("nope sorry");
            }
            Prompter.displayProgress();
      }
}

[MOD: edited code block]

Gi Devs
Gi Devs
12,171 Points
Gi Devs
Gi Devs
12,171 Points

I got it to work by chaning mGame and displayProgress to statics but I feel like this may cause problems later on. . . whats the proper solution

Brecht Philips
Brecht Philips
8,863 Points
Brecht Philips
Brecht Philips
8,863 Points

in the hangman class you made a syntax mistake You have Prompter.displayProgress(); => Prompter is your class and you named the object prompter try instead this prompter.dispalyProgress();

1 Answer

Steve Hunter
Steve Hunter
57,712 Points
Steve Hunter
Steve Hunter
57,712 Points

Yes, Brecht is correct. You have called your method on the class itself, rather than the instance of the class. So, chain your method calls on prompter not Prompter and that should fix those issues.

Steve.