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Hangman

26 May 2017 | MOOC

I was going to continue on Eclipse with this last exercise of the Week 2, but realize it has many components and methods of its own. I decided to use NetBeans, because I want to start Week 3 already. I want to be at Week 11 by now.

In NetBeans, this Exercise #42 has methods ready:

  • hangman.gameOn()
    • shows if game is on
  • hangman.printStatus()
    • prints the game status
  • hangman.printWord()
    • prints the word user tries to guess
  • hangman.printMan()
    • prints the hangman
  • hangman.guess(String Letter)
    • guesses the letter
  • printMenu()
    • menu set up already

What is already there:

public static void main(String[] args) {
    Scanner reader = new Scanner(System.in);
    Hangman hangman = new Hangman();

    System.out.println("***********");
    System.out.println("* HANGMAN  *");
    System.out.println("***********");
    System.out.println("");
    printMenu();
    System.out.println("");

    // PROGRAM YOUR SOLUTION HERE

    System.out.println("Thank you for playing!");
}

public static void printMenu() {
    System.out.println(" * menu *");
    System.out.println("quit   - quits the game");
    System.out.println("status  - prints the game status");
    System.out.println("a single letter uses the letter as a guess");
    System.out.println("an empty line prints this menu");
}

Our tasks…

  • create a loop, if a command = ‘quit’, then break the loop
  • if command = “status”, trigger method hangman.printStatus()
  • if command is a single letter, set it to hangman.guess(String Letter)
  • if command is empty, set it to printMenu()
  • if command is not ‘quit’, set it to hangman.printMan() and hangman.printWord()

The first step is making a loop, my first thought is “while (hangman.gameOn()”. Let’s make this game. Maybe should throw in string status too.

while (hangman.gameOn()) {
    System.out.println("Type a command: ");
    String quit = "quit";

    String command = reader.nextLine();
    if (command.equals(quit)) {
        break;
    } else if (command.equals(status)) {
        hangman.printStatus();
    }
}

The loop is created, and it ends if ‘quit’ is entered, and also prints status if ‘status’ is entered.

  • create a loop, if a command = ‘quit’, then break the loop
  • if command = “status”, trigger method hangman.printStatus()
  • if command is a single letter, set it to hangman.guess(String Letter)
  • if command is empty, set it to printMenu()
  • if command is not ‘quit’, set it to hangman.printMan() and hangman.printWord()

Okay… in the NetBeans on Exercise #42 has a hint saying if (command.length()== 1), I am going to borrow that and insert it in. I think could fit the printMenu() in conditional statment. What else could we do better than that?

String command = reader.nextLine();
    if (command.equals(quit)) {
        break;
    } else if (command.equals(status)) {
        hangman.printStatus();
    } else if (command.length() == 1) {
        hangman.guess(command);
    } else if (command.length() == 0) {
        System.out.println("");
        printMenu();
    }
}
  • create a loop, if a command = ‘quit’, then break the loop
  • if command = “status”, trigger method hangman.printStatus()
  • if command is a single letter, set it to hangman.guess(String Letter)
  • if command is empty, set it to printMenu()
  • if command is not ‘quit’, set it to hangman.printMan() and hangman.printWord()

Down to the last task… I don’t think I need to explain what to do on this part.

import hangman.Hangman;
import java.util.Scanner;

public class HangmanUserInteface {

    public static void main(String[] args) {
        Scanner reader = new Scanner(System.in);
        Hangman hangman = new Hangman();

        System.out.println("***********");
        System.out.println("* HANGMAN  *");
        System.out.println("***********");
        System.out.println("");
        printMenu();
        System.out.println("");

        // PROGRAM YOUR SOLUTION HERE
        while (hangman.gameOn()) {
        System.out.println("Type a command: ");
        String quit = "quit";
        String status = "status";

        String command = reader.nextLine();
            if (command.equals(quit)) {
                break;
            } else if (command.equals(status)) {
                hangman.printStatus();
            } else if (command.length() == 1) {
                hangman.guess(command);
            } else if (command.length() == 0) {
                System.out.println("");
                printMenu();
            }
            hangman.printMan();
            hangman.printWord();
            System.out.println("");
        }

        System.out.println("Thank you for playing!");
    }

    public static void printMenu() {
        System.out.println(" * menu *");
        System.out.println("quit   - quits the game");
        System.out.println("status  - prints the game status");
        System.out.println("a single letter uses the letter as a guess");
        System.out.println("an empty line prints this menu");
    }
}

Move on to Week 3!

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