Hangman

Hangman Class

/*
 *HW01-HANGMAN
 *HANGMAN CLASS
 *Author:
 *@Umut Can Turan
 *21401929
 */
public class Hangman {

	// Properties

	StringBuffer secretWord;
	StringBuffer allLetters;
	StringBuffer usedLetters;
	int numberOfIncorrectTries;
	int maxAllowedIncorrectTries;
	StringBuffer knownSoFar;
	final int MAXTRIES = 6;

	// Constructor
	public Hangman() {
		numberOfIncorrectTries = 0;
		maxAllowedIncorrectTries = MAXTRIES;
		allLetters = new StringBuffer("abcdefghijklmnopqrstuvwxyz");
		usedLetters = new StringBuffer("");
		secretWord = chooseSecretWord();
		knownSoFar = new StringBuffer("");

		for (int count = 0; count < secretWord.length(); count++) {
			knownSoFar.append("*");
		}
	}

	// Methods

	public StringBuffer chooseSecretWord() {

		final int NUMBER_OF_WORDS;
		int counter;
		int wordIndex;

		NUMBER_OF_WORDS = 5;

		StringBuffer[] words = new StringBuffer[NUMBER_OF_WORDS];

		words[0] = new StringBuffer("Sea");
		words[1] = new StringBuffer("Saint");
		words[2] = new StringBuffer("Leftie");
		words[3] = new StringBuffer("Abraham");
		words[4] = new StringBuffer("Pine");

		// Find a random integer to get random index of array
		wordIndex = (int) (Math.random() * NUMBER_OF_WORDS-1);

		return words[wordIndex];
	}

	public int tryThis(char letter) {

		int returnnum = 0;
		int counter = 0;

		if ((letter > 64 && letter < 91) || (letter > 96 && letter < 123)) {

			if (!hasLost()) {

				String used = getUsedLetters();
				char[] usedletters = used.toLowerCase().toCharArray();
				String all = getAllLetters();
				char[] allletters = all.toLowerCase().toCharArray();
				String secret = secretWord.toString();
				char[] secretW = secret.toLowerCase().toCharArray();

				int lengthused = usedletters.length;
				int lengthall = allletters.length;
				int lengthSec = secretW.length;
				int knownCount = 0;

				for (int i = 0; i < lengthused; i++)
					if (letter == usedletters[i])
						counter++;

				if (counter > 0)
					returnnum = -2; // Letter is already used!

				else {
					for (int i = 0; i < lengthSec; i++) {
						if (secretW[i] == letter) {
							knownCount++;
							knownSoFar.replace(i, i + 1, String.valueOf(letter));
							usedLetters.append(letter);
							
							for(int count=0; count<lengthall;count++){
								if(letter==allletters[count]){
									allLetters.delete(count,count+1);
								}
							}
							/*
							 * BURADA ALL LETTERSDAN BU HARFİ SİLMEM GEREKİYOR
							 * Kİ KULLANICI KULLANILMAMIŞ KALAN HARFLERİ
							 * GÖREBİLSİN
							 */
						}
						returnnum = knownCount;
					}
					if (knownCount == 0) {
						numberOfIncorrectTries++;
						usedLetters.append(letter);
						returnnum = knownCount;
					}

				}

			}

			else
				returnnum = -3; // The Game is OVER!

		}

		else
			returnnum = -1; // The input is invalid!!

		return returnnum;
	}

	public String getAllLetters() {

		return allLetters.toString();

	}

	public String getUsedLetters() {

		return usedLetters.toString();

	}

	public int getNumOfIncorrectTries() {

		return numberOfIncorrectTries;
	}

	public int getMaxAllowedIncorrectTries() {

		return maxAllowedIncorrectTries;
	}

	public String getKnownSoFar() {

		return knownSoFar.toString();
	}

	public boolean isGameOver() {

		boolean result;

		result = false;

		if ((numberOfIncorrectTries >= maxAllowedIncorrectTries)
				|| (knownSoFar.toString().toLowerCase().equals(secretWord.toString().toLowerCase()))) {

			result = true;
		}

		return result;

	}

	public boolean hasLost() {

		return (numberOfIncorrectTries >= maxAllowedIncorrectTries);
	}
}

Hangman Test

/*
 *HW01-HANGMAN
 *TEST CLASS
 *Author:
 *@Umut Can Turan
 *21401929
 */

import java.util.Scanner;

public class Test {
	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);

		// variables
		Hangman hangman = new Hangman();
		String letter;
		int result;

		// displaying the secret word
		do {
			System.out.println();
			System.out.println("--------------------HANGMAN-----------------");
			System.out.println();
			System.out.println("Secret Word is :" + hangman.getKnownSoFar());
			System.out.println("Unused letters are :" + hangman.getAllLetters());
			System.out.println("Used letters so far:" + hangman.getUsedLetters());
			System.out.println((6 - hangman.getNumOfIncorrectTries()) + " TRIES LEFT,PLEASE BE CAREFUL!");

			// to take the input from the user

			System.out.print("Enter a letter :");
			letter = scan.next();
			if (letter.length() != 1) {
				System.out.println("You have to enter a single letter!");
			} else {
				result = hangman.tryThis(letter.charAt(0));

				// to check the correction of inputs
				if (result == -1)
					System.out.println("\n"+"Invalid input: " + letter.toUpperCase());

				else if (result == -2) {
					System.out.println("\n"+"Letter " + letter.toUpperCase() + " is already used!");
					System.out.println("Please try another letter!");
				}

				else if (result == -3)
					System.out.println("Game Over...");

				// if the letter is not in the secret word
				else if (result == 0) {
					System.out.println("\n"+"Letter " + letter.toUpperCase() + " is not in the secretWord.");

				}

				// if the letter is in the secret word
				else if (result > 0) {
					hangman.getKnownSoFar();
					System.out.println("\n"+"Congratulations! " + letter.toUpperCase() + " is succesful!");
				}

			}
		} while (!hangman.isGameOver());
		// when the player won the game
		if (hangman.knownSoFar.toString().toLowerCase().equals(hangman.secretWord.toString().toLowerCase()))
			System.out.println(" You Win! attaboy! :)) ");
		else
			System.out.println(" You Lost! :((");
		System.out.println("The Secret Word was " + hangman.secretWord.toString().toUpperCase());
	}

}