Java Programming Language

Topic: String, Method, Math.Random, Basic Syntax

For this problem, you will implement a variation of the classic word game Hangman.

Here are the requirements for your game:

1. The computer must select a word at random from the list of available words that was provided in words.txt. The functions for loading the word list and selecting a random word have already been provided for you.

2. The game must be interactive; the flow of the game should go as follows:

• At the start of the game, let the user know how many letters the computer's word contains.

• Ask the user to supply one guess (i.e. letter) per round.

• The user should receive feedback immediately after each guess about whether their guess appears in the computer's word.

• After each round, you should also display to the user the partially guessed word so far, as well as letters that the user has not yet guessed.

3. Some additional rules of the game:

• A user is allowed 8 guesses. Make sure to remind the user of how many guesses s/he has left after each round. Assume that players will only ever submit one character at a time (A-Z).

• A user loses a guess only when s/he guesses incorrectly.

• If the user guesses the same letter twice, do not take away a guess - instead, print a message letting them know they've already guessed that letter and ask them to try again.

• The game should end when the user constructs the full word or runs out of guesses. If the player runs out of guesses (s/he "loses"), reveal the word to the user when the game ends.

Output of a losing game

import java.util.ArrayList; import java.util.Scanner; import java.io.File; import java.io.FileNotFoundException;

public class Hangman{ final String WORDLIST_FILENAME = "words.txt";

public Hangman(){ ArrayList wordList = loadWords(); String secretWord = chooseWord(wordList).toLowerCase(); startGame(secretWord); } /** * Returns a list of valid words. Words are strings of lowercase letters. * Depending on the size of the word list, this function may * take a while to finish. */ ArrayList loadWords(){ ArrayList wordList = new ArrayList(); System.out.println("Loading word list from file..."); try{ Scanner input = new Scanner(new File(WORDLIST_FILENAME)); while(input.hasNext()){ wordList.add(input.next()); } } catch(FileNotFoundException ex){ System.out.println("File not found"); } System.out.println(wordList.size() + " " + "words loaded."); return wordList; } /** * wordlist (list): list of words (strings) * Returns a word from wordlist at random */ String chooseWord(ArrayList wordList){ //FILL IN YOUR CODE HERE...

} /** * secretWord: string, the word the user is guessing * lettersGuessed: list, what letters have been guessed so far * returns: boolean, True if all the letters of secretWord are in lettersGuessed; * False otherwise */ boolean isWordGuessed(String secretWord, ArrayList lettersGuessed){ //FILL IN YOUR CODE HERE...

} /** * secretWord: string, the word the user is guessing * lettersGuessed: list, what letters have been guessed so far * returns: string, comprised of letters and underscores that represents * what letters in secretWord have been guessed so far. */ String getGuessedWord(String secretWord, ArrayList lettersGuessed){ //FILL IN YOUR CODE HERE...

} /** * lettersGuessed: list, what letters have been guessed so far * returns: string, comprised of letters that represents what letters have not * yet been guessed. */ String getAvailableLetters(ArrayList lettersGuessed){ //FILL IN YOUR CODE HERE...

} /** * secretWord: string, the secret word to guess. * * Starts up an interactive game of Hangman. * * At the start of the game, let the user know how many * letters the secretWord contains. * * Ask the user to supply one guess (i.e. letter) per round. * * The user should receive feedback immediately after each guess * about whether their guess appears in the computers word. * * After each round, you should also display to the user the * partially guessed word so far, as well as letters that the * user has not yet guessed. * * Follows the other limitations detailed in the problem write-up. */ void startGame(String secretWord){ //FILL IN YOUR CODE HERE...

} public static void main(String[] args){ Hangman hangman = new Hangman(); } }

The Output of a winning game should look like this: Loading word list from file 55900 words loaded Welcome to the game, Hangman! I am thinking of a word that is 4 letters long You have 8 guesses left Available letters abcdefghiiklmopgrstuwwzvz Please guess a letter: a Good guessa- - You have 8 guesses left Available letters: bcdefghiklmopgrst Please guess a letter: a Oops! You've already ques sed that letter: a You have 8 guesses left Available letters: bcdefghiiklmnopgrstuwwzVE Please guess a letter: s Oops! That letter is not in my word: _a You have 7 ruesses left Available letters: bcdefghijklmnopgrtuwzyz Please guess a letter: t Good guess: ta t You have 7 ruesses left Available letters: bcdefghiiklnnopgruwwzvz Please guess a letter: r Oops! That letter is not in my word: ta_ t You have guesses left Available letters Please guess a letter: m Oops! That letter is not in my word: ta t You have 5 guesses left Available letters: bcdefghiiklnopguwwzv Please guess a letter: c Good guess: tact Congratulations, you won! Loading word lise from file... 55900 0rd loaded . elcame to the game Hangman! I am thinking of a word that is 4 letters lang You have 8 guesses left Available letter : abcde fghk1mnopg-'tumrx v Please guess a 1 Oops! That letter is not in my word letter a You have 7 guesses left Ava ailable Lete: bsdefghij Please guess a letterb Oops! That letter is not in my word knopars turavE You have guesses left Available Letters: cdefhiiklmoporsturwxyE Please guess a letter: c Oops! That letter is not in my word You have 5 guesses left. Available letter : de fgh1k1mnopgr tumrxw Please guess a letter: a Oops! That letter is not in my word You hae 4 guesses left Available Ietters: efghi-kmn Please guess a letter: e Good guess: e You hae 4 guesses left Ava klmopgrstauwRVE ailable Lette: fghii Please guess a letter Oops! Thae Letter is not in d: You hae 3 guesses left Please guess a letter Oops! That letter is not in my ard : e You hae2 guesses left Available Lettermngpgrtuny Please guess a letter: h Oops! Thae Letter is not in d: You have 1 guesses le Available Ietters: iimnopgrsturwv Please guess a letter:i Oops! That letter is not in y word: e Boszy, you ran ous of uesses. The word va e