/**This is JAVA Assignment you do not need to change all the methods kindly chec

Question

/**This is JAVA Assignment you do not need to change all the methods kindly check the outputs and most importantly add your output when your sending me the solution.
* CS 152 Lab 5 - Hangman
*
* Implement the methods needed to play a game of hangman.
*
* Student name: YOUR NAME GOES HERE
*/
import java.util.Scanner;

public class Hangman {
  
/** We'll use asterisks for unknown letters. */
public static final char BLANK = '*';

/**
* Selects a random word from the dictionary.
* @param dictionary An array of words.
* @return Randomly chosen word from dictionary.
*/
public static String selectRandomWord(String[] dictionary) {
// REPLACE THE METHOD BODY
// I suggest you implement this method first, since
// the program will crash if it returns null.
return null;
}
  
/**
* Have all the letters in the guess been filled in?
* @param knownLetters Array of letters that player knows.
* @return True if knownLetters has no blanks (that is, no asterisks)
*/
public static boolean isComplete(char[] knownLetters) {
// REPLACE THE METHOD BODY
return true;
}

/**
* Checks to see if guessedLetter occurs at least once in word. If so,
* sets the corresponding elements of knownLetters to that letter and
* returns true. If not, leave knownLetters alone and returns false.
* @param guessedLetter Letter that player has guessed.
* @param word The word we are checking.
* @param knownLetters Array of letters that player knows.
* @return True if letter was found in word.
*/
public static boolean updateWithGuess(char guessedLetter,
String word,
char[] knownLetters) {
// REPLACE THE METHOD BODY
return false;
}

/**
* This method prints ASCII art of the hanged man.
* You don't need to change this method.
* @param guesses The number of guesses remaining.
*/
public static void drawAsciiMan(int guesses){

// top of gallows
System.out.println(" _______");

// head (or not)
if(guesses < 6) {
System.out.println(" | O");
} else {
System.out.println(" |");
}

// Body and arms
switch (guesses) {

case 6:
case 5:
// no body
System.out.println(" |");
break;

case 4:
// body, no arms
System.out.println(" | |");
break;

case 3:
// body and left arm
System.out.println(" | /|");
break;

default:
// body and both arms
System.out.println(" | /|\");
break;

}

// Legs
switch (guesses) {

case 1:
// left leg
System.out.println(" | /");
break;

case 0:
// both legs
System.out.println(" | / \");
break;

default:
// no legs
System.out.println(" |");
break;

}

// bottom of gallows
System.out.println("_|_" );
}

/**
* Plays a text-based game of hangman.
* You don't need to change this method.
*/
public static void main(String[] args) {
// Let's use some animals for our words in this game.
String[] words = {"aardvark", "alligator", "alpaca", "anteater",
"antelope", "ape", "armadillo", "baboon",
"badger", "bat", "bear", "beaver", "bison", "boar",
"buffalo", "bull", "bunny", "burro", "camel",
"canary", "capybara", "cat", "chameleon", "cheetah",
"chimpanzee", "chinchilla", "chipmunk", "colt",
"cougar", "cow", "coyote", "crocodile", "crow",
"deer", "dingo", "doe", "dog", "donkey", "dormouse",
"elephant", "elk", "ewe", "fawn", "ferret", "finch",
"fish", "fox", "frog", "gazelle", "giraffe", "gnu",
"goat", "gopher", "gorilla", "hamster", "hare",
"hedgehog", "hippopotamus", "hog", "horse", "hyena",
"ibex", "iguana", "impala", "jackal", "jaguar",
"kangaroo", "kid", "kitten", "koala", "lamb",
"lemur", "leopard", "lion", "lizard", "llama",
"lynx", "mare", "marmoset", "marten", "mink",
"mole", "mongoose", "monkey", "moose", "mouse",
"mule", "muskrat", "mustang", "newt", "ocelot",
"opossum", "orangutan", "oryx", "otter", "ox",
"panda", "panther", "parakeet", "parrot", "pig",
"platypus", "pony", "porcupine", "porpoise", "puma",
"puppy", "rabbit", "raccoon", "ram", "rat",
"reindeer", "reptile", "rhinoceros", "salamander",
"seal", "sheep", "shrew", "skunk", "sloth", "snake",
"squirrel", "stallion", "steer", "tapir", "tiger",
"toad", "turtle", "vicuna", "walrus", "warthog",
"weasel", "whale", "wildcat", "wolf", "wolverine",
"wombat", "woodchuck", "yak", "zebra"};
  

System.out.println("Welcome to Hangman! Try to guess my word.");

String word = selectRandomWord(words);
  
char[] known = new char[word.length()];
for(int i = 0; i < known.length; i++) {
known[i] = BLANK;
}

Scanner sc = new Scanner(System.in);
int guesses = 6;
while(guesses > 0 && !isComplete(known)) {
System.out.println(); // blank line between guesses
System.out.println("Guesses remaining: " + guesses);
drawAsciiMan(guesses);
System.out.println("Word: " + new String(known));

System.out.print("Guess a letter: ");
// grabbing the entire next token and then taking only 1st char
char letter = sc.next().trim().charAt(0);

boolean foundLetter = updateWithGuess(letter, word, known);
if(!foundLetter) {
System.out.println("Sorry, there is no " + letter);
guesses--;
}
}

drawAsciiMan(guesses);
System.out.println("Word: " + new String(known));
if(isComplete(known)) {
System.out.println("Hooray! You win!");
} else {
System.out.println("You lose. The word was: " + word);
}
}

}

Explanation / Answer

There is null pointer exception.Try to use "try catch block" in main to solve the problem

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