Create a new version of paste:

/*
 * File: Hangman.java
 * ------------------
 * This program will eventually play the Hangman game from
 * Assignment #4.
 */

import acm.graphics.*;
import acm.program.*;
import acm.util.*;

import java.awt.*;

public class Hangman extends ConsoleProgram {

	private RandomGenerator rgen = RandomGenerator.getInstance();
	
	private String orig;
	private String hidden;
	private String userInput;
	private String lowerInput;
	// private String missedLetters = "";  // this is not needed
	
	private char lastLetter;
	private int guess = 8;
	
	//private boolean guessed = false;    //this is not needed
	private boolean GameWon = false;     // added this to stop the program before 8 tries passed if all letters were guessed

	public class getWord extends HangmanLexicon {
    	int rand = rgen.nextInt(getWordCount());
    	String str = getWord(rand);
    }

	getWord w = new getWord();
	private String getAWord() {
    	return(w.str);
    }

    public void run() {
    	console();
//    	graphics();
//    	readLexicon();
	}
    
    private void console() {
    	orig = getAWord();
   		// write dashes in HIDDEN only once. Used then during the game to control win/loss
        hidden = orig.replaceAll(".","-");
    	interactWithUser();
    }

    private void interactWithUser() {
    	println("Welcome to Hangman!");
    	gameProcess();
    	gameEnd();    // changed to finish game regardless of current status. gameEnd will determine if won or lost.
    }
    
    private void gameProcess() {
    	while (guess != 0 && !GameWon) {   // added "or if GameWon = true" to exit the loop if won before 8 tries
        	println("The word now looks like this: " + hidden);
        	checkUserInput();
        	println("You have " + guess + " guesses left.");
    	}
    }

    private void checkUserInput() {
    	userInput = readLine("Your guess: ");
    	lastLetter = userInput.charAt(0);
		lowerInput = orig.toLowerCase();
		if (hidden.contains(userInput) || hidden.toLowerCase().contains(userInput)) {
		// user entered already guessed letter. Need to warn him and exit checkUserInput
			println("You have already guessed this letter, are you being smart?");
			return;
		}

		if (orig.contains(userInput) || lowerInput.contains(userInput)) {
			println("** DEBUG: input letter matches letters in the word.");
			updateHidden();
			checkWin();
    	} else {
			println("** DEBUG: input letter DOES NOT MATCH letters in the word.");
    		guess--;    // placed instead of guessed = false;
    	}
		// this is not needed
		//if (!guessed) {
		//	guess--;
		//}
    }

	private void updateHidden() {
		for (int i=0; i< orig.lenth(); i++) {
			if (Character.toLowerCase(orig.charAt(i)) == Character.toLowerCase(lastLetter)) {
				println("** DEBUG: Trying to replace matched symbol at index: " + Integer.toString(i));
				char c = orig.charAt(i);
				hidden = replaceChar(hidden, c ,  i);
			}
		}
	}

	private String replaceChar(String str, char ch, int index) {
    	return str.substring(0, index) + ch + str.substring(index+1);
	}

	private void checkWin() {
		if (!hidden.contains("-")) {
			GameWon =  true;
		}
	}

    private void gameEnd() {    // changed from gameLost to gameEnd
    	if (guess == 0) {
    		println("You're completely hung.");
    		println("The word was: " + getAWord());
    		println("You lose.");
    	} 
		if (GameWon) {
    		println("Congratulations, you WON!!");
			println("The word was: " + getAWord());			
		}
    }

}