Amazing

package match.game;
import java.util.Scanner;
import java.util.Random;
import java.util.ArrayList;

public class MatchGame
{
    static char[] hiddenBoard = new char[]{'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'};
    static char[] board = new char[]{' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '};
    static char[] matches = new char[]{'A','A','B','B','C','C','D','D','E','E','F','F','G','G','H','H'};

    public static void generateBoard()
    {
        Random random = new Random();
        int[] spotsTaken = new int[16];
        for(int c = 0; c < 16; c++)
        {
            int spot = random.nextInt(16);
            while(board[spot] != ' ')
            {
                spot = random.nextInt(16);
            }
            board[spot] = matches[c];
        }
    }

    public static void showBoard(int spot1, int spot2)
    {
        for(int c = 0; c < 16; c++)
        {
            if(c == spot1 || c == spot2) System.out.print(board[c] + "  ");
            else System.out.print(hiddenBoard[c] + "  ");
            if((c+1)%4==0)System.out.println();
        }
    }

    public static void showRealBoard()
    {
        for(int c = 0; c < 4; c++)System.out.print(board[c] + "  ");
        System.out.println();
        for(int c = 4; c < 8; c++)System.out.print(board[c] + "  ");
        System.out.println();
        for(int c = 8; c < 12; c++)System.out.print(board[c] + "  ");
        System.out.println();
        for(int c = 12; c < 16; c++)System.out.print(board[c] + "  ");
        System.out.println();
    }

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

        boolean win = false;
        int lives = 10;
        ArrayList<Integer> guessedSpots = new ArrayList();
        generateBoard();

        System.out.println("Welcome to match game!");
        System.out.println("The goal of this game is to find all 8 matches (A - H)");
        System.out.println("Pick 2 spots on the board (1 - 16) and try to find the hidden matches.");
        System.out.println("Careful! You only have 10 lives.");

        while(lives > 0)
        {
            showBoard(-1,-1);
            System.out.println("Lives left: " + lives);
            System.out.println("Pick spot 1: ");
            int spot1 = input.nextInt();
            while(spot1 > 16 || spot1 < 1)
            {
                System.out.println("That spot does not exist! Guess another.");
                spot1 = input.nextInt();
            }
            while(guessedSpots.contains(spot1))
            {
                System.out.println("You already guessed that spot! Guess another.");
                spot1 = input.nextInt();
            }
            spot1--;
            showBoard(spot1,-1);
            System.out.println("Pick spot 2: ");
            int spot2 = input.nextInt();
            while(spot2 > 16 || spot2 < 1)
            {
                System.out.println("That spot does not exist! Guess another.");
                spot2 = input.nextInt();
            }
            while(guessedSpots.contains(spot2))
            {
                System.out.println("You already guessed that spot! Guess another.");
                spot2 = input.nextInt();
            }
            spot2--;
            if(board[spot1] == board[spot2])
            {
                showBoard(spot1,spot2);
                System.out.println("Match found!");
                hiddenBoard[spot1] = ' ';
                hiddenBoard[spot2] = ' ';
                guessedSpots.add(spot1+1);
                guessedSpots.add(spot2+1);
            }
            else
            {
                showBoard(spot1,spot2);
                System.out.println("Match not found!");
                lives--;
            }
            if(guessedSpots.size() == 16)win=true;
            System.out.println(guessedSpots.size());
            if(win == true)break;
        }
        if(win == true)
        {
            System.out.println("Congrats! You found all the matches. You win!");
        }

        else
        {
            System.out.println("You ran out of lives! Better luck next time!");
        }
    }
}