Scanner netbean = new Scanner(System.in);

        int board[][] = new int[8][8];
        int player=1;
        int x=0;

        Functions.draw(board);

        do {

            //inputs
            player=1;

            do {
                System.out.println("Player 1 enter a letter: ");
                x=(netbean.next().toUpperCase().charAt(0))-65;

            } while (Functions.possible(board, x) != true);

            Functions.drop(board, x, player);
            Functions.draw(board);

            //game end statements
            if (Functions.checkdone(board, x)) {
                System.out.println("Tie");
                break;
            }
            if (Functions.checkwinZ(board, player)) {
                System.out.println("Player 1 wins");
                break;
            }
            if (Functions.checkwinS(board, player)) {
                System.out.println("Player 1 wins");
                break;
            }
            if (Functions.checkwinV(board, player)) {
                System.out.println("Player 1 wins");
                break;
            }
            if (Functions.checkwinUV(board, player)) {
                System.out.println("Player 1 wins");
                break;
            }

            player=2;

            //player2 inputs
            do {
                System.out.println("Player 2 enter a letter: ");
                x=(netbean.next().toUpperCase().charAt(0))-65;

            } while (Functions.possible(board, x) != true);

            Functions.drop(board, x, player);
            Functions.draw(board);

            //game end statements
            if (Functions.checkdone(board, x)) {
                System.out.println("Tie");
                break;
            }
            if (Functions.checkwinZ(board, player)) {
                System.out.println("Player 2 wins");
                break;
            }
            if (Functions.checkwinS(board, player)) {
                System.out.println("Player 2 wins");
                break;
            }
            if (Functions.checkwinV(board, player)) {
                System.out.println("Player 2 wins");
                break;
            }
            if (Functions.checkwinUV(board, player)) {
                System.out.println("Player 2 wins");
                break;
            }

        } while (1==1);






    public static String letters = "ABCDEFGH";
    public static int k = 0;
    public static boolean win=false;

    public static void drop(int board[][], int x, int player) {

        for (int i = 7; i > -1; i--) {
            if (board[x][i] == 0) {
                if (player==1) {
                    board[x][i] = 1;
                    k = i;
                }
                if (player==2) {
                    board[x][i] = 2;
                }
                break;
            }
        }

    }

    public static boolean possible(int board[][], int x) {
        boolean node = false;
        for (int i = 7; i > -1; i--) {
            if (board[x][i] == 0) {
                node = true;
                break;
            }
        }
        return node;
    }

    public static void draw(int board[][]) {
        System.out.println("");
        for (int i = 0; i < 8; i++) {
            for (int j = 0; j < 8; j++) {
                System.out.print(board[j][i] + " ");
            }
            System.out.println("");
        }
        for (int i = 0; i <letters.length(); i++) {
            System.out.print(letters.substring(i,i+1) + " ");
        }
        System.out.println("\n");
    }

    public static boolean checkdone(int board[][], int x) {
        boolean end = true;

        for (int i = 0; i < 8; i++) {
            for (int j = 0; j < 8; j++) {
                if (board[j][i] == 0) {
                    end = false;
                }
            }
        }
        return end;
    }

    public static boolean checkwinZ(int board[][], int player){
        for (int i = 0; i <board.length-2; i++) {
            for (int j = 0; j <board[0].length-2; j++) {
                if (board[i][j]==player && board[i][j]==board[i+1][j] && board[i][j]==board[i+1][j+1] && board[i][j]==board[i+1][j+2] && board[i][j]==board[i+2][j+2]) {
                    win=true;
                }
            }
        }
        return win;
    }

    public static boolean checkwinS(int board[][], int player){
        for (int i = 0; i <board.length-2; i++) {
            for (int j = 2; j <8; j++) {
                if (board[i][j]==player && board[i][j]==board[i+1][j] && board[i][j]==board[i+1][j-1] && board[i][j]==board[i+1][j-2] && board[i][j]==board[i+2][j-2]) {
                    win=true;
                }
            }
        }
        return win;

    }

    public static boolean checkwinV(int board[][], int player){
        for (int i = 0; i <4; i++) {
            for (int j = 0; j <board[0].length-2; j++) {
                if (board[i][j]==player && board[i][j]==board[i+1][j+1] && board[i][j]==board[i+2][j+2] && board[i][j]==board[i+3][j+1] && board[i][j]==board[i+4][j]) {
                    win=true;
                }
            }
        }
        return win;
    }

    public static boolean checkwinUV(int board[][], int player){
        for (int i = 0; i <4; i++) {
            for (int j = 2; j<8; j++) {
                if (board[i][j]==player && board[i][j]==board[i+1][j-1] && board[i][j]==board[i+2][j-2] && board[i][j]==board[i+3][j-1] && board[i][j]==board[i+4][j]) {
                    win=true;
                }
            }
        }
        return win;
    }