public void promptUser(){
        Scanner scan = new Scanner(System.in);
        System.out.print("Pick a coordinate [row col] or press [q] to quit.");
        int row = 0;
        int row = 0;
        String line = scan.nextLine().trim();
        String[] contents = line.split(" ");
        if (contents[0] == "q"){
            isRunning = false;
            System.exit(0);
        }// if quit
        if (contents.length < 1 || contents.length > 2){
            System.out.print("Invalid Response. Try again.");
            promptUser();
        }// if wrong amount of input
        else {
            row = Integer.parseInt(contents[0]);
            col = Integer.parseInt(contents[1]);
        }// parse ints else
        if (inBounds(row, col) == true){
            if(!(board[row][col] == 'c'){
                click(row, col);
            }// has been clicked
        }// in bounds?
        else{
            System.out.print("Invalid response. Try again.");
            promptUser();
        }// else error
    }// promptUser method

Exception in thread "main" java.lang.NumberFormatException: For input string: "q"
     at    java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Integer.parseInt(Integer.java:481)
at java.lang.Integer.parseInt(Integer.java:514)
at Minesweeper.promptUser(Minesweeper.java:197)
at Driver.main(Driver.java:12)

public void initialize(){
    isRunning = true;
    board = new char[this.rows][this.cols];
    for (int i = 0; i < board.length; i++){
        for(int j = 0; j < board[i].length; j++){
            board[i][j] = 'e';

        }
    }
    mineBoard = new boolean[this.rows][this.cols];

    for (int i = 0; i < mineBoard.length; i++){
        for (int j = 0; j < mineBoard[i].length; j++){
            mineBoard[i][j] = false;
        }
    }
    Random bob = new Random();
    Random sally = new Random();
    for (int i = mines; i > 0; i--){
        int mineX = bob.nextInt(10);
        int mineY = sally.nextInt(10);
        if (mineBoard[mineX][mineY] == false){
            mineBoard[mineX][mineY] = true;
        }
        else{
            i++;
        }
    }

}

private boolean inBounds(int row, int col){
        if (row < 0 || row > board.length){
            return false;
        }
        if (col < 0 || col > board[0].length){
            return false;
        }else
            return true;
        }

contents[0].equals("q")