JAVA miglayout way to set and get text to/from cell

I'm creating a Pac-man game in which I would like to use miglayout with a text file to set/get text out of cell. I have map (32x32) let's say. And I want to fill every cell with W (ok that is not a problem, I can create a function which every time is called creates new JLable and add it to the cell).

FUNCTION:

public void function(String rowColumn){
    JLabel lblH = new JLabel("W");
    contentPane.add(lblH, "cell " + rowColumn);
}

But then I can't read it.

Question: How do I read and write text in the cell?

EDIT: Or, is there any better layout which has cells and can set/get text from/to a cell?

The answer is this:

public static void start(){
    for(int a = 0; a <= 22; a++){
        for(int b = 0; b <= 37; b++){
            printToCell(String.valueOf(b), String.valueOf(a), "H");
        }
    }
}


public static void clearContentPane(){
    engine_design.Engine.contentPane.removeAll();
    engine_design.Engine.contentPane.setLayout(new MigLayout("", "", ""));
}


public static void printToCell(String column, String row, String letter){
    JLabel lblH = new JLabel(letter);
    lblH.setFont(new Font(lblH.getName(), Font.BOLD, 15));
    engine_design.Engine.contentPane.add(lblH, "cell " + column + " " + row);

}

And for the reading I will use list, how someones mentioned before.