如何从2D按钮阵列访问一个按钮？ Java JSwing

Question

I am trying to create a grid of buttons. This is my code to create the grid (which works), but if I want to access a single button later on how would I go about doing that?

    for(int i = 1; i<= row; i++){
        for( int p=1; p<= col; p++){
           boardPanel.add(new JButton());   
        }
    }

Many Thanks

A Clements;

Answer 1

From your question title I'm assuming that you want to be able to access these buttons from a 2d array, but in your code the button is not in an array. If you did something like the following:

JButton[][] buttons = new JButton[row][col];
for(int i = 1; i<= row; i++){
    for( int p=1; p<= col; p++){
       buttons[i][p] = new JButton();
       boardPanel.add(buttons[i][p]);   
    }
}

Then you are maintaining a 2d array that contains references to the buttons in your JPanel. So now you can access the buttons from the array like this:

buttons[i][j];