How to get the indexes of the clicked JButton?

Question

I have a matrix of JButton[][]. I try to add ActionListener to the buttons which stores the index of the button.

I need to make a game.

The first click shows from which button should I step and the second shows where to step.

Answer 1

What you need can be achieved in several ways, using HashMaps, 2D Arrays, etc etc... here is my suggestion:

Inheritance: you need now a Button with 2 properties that are not defined by default (col and row)

class MatrixButton extends JButton {
    private static final long serialVersionUID = -8557137756382038055L;
    private final int row;
    private final int col;

    public MatrixButton(String t, int col, int row) {
    super(t);
    this.row = row;
    this.col = col;
    }

    public int getRow() {
    return row;
    }

    public int getCol() {
    return col;
    }
}

---

you have for sure a Panel where you can add JButtons, now add instead a MatrixButton

 panel.add(MatrixButton);

then add the actionlistener

button1.addActionListener(this);

and when you click you get the position coordinates by doing

   @Override
    public void actionPerformed(ActionEvent ae) {
    if (ae.getSource() == this.button1) {
        System.out
            .println(((MatrixButton) ae.getSource()).getRow() + "," + ((MatrixButton) ae.getSource()).getCol());
    } else if (ae.getSource() == this.button2) {
        // TODO
    } else if (ae.getSource() == this.button3) {
        // TODO
    }
    }