how to remove an action listener?

Question

so im making a chess game but only with the knight.

this is the method for moving the knight

public void caballo(final int row, final int column) {

            


        

Answer 1

Like nachokk said, you should use: component.removeActionListener(theActionListenerYouWantToRemove)

Here is how you can use it in your e method:

public ActionListener e(final int row, final int column,
        final JButton current) {
    return new ActionListener() {
        public void actionPerformed(ActionEvent e) {

            current.setIcon(null);
            if (tienebotton(row + 2, column + 1)) {
                if (e.getSource() == mesa[row + 2][column + 1]) {
                    caballo(row + 2, column + 1);
                }
            }
            if (tienebotton(row + 2, column - 1)) {
                if (e.getSource() == mesa[row + 2][column - 1]) {
                    caballo(row + 2, column - 1);
                }
            }
            if (tienebotton(row - 2, column - 1)) {
                if (e.getSource() == mesa[row - 2][column - 1]) {
                    caballo(row - 2, column - 1);
                }
            }
            if (tienebotton(row - 2, column + 1)) {
                if (e.getSource() == mesa[row - 2][column + 1]) {
                    caballo(row - 2, column + 1);
                }
            }

            if (tienebotton(row + 1, column + 2)) {
                if (e.getSource() == mesa[row + 1][column + 2]) {
                    caballo(row + 1, column + 2);
                }
            }
            if (tienebotton(row - 1, column + 2)) {
                if (e.getSource() == mesa[row - 1][column + 2]) {
                    caballo(row - 1, column + 2);
                }
            }
            if (tienebotton(row + 1, column - 2)) {
                if (e.getSource() == mesa[row + 1][column - 2]) {
                    caballo(row + 1, column - 2);
                }
            }
            if (tienebotton(row - 1, column - 2)) {
                if (e.getSource() == mesa[row - 1][column - 2]) {
                    caballo(row - 1, column - 2);
                }
            }
            ((AbstractButton) e.getSource()).setEnabled(false);
            ((AbstractButton) e.getSource()).removeActionListener(this);
        }
    };
}

I see that you are new to Java, you'll notice that I have slightly modified your e method to only call current.setIcon(null); and ((AbstractButton) e.getSource()).setEnabled(false); I have also made sure that the remove action listener is only called once aswell, you should look to avoid writing duplicate code as much as possible.