Return the index of clicked button?

Question

I have got an array of 30 buttons []. I have a variable buttonClicked. When I press the button how can I get the index and store the index number in the buttonClicked?

Answer 1

1) putClientProperty

buttons[i][j].putClientProperty("column", i);
buttons[i][j].putClientProperty("row", j);
buttons[i][j].addActionListener(new MyActionListener());

and getClientProperty

public class MyActionListener implements ActionListener {

@Override
public void actionPerformed(ActionEvent e) {
    JButton btn = (JButton) e.getSource();
    System.out.println("clicked column " + btn.getClientProperty("column")
            + ", row " + btn.getClientProperty("row"));
}

2) ActionCommand