actionPerformed confusion on button events

I am trying to make a game in java, when a button is pressed I want it to change icon to indicate that button has been selected, then when it is clicked again I want to change it to its original icon to show it has been deselected.

public void actionPerformed(ActionEvent e)
{
    if(e.getSource() == b[7][4] && selected == false)
    {
        b[7][4].setIcon(selected);
        selected = true;
    }

    if(e.getSource() == b[7][4] && selected == true)
    {
        b[7][4].setIcon(king);
        selected = false;           
    }
}

This code currently does as I wish but it runs both at the same time thus changes the icon and then immediately changes it back to the original icon. How can I make it so one click changes it to selected and then the second click changes it back to a king icon?