How to calculate total checkboxes selected ? If (totalselected)>10 disable rest

So Im trying to check if the total number of checkboxes selected is == 10. If so I'm wanting to disable the rest of the checkboxes that aren't selected! Meaning that a user can only select 10 checkboxes.

I was thinking a for loop which loops through an array and then checks if a checkbox is selected and then adds 1 to the counter. If the counter reaches 10 I thought It may be easy to disable the rest of the checkboxes but obviously not!

          List<Checkbox> chkSongs = new ArrayList<Checkbox>();
            String labels[] = {"songA", "songB", "songC", "songD", "songE",
                "songF", "songG", "songH", "songI", "songJ", "songK", "songL", "songM",
            "songN", "songO", "songP", "songQ", "songR", "songS", "songT"}
            for (int i = 0; i < labels.length; i++) {
                Checkbox checkbox = new Checkbox(labels[i]);
                chkSongs.add(checkbox); 
                formPanel.add(checkbox);
            }