Why does JTable always trigger ListSelectionListener twice?

Question

Is it normal that any changes to the selected row of the JTable will trigger the added ListSelectionListener twice?

Is it possible that the ListSelectionListener can be triggered only once?

Answer 1

Look at the event that is passed to your listener, specifically

ListSelectionEvent.getValueIsAdjusting() 

perform whatever ops you want to do when this returns false.