ListSelectionEvent fire 2 triggers asynchronously when clicking rows/columns

ListSelectionEvent fire 2 triggers asynchronously when clicking rows/columns

Should i change any thing with my code??

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;

public class JTableListSelectionListener {

public static void main(String[] a) {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

final JTable table;

String[] columnTitles = { "A", "B", "C", "D" };
Object[][] rowData = { { "11", "12", "13", "14" }, { "21", "22", "23", "24" },
    { "31", "32", "33", "34" }, { "41", "42", "44", "44" } };

table = new JTable(rowData, columnTitles);

table.setCellSelectionEnabled(true);
ListSelectionModel cellSelectionModel = table.getSelectionModel();
cellSelectionModel.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

cellSelectionModel.addListSelectionListener(new ListSelectionListener() {
  public void valueChanged(ListSelectionEvent e) {
    String selectedData = null;

    int[] selectedRow = table.getSelectedRows();
    int[] selectedColumns = table.getSelectedColumns();

    for (int i = 0; i < selectedRow.length; i++) {
      for (int j = 0; j < selectedColumns.length; j++) {
        selectedData = (String) table.getValueAt(selectedRow[i], selectedColumns[j]);
      }
    }
    System.out.println("Selected: " + selectedData);
  }

});

frame.add(new JScrollPane(table));

frame.setSize(300, 200);
frame.setVisible(true);
}

}

Output will be

Selected: 42

Selected: 42

Selected: 33

Selected: 33

But i want to trigger single event whenever user clicks particular row or column?

Use ListSelectionEvent.getValueIsAdjusting() to check it isn't (changing).

Returns whether or not this is one in a series of multiple events, where changes are still being made. See the documentation for ListSelectionModel.setValueIsAdjusting(boolean) for more details on how this is used.