Returning a selection from a list or table

Question

I'm looking for a nice way to present the selcted value of a JList or a JTable to the rest of the program. So far the only thing I know to do is make the selection a static variable of the class implementing the ListSelectionListener interface. For instance, in the code below, I would make the variable rowNum a static variable, accessible from outside. But OO says to make it a method like public int getSelection(){return rowNum}i've had difficulty extracting the selection and making it available where it is really needed, in the business logic of the program. Any comments would be appreciated.class TablePanel extends JPanel
  ConnectionHandler ch;
  static TheTableModel tm;
  ListSelectionHandler selector;
  TablePanel(ConnectionHandler ch)
    this.ch = ch;
    tm = new TheTableModel();
    JTable jt = new JTable(tm);
    //selection mechanics
    jt.setPreferredScrollableViewportSize(new Dimension(900,200));
    ListSelectionModel rowSM = jt.getSelectionModel();
    selector = new ListSelectionHandler();
    rowSM.addListSelectionListener(selector);
    jt.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    //set column widths
    TableColumn column = null;
    for (int i = 0; i<9;i++)
      column = jt.getColumnModel().getColumn(i);
      if(i==0) column.setPreferredWidth(40);
      column.setPreferredWidth(100);
    //display
    JScrollPane jsp = new JScrollPane(jt);
    add(jsp);
class ListSelectionHandler implements ListSelectionListener
  public void valueChanged(ListSelectionEvent e)
    ListSelectionModel lsm = (ListSelectionModel)e.getSource();
    if(lsm.isSelectionEmpty()) return;
    int rowNum = lsm.getMinSelectionIndex();
    if(!e.getValueIsAdjusting())
      System.out.println(rowNum +" =rowNum");
}

Answer 1

You could make it a method like
public int getSelection() {
   return table.getSelectedRow();
}That would work fine provided 'table' is kept as an instance variable. As far as I can see, there's no need for a static variable here. If you wanted to return different information, you could do it the same way (eg, returning the selected value, instead of the row, etc.)