Re: Generics ?

In article<jcem2m$gbm$1@dont-email.me>,
  Knute Johnson<nospam@knutejohnson.com> wrote:


I defined a generic subclass of JList:

   class KList<E> extends JList<E> {

       public KList(ListModel<E> model) {
           this.setModel(model);
       }
   }

Then I created a ListModel<String>:

   DefaultListModel<String> dlm = new DefaultListModel<>();
   dlm.add(...);

Then I used it to create a new KList:

   KList<String> list = new KList<>(dlm);

Here's my sscce:

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.GregorianCalendar;
import javax.swing.*;

/** @see http://stackoverflow.com/a/5372169/230513 */
public class JakesList {

     private static final DateFormat df =
         new SimpleDateFormat("dd-MMM-yyyy");

     private static class KList<E> extends JList<E> {

         public KList(ListModel<E> model) {
             this.setModel(model);
         }
     }

     private static void createAndShowGUI() {
         DefaultListModel<String> dlm = new DefaultListModel<>();
         for (int i = 0; i< 10; i++) {
             GregorianCalendar knownDate = new GregorianCalendar();
             knownDate.add(Calendar.DAY_OF_MONTH, 3 * i);
             dlm.add(i, df.format(knownDate.getTime()));
         }
         KList<String> list = new KList<>(dlm);
         JOptionPane.showMessageDialog(null, list);
     }

     public static void main(String args[]) throws Exception {
         SwingUtilities.invokeLater(new Runnable() {

             @Override
             public void run() {
                 createAndShowGUI();
             }
         });
     }
}