Re: imcompatible type when converting a List to array

From:

Thufir <hawat.thufir@gmail.com>

Newsgroups:

comp.lang.java.help

Date:

Fri, 20 Jun 2008 20:14:11 -0700 (PDT)

Message-ID:

<1a8e2307-b149-4de9-8350-e01232a5b4c9@h1g2000prh.googlegroups.com>

On Jun 20, 6:50 am, Lew <con...@lewscanon.com.invalid> wrote:
[...]

Now FileUtils need know nothing about how its results will be displayed.
Otherwise, what if you decide you don't like Swing any more, or want to p=

ort

to JSF or GWT? You would have to rewrite FileUtils. Yecch.

Have FileUtils deal only with List<Guest>. ListModel is the canonical
differential gear between model and view.

ListModel listModel = new GuestListModel( FileUtil.getGuests() );

Now we have clean separation and decoupled communication between model an=

d view.

pardon, but I'm stuck in the details regarding GUI. How would this be
updated?

guestList.setModel(FileUtil.getGuests() /* kludge which returns a
DefaultListModel */); //guestList is a JList

If I'm going to do that, then I would also want to make ListModel a
singleton along the lines of:

public class GuestListModel extends DefaultListModel
{

   private static final GuestListModel INSTANCE = new DataList();

   private List<Guest> guests; // = FileUtil.getGuests();

   private GuestListModel()
   {
      guests = FileUtil.getGuests();
   }

   public static GuestListModel getInstance()
   {return INSTANCE;}
}

thanks,

Thufir