从DefaultListModel绑定的Jlist是否可以仅显示某些元素？

Question

Is it possible to bind or show only some of the ListModel or List When i Bind it to a Jlist item ?

In my Example I have a list model made from an array of a class(pizza) which has multiple variable's I only want to show one, but they are all being displayed in a line.

  listModel = new DefaultListModel();
  listModel = ListHandler.populateListModel(listModel); 
  // This returns listModel binded from array of a class<Pizza>

  list = new JList(listModel);
  list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
  list.setSelectedIndex(0);
  JScrollPane listScrollPane = new JScrollPane(list);
  Apanel.add(listScrollPane, BorderLayout.CENTER);

This code when then display all the items in Pizza per line, Is it possible to just show 1 varible from pizza ? Cheese for example in the listbox alone... ?

Answer 1

The default cell renderer is calling toString() on the value objects in your model. You can do either of these:

• Override/change the value returned by toString() to be the text you want to show
• Change the cell renderer to format the value object differently from the default

I'd prefer the second, since you might want toString() to have a specific other value for some other reason.

See http://docs.oracle.com/javase/7/docs/api/javax/swing/ListCellRenderer.html