Jlist alphabetical ordering

Question

I have the following demo application that displays a list of values, but I need to be able to control the ordering of the items in the list. The easiest way to add this?

package demo; import javax.swing.DefaultListModel; import javax.swing.JFrame; import javax.swing.JList; import javax.swing.ListModel; public class JListOrder { public JListOrder() { JFrame frame = new JFrame("JListOrder"); DefaultListModel model = new DefaultListModel(); model.addElement("z"); model.addElement("Z"); model.addElement("a"); model.addElement("A"); model.addElement("C"); model.addElement("c"); model.addElement("b"); model.addElement("B"); JList list = new JList(model); frame.add(list); frame.setSize(200,200); frame.setVisible(true); } public static void main(String[] args) { new JListOrder(); } } 

Answer 1

The easiest way is to use SwingX, which supports JXList sorting / filtering in the same way as sorting / filtering the main table:

 JXList list = new JXList(model); list.setAutoCreateRowSorter(true); list.toggleSortOrder(); 

Answer 2

If you mean, you need to control the order of its elements at runtime while its elements are changing, then you probably need to implement your own SortedListModel for your JList. A good oracle article can be found here .

Answer 3

If you do not need the problem of sorting objects before adding them to the JList, you can write / use a ListModel implementation that will sort them for you already. See this implementation .

As I have said in almost all issues related to JLists / JTables, please see GlazedLists . It does almost everything you can imagine regarding sorting and filtering.

Answer 4

DefaultListModel displays elements in the order in which they are added. You can simply add items to the order and that they will be displayed.

Answer 5

You can use the Sorted combo box model . I know this is a "combo box", but it also implements the List interface.