Refresh JList in a JFrame

Question

I\'ve got a JList which displays information from a vector. The user can then add and remove information from this vector. Is it possible to refresh the JList inside my JFra

Answer 1

You should not be updating the Vector. Changes should be made directly to the ListModel then the table will repaint itself automatically.

If you decide to recreate the ListModel because of the changes to the Vector, then you update the list by doing:

list.setModel( theNewModel );

Edit: Forget the Vector and load the data directly into the DefaultListModel:

DefaultListModel model = new DefaultListModel();
model.addElement( "one" );
model.addElement( "two" );
JList list = new JList( model );

Now whenever you need to change the data you update the model directly using the addElement(), removeElement() or set() methods. The list will automatically be repainted.

Answer 2

Call updateUI on the Jlist after modifying your Vector.

Answer 3

I think I found the solution for the Jlist's graphic 'refresh'. Try calling this method after each add or remove element of the model that is held by the Jlist.

Jlist_name.ensureIndexIsVisible(model_name.getSize());

Answer 4

you can use list.setListData(vector) each time the vector changes