Moving stuff from one JList to an other

Question

Hi,
I'm trying to develop a JPanel with two JLists and two arrow JButtons to be able to move (!) stuff from the left JList to the Right and backwards. Both JLists have a ListCellRenderer that extend JLabel.
Managed to do a 'copy' of selected values to the other JList,
eg.
public void addKeyWords(java.awt.event.ActionEvent actionEvent,javax.swing.JList allKeyWords,javax.swing.JList chosenKeyWords) {
java.util.List chosenValues = java.util.Arrays.asList(chosenKeyWords.getSelectedValues());
java.util.List selectedValues = java.util.Arrays.asList(allKeyWords.getSelectedValues());
java.util.Set set = new java.util.HashSet();
set.addAll(selectedValues);
javax.swing.JList l = new javax.swing.JList(set.toArray());
getChosenKeyWordsList().setModel(l.getModel());
return;
but can't figure out how to get stuff to disappear in the first JList when it is moved to the other JList nore how to enable the user to 'add' elements one at a time.
Enyone?

Answer 1

hi.
what i do when i want to remove from the right side list:
//get an array of indexes that needs to be removed.
elements[] removedItems = getStrings(rightListData, selected);
//copy all elements that do NOT need to be removed
rightListData = utils.copyArrayWithoutIndex(rightData, selected);
rightList.setListData(rightListData);
same goes for left side.
basically, i remove all selected elements from the array of rows, and re-set the list data model.
HTH.