Updating combobox model - item listener no longer fires

Question

I have a combo box and I update its model with a new DefaultComboBoxModel by calling setModel. However when I first created the combo box, I registered an ItemListener with it by calling addItemListener. The problem is after I update the model, the ItemListener no longer fires. Do I need to call addItemListener with a new ItemListener on my combo box after each time I update the model?

Answer 1

Yes. You can use either of these approaches:

• Use getListDataListeners() to get the listeners and transfer them to the new model.

• Use removeAllElements() and recycle the existing model.