JCombox setSelectedItem() causing loss of focus in JTable

Question

I was implementing a auto completion combobox in a JTable , everything seems to work fine, but when I fire model.setSelectedItem(item); to select the current Item in the combo-list, the combobox loses focus.

Can we override this function?

Answer 1

In your case you shouldn't use JCombobox#setSelectedItem. This method call will raise an ActionEvent which might cause the focus to go over to the next component. Try to use instead

JCombobox combo = ...
combo.getModel().setSelectedItem(...);

Update: I reviewed the implementation's code and it seems that using JComboboBox#setSelectedIndex is what you are looking for. This method is also used when you type a character and the list shows the next item starting with the typed character.