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Why is the return value always 0 from getSelectedIndex from a DefaultListModel?

I have an AutoCompleteTextField working with a DefaultListModel.

        options = new DefaultListModel<>();
    labelACField = new AutoCompleteTextField(options){
        @Override
        protected boolean filter(String text) {

        }
    };

The return value from options.getSelectedIndex() always returns 0 from actionPerformed, even users choose other items in the AutoCompleteTextField.

labelACField.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent evt) {
            if (filteredIdObjs!=null){
                selectedIdx = options.getSelectedIndex();

For example, a user clicks "VV Vanguard Large-Cap ETF" or IVOV....or IVVD, or CVV.. the return value from options.getSelectedIndex() always returns 0. How do I get the item index that the user clicks? enter image description here

Solution

  • That's an interface designed for a List. AutoCompleteTextField uses the ListModel interface for ease of use. But it doesn't use selection since it's inherently a text field.

    The output is the text within the text field. Not list selection since a user can type in any arbitrary value without selecting a value from the list.