Hi all.

Problem:

I am using JComboBox, and tried using setSelectionIndex(-1) in my code (this code is placed in caretInvoke())

suggestionComboBox.removeAllItems();
    for (int i = 0; i < suggestions.length; i++) {
        suggestionComboBox.addItem(suggestions[i]);
    }
    suggestionComboBox.setSelectedIndex(-1);
    suggestionComboBox.setEnabled(true);

This is the initial setting when it was added to a pane:

    suggestionComboBox = new JComboBox();
    suggestionComboBox.setEditable(false);
    suggestionComboBox.setPreferredSize(new Dimension(25, 25));
    suggestionComboBox.addActionListener(new SuggestionComboBoxListener());

When the caretInvoke triggers the ComboBox initialisation, even before the user selects an element, the actionPerformed is already triggered (I tried a JOptionPane here): First popup (notice that "flow byte_jump" is selected):

Second popup (I think the setSelectionIndex is executed)

Then in the end:

The problem is: My program autoinserts the selected text when the user selects an element from the ComboBox. So without the user selecting anything, it is automatically inserted already.

How can I overcome the problem in this situation? Thanks.