List cell editor can let the user select the items displayed in the dropdown list, and can also update the value entered directly from the user. At this point, in order for the user to input more comfortable, ListCellEditor.partialMatch and ListCellEditor.narrowSearch options can be used.
partialMatch is an option enable to search Korean initial consonant in the list of displaying Korean items. For example, if you would like to select '알바니아' in the list, you can type 'ㅇㅂㄴㅇ' instead of '알바니아' to complete searching. In the example below, partialMatch option has been set as true in 'Partial True' column and false in 'Partial False' column.
narrowSearch option is a function to display only the items including the input value in the dropdown list when the user enters in ListCellEditor. For example, if the user types '알' to complete '알바니아', only '알제리' and '알바니아' which start with this corresponding word will be displayed in the list. In the example below, narrowSearch option has been set as true in 'Narrow True' column and false in 'Narrow False' column.