font error in content after write csv file

[ttson24]

i have to file csv(i call them template). i have to entity:

@CsvColumn(
            position = 4,
            name = "TEST_PLAN_NAME",
            language = "ja",
            country = "JP")
    private String testPlanName;

when write csv file:

List<String[]> listHeader =
                    Csv.load(fileTemplate, EncodingType.SHIFT_JIS.getCode(), config, new StringArrayListHandler());

but i open this file csv as excel, font error below: 蜊倅ｽ薙ユ繧ｹ繝・it must is 単体テスト what is suit i do?