问如何获取某个区域/国家/地区的每周第一天

EN

final Locale[] locales = new Locale[]{
        new Locale("en_GB"),
        new Locale("ru_RU"),
        new Locale("en_US"),                
        new Locale("es_ES"),
        new Locale("fr_FR"),        
        new Locale("iw_IL"),
        new Locale("he_IL")
};

for (final Locale locale : locales) {
    final Calendar cal = Calendar.getInstance(locale);
    final int firstDayOfWeek = cal.getFirstDayOfWeek();
    System.out.println(firstDayOfWeek);
}