1. public static Calendar getInstance()
    2. {
    3.     return createCalendar(TimeZone.getDefault(), Locale.getDefault(Locale.Category.FORMAT));
    4. }
    6. private static Calendar createCalendar(TimeZone zone,
    7.                                            Locale aLocale)
    8.     {
    10.         //。。。。。。
    12.         Calendar cal = null;
    13.         if (aLocale.hasExtensions()) {
    14.             String caltype = aLocale.getUnicodeLocaleType("ca");
    15.             if (caltype != null) {
    16.                 switch (caltype) {
    17.                 case "buddhist":
    18.                 cal = new BuddhistCalendar(zone, aLocale);
    19.                     break;
    20.                 case "japanese":
    21.                     cal = new JapaneseImperialCalendar(zone, aLocale);
    22.                     break;
    23.                 case "gregory":
    24.                     cal = new GregorianCalendar(zone, aLocale);
    25.                     break;
    26.                 }
    27.             }
    28.         }
    29.         //。。。。。。
    30.         return cal;
    31.     }