SCJP 1.6版考題 164

Given:
1. d is a valid, non-null Date object
2. df is a valid, non-null DateFormat object set to the current locale

What outputs the current locale's country name and the appropriate version of d's date?
 A. Locale loc = Locale.getLocale();
    System.out.println(loc.getDisplayCountry()
    + " " + df.format(d));
 B. Locale loc = Locale.getDefault();
    System.out.println(loc.getDisplayCountry()
    + " " + df.format(d));
 C. Locale loc = Locale.getLocale();
    System.out.println(loc.getDisplayCountry()
    + " " + df.setDateFormat(d));
 D. Locale loc = Locale.getDefault();
    System.out.println(loc.getDisplayCountry()
    + " " + df.setDateFormat(d));

解答

---

Ans: E

解說:

Locale是本地化(/國際化)程式撰寫工具方法，locale 是指一個有共同語言和習慣的地理或政治區域。
在 Java 編程語言中，locale 由 Locale 對像來代表。對 locale 敏感的操作（例如排序原則和日期格式化）將根據 Locale 而變化。
 請參考：
   http://my.freebsd.org.hk/html/jdk1.2/guide/internat/intl.doc.html
   http://my.freebsd.org.hk/html/jdk1.2/guide/internat/index.html