"SCJP 1.6版考題 194" 修訂間的差異
出自 陳富國維基館
(新頁面: Given: enum Example{ONE, TWO, THREE} Which statement is true? A. The expressions (ONE == ONE) and ONE.equals(ONE) are both guaranteed to be true. B. The expression (ONE < TWO)...) |
(無差異)
|
於 2013年3月30日 (六) 00:20 的最新修訂
Given:
enum Example{ONE, TWO, THREE}
Which statement is true?
A. The expressions (ONE == ONE) and ONE.equals(ONE) are both guaranteed to be true.
B. The expression (ONE < TWO) is guaranteed to be true and ONE.compareTo(TWO) is guaranteed to be less than one.
C. The Example values cannot be used in a raw javautil.HashMap; instead,
the programmer must use a java.util.EnumMap.
D. The Example values can be used in a java.util.SortedSet,
but the set will NOT be sorted because enumerated types do NOT implement java.lang.Comparable.
解答
Ans: A
解說: The expressions (ONE == ONE) and ONE.equals(ONE) are both guaranteed to be true.
| ||||||||||||||||||||
