QUESTION 9

QUESTION 9 

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 java.util.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. 

Solution : A