Which of the following is a legal Java identifier?
a) ib) class
c) ilikeclass!
d) idon’tlikeclass
e) i-like-class
Answer: a.
Explanation: Java identifiers cannot have the characters “!”, “‘” or “-” in them making answer c, d and e wrong. The word “class” is a reserved word in Java and cannot be used as an identifier. The identifier “i” is perfectly legal although it is not necessarily a good identifier since it is not descriptive of its use.
Java
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