Multiple Choice Question

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Submitted by c-admin on Sat, 05/25/2019 - 21:49

QID:

Type:

Multiple Choice Question

Category:

Java Programmer I

Tags:

Java Basic

Question:

Which of the following are not legal Java identifiers?

Select 1 option

A. goto
B. unsigned
C. String
D. _xyz
E. $_abc
F. iLikeVeryVeryVeryVeryVeryLongIdentifiersThatDontMakeAnySenseAtAll (65 characters)

Answer and Explanation (Click to expand)

Answer:

Explanation:

Even though it is not used anywhere in Java code, it has been kept as a reserved word to prevent its usage in any form.

A valid java identifier is composed of a sequence of Java letters and digits, the first of which must be a letter. It cannot be the same as any java Keywords or literals (i.e. true, false or null). Java letters include uppercase and lowercase ASCII Latin letters and _ , $. (According to JLS.) . In fact, class names can serve as a valid identifier as in 'String' in one of the options above.

Q&A Set:

Set 1

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