Multiple Choice Question

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Submitted by c-admin on Sat, 05/25/2019 - 23:08

QID:

Type:

Multiple Choice Question

Category:

Java Programmer I

Tags:

Java Basic

Question:

Which of the following is/are illegal Java identifier(s)?

Select 1 option

A. num
B. int123
C. 2Next
D. _interface
E. a$_123

Answer and Explanation (Click to expand)

Answer:

Explanation:

C - Cannot start with a digit.

A valid java identifier is composed of a sequence of Java letters and digits, the first of which must be a letter. (According to JLS.)

It is not clear from the objectives of whether this topic is included or not. Regardless, it is good to know how to declare a valid identifier.

Q&A Set:

Set 1

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