Multiple choice technology programming languages

Choose the valid identifiers from those listed below.

  1. BigOlLongStringWithMeaninglessName
  2. $int

  3. bytes
  4. $1

  5. finalist
Reveal answer Fill a bubble to check yourself
A,B,C,D,E Correct answer
Explanation

In Java, valid identifiers can begin with a letter, an underscore (_), or a currency symbol like $. They can contain letters, digits, underscores, and currency symbols. Keywords cannot be used, but bytes and finalist are not keywords, making all options valid.

AI explanation

To answer this question, we need to understand what identifiers are in programming.

Identifiers are names used to identify variables, functions, classes, or other programming elements in a program. They are user-defined and should follow certain rules and conventions.

Let's go through each option to determine if it is a valid identifier:

Option A) BigOlLongStringWithMeaninglessName - This option is a valid identifier because it follows the rules for identifiers. It starts with a letter, contains only letters, digits, or underscores, and has a meaningful name.

Option B) $int - This option is a valid identifier because it starts with a dollar sign and is followed by a letter. It is common to use a dollar sign in identifiers in certain programming languages.

Option C) bytes - This option is a valid identifier because it consists of letters only and has a meaningful name.

Option D) \$1 - This option is a valid identifier because it starts with a dollar sign and is followed by a digit. However, it is generally recommended to avoid starting an identifier with a digit.

Option E) finalist - This option is a valid identifier because it consists of letters only and has a meaningful name.

Therefore, all the options (A, B, C, D, E) are valid identifiers.

Keep practicing — related questions