Your Program Uses a Map Structure to Store a Number

question 100

Multiple Choice

Your program uses a Map structure to store a number of user ids and corresponding email addresses.Although each user must have a unique id, two or more users can share the same email address.Assuming that all entries in the map have valid email addresses, select an appropriate expression to complete the method below, which adds a new id and email address to the map only if the id is not already in use.If the id is already in use, an error message is printed.

• A)!currentEmail.equals(email)
• B)currentEmail.equals(email)
• C)currentEmail != null
• D)currentEmail == null

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Definitions:

Types

Categories or classifications that distinguish between different forms or varieties of objects, concepts, or phenomena.

Employee Selection

The process of evaluating and choosing individuals for employment in an organization based on criteria and methods such as interviews and tests.

Multiple-hurdle Model

A selection process in which an applicant must successfully pass a series of tests or criteria to move to the next stage of evaluation.

Employment Tests

Assessments used by employers to evaluate a candidate's qualifications, skills, or suitability for a specific job or role.