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:

Gaining Weight

An increase in body mass, typically due to an excess of calorie intake over calorie expenditure.

Body Mass Index (BMI)

A numerical computation that assesses an individual's body weight in relation to their height, used as an indicator of obesity and underweight.

DSM-5

The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, a comprehensive classification and diagnostic tool used by mental health professionals.

DSM-5

The fifth edition of the Diagnostic and Statistical Manual of Mental Disorders, a comprehensive classification of mental health conditions published by the American Psychiatric Association.