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:

401k Plan

A retirement savings plan sponsored by an employer allowing employees to save and invest a portion of their paycheck before taxes are taken out.

Take Home

The net amount of income that an individual actually receives after all deductions, such as taxes and social security contributions.

Taxable Bond Portfolio

A collection of bonds whose interest payments are subject to federal and possibly state income taxes.

Roth Retirement Plan

A type of retirement savings plan allowing taxable withdrawals to be made tax-free, provided certain conditions are met.