Oracle Exam 1Z0-808 Topic 18 Question 112 Discussion

Actual exam question for Oracle's 1Z0-808 exam

Question #: 112
Topic #: 18

Given these two classes:

Any amount of electricity used by a customer (represented by an instance of the Customer class) must contribute to the customer's bill (represented by the member variable bill) through the useElectricity method.

An instance of the Customer class should never be able to tamper with or decrease the value of the member variable bill.

How should you write methods in the ElectricAccount class at line n1 so that the member variable bill is always equal to the value of the member variable kwh multiplied by the member variable rate?

AOption A

BOption B

COption C

DOption D

Show Suggested Answer

Suggested Answer: C

by Kanisha at Feb 11, 2025, 10:39 AM

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Lelia

3 days ago

I'm going with Option D. Encapsulating the bill calculation within the ElectricAccount class ensures the integrity of the data and prevents the customer from making unauthorized changes.

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Craig

4 days ago

Option B seems the most logical choice to enforce the requirement that the customer's bill cannot be tampered with. The method should allow updating the bill based on the electricity usage, but not allow the customer to directly modify the bill value.

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