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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Galen

2 months ago

I'm stumped. Maybe I should just become an electrician instead - no complicated billing rules to worry about!

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Cristy

2 months ago

Option C looks like it would work, but it's a bit too open-ended. I prefer the more controlled approach of Option B to keep the bill calculation secure.

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Billye

11 days ago

I see your point about Option C being open-ended. Option B does seem like a better choice for maintaining security in the bill calculation.

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Tori

16 days ago

I think Option A might be too restrictive, so I also lean towards Option B for a more controlled approach.

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Gary

24 days ago

I agree, Option B seems like the safer choice to ensure the bill calculation remains secure.

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Chantell

2 months ago

Haha, good one! Option A would be like letting the customer be the accountant. Might as well just give them the keys to the vault!

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Joana

1 months ago

Option A is a no-go. We need to keep the bill in check, no customer tampering allowed.

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Margery

1 months ago

I agree, giving customers control over the bill is a bad idea. Option A is definitely out.

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Destiny

2 months ago

Yeah, Option A sounds risky. We can't let customers mess with the bill.

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Lelia

2 months 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

2 months 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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Tish

20 days ago

Choosing Option B would align with the requirement to prevent customers from decreasing the bill value.

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Leatha

1 months ago

I think Option C and D are not as suitable for maintaining the integrity of the bill variable.

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Shelton

2 months ago

Option A might not provide the necessary protection against customers tampering with the bill value.

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Ettie

2 months ago

I agree, Option B would ensure that the bill is always calculated correctly based on electricity usage.

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Beata

3 months ago

That's a good point, Ashlyn. Option C does offer better protection against tampering. I see your point now.

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Ashlyn

3 months ago

I disagree, I believe the answer is Option C because it provides a more secure way to prevent tampering with the bill variable.

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Beata

3 months ago

I think the answer is Option A because it seems like the most straightforward way to ensure the bill is always calculated correctly.

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