Salesforce DEX-450 Exam - Topic 8 Question 70 Discussion

Actual exam question for Salesforce's DEX-450 exam

Question #: 70
Topic #: 8

A developer must implement a CheckPaymentProcessor class that provides check processing payment capabilities that adhere to what defined for payments in the PaymentProcessor interface. public interface PaymentProcessor { void pay(Decimal amount); } Which is the correct implementation to use the PaymentProcessor interface class?

APublic class CheckPaymentProcessor implements PaymentProcessor {
public void pay(Decimal amount) {}
}

BPublic class CheckPaymentProcessor implements PaymentProcessor {
public void pay(Decimal amount);
}

CPublic class CheckPaymentProcessor extends PaymentProcessor {
public void pay(Decimal amount);
}

DPublic class CheckPaymentProcessor extends PaymentProcessor {
public void pay(Decimal amount) {}
}

Show Suggested Answer

Suggested Answer: B

by Bulah at Apr 02, 2023, 03:10 AM

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Lai

5 months ago

Totally agree with A, it’s straightforward!

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Hyman

6 months ago

I’m surprised there’s no abstract method in B.

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Arminda

6 months ago

Wait, isn't C just wrong? You can't extend an interface!

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Lottie

6 months ago

I think D is better since it extends the interface.

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Stefan

6 months ago

Option A is the correct implementation!

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Gracia

6 months ago

I’m leaning towards option D because it has the method implemented, but I’m confused about the use of 'extends' instead of 'implements'.

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Elli

6 months ago

I feel like option C is wrong since you can't extend an interface directly. It should be implementing it instead.

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Elliot

6 months ago

I'm not entirely sure, but I remember something about abstract methods needing to be implemented. Maybe option B is right?

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Lina

6 months ago

I think option A looks correct because it implements the method properly with a body.

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Tonja

7 months ago

I'm a little confused on the differences between the storage technologies listed. I'll have to review my notes on fiber channel, SAN, DAS, and NAS to make sure I choose the right answer.

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Michel

7 months ago

Okay, let me think this through step-by-step. I need to identify the three true statements from the options provided.

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Alberto

7 months ago

I remember practicing a question like this where the dual stack approach was highlighted as common. Based on that, I'd lean towards "C," but I'm still second-guessing myself.

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