Salesforce Exam CRT-450 Topic 7 Question 48 Discussion

Actual exam question for Salesforce's CRT-450 exam

Question #: 48
Topic #: 7

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 Gladys at Apr 09, 2024, 06:24 AM

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Slyvia

7 months ago

Haha, I bet the dSlyvialoper who came up with these options has a sense of humor. They're really testing our understanding of interfaces!

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Melinda

6 months ago

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

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Melinda

6 months ago

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

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An

7 months ago

Option D is incorrect. You can't extend the PaymentProcessor interface and provide an empty implementation of the pay() method.

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Jame

7 months ago

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

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Georgiana

7 months ago

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

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Ryan

7 months ago

Option C is wrong. You can't extend the interface, you need to implement it.

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Jannette

6 months ago

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

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Nilsa

6 months ago

B) Public class CheckPaymentProcessor implements PaymentProcessor { public void pay(Decimal amount);

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Antonio

7 months ago

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

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Lura

7 months ago

Option B is incorrect because it only declares the pay() method but doesn't provide an implementation.

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Minna

7 months ago

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

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Denna

7 months ago

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

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Bong

7 months ago

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

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Dalene

7 months ago

Hmm, the correct implementation should be option A. It implements the PaymentProcessor interface and provides the required pay() method implementation.

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Cammy

7 months ago

Yes, I agree. It implements the PaymentProcessor interface correctly.

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Willow

7 months ago

I think option A is the correct implementation.

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Sherita

7 months ago

Yes, option A implements the PaymentProcessor interface and provides the pay() method.

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Launa

7 months ago

I think option A is the correct implementation.

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Vincent

8 months ago

I see your point, but I believe option D is the correct choice as it extends the interface and provides the method implementation.

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Clay

8 months ago

I'm not so sure, I think option C might also work because it extends the PaymentProcessor interface.

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Tamesha

9 months ago

I agree with you, option A looks like the right choice to implement the PaymentProcessor interface.

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Antione

9 months ago

I think the correct implementation is option A because it implements the interface correctly.

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Yoko

9 months ago

Haha, yeah, extending the interface is a bit strange. It's like trying to reinvent the wheel. I'd go with option A - it's simple and straightforward.

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Nieves

9 months ago

Okay, so options A and B are out. What about C and D? Extending the PaymentProcessor interface seems like it might be overkill. Shouldn't we just implement the interface directly?

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Josephine

10 months ago

Yeah, I agree. Option B just doesn't sit right with me. If the interface requires a pay() method, the concrete class should provide a complete implementation, not just a declaration.

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Leota

10 months ago

I don't know, option B seems a bit weird to me. Leaving the pay() method declaration abstract in the concrete implementation class feels like it's missing something. Shouldn't the concrete class have a complete implementation?

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Kathrine

8 months ago

I agree with you, Cora. Option A is the way to go here.

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Cora

8 months ago

I think option A is correct. It provides a complete implementation of the pay() method.

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Kristofer

10 months ago

Hmm, good point. The interface documentation doesn't specify whether the pay() method needs to be concrete or not. I'd say option A is the most straightforward implementation, as it directly implements the interface's pay() method, even if it's empty.

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Janine

10 months ago

This is a tricky question. I'm not sure if I fully understand the requirements of the PaymentProcessor interface. Does the interface require the concrete implementation to have a concrete implementation of the pay() method, or can it be abstract?

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