Oracle Exam 1Z0-809 Topic 2 Question 41 Discussion

Actual exam question for Oracle's 1Z0-809 exam

Question #: 41
Topic #: 2

[All 1Z0-809 Questions]

Given:

public final class IceCream {

public void prepare() {}

}

public class Cake {

public final void bake(int min, int temp) {}

public void mix() {}

}

public class Shop {

private Cake c = new Cake ();

private final double discount = 0.25;

public void makeReady () { c.bake(10, 120); }

}

public class Bread extends Cake {

public void bake(int minutes, int temperature) {}

public void addToppings() {}

}

Which statement is true?

AA compilation error occurs in IceCream.

BA compilation error occurs in Cake.

CA compilation error occurs in Shop.

DA compilation error occurs in Bread

EAll classes compile successfully.

Show Suggested Answer

Suggested Answer: D

by Adelina at Mar 02, 2023, 05:21 AM

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Sherita

16 days ago

I'm not sure, but I think E) All classes compile successfully could also be a valid answer.

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Leonie

19 days ago

I think the answer is B. There's a compilation error in the `Cake` class because the `bake()` method is marked as `final`, so it can't be overridden in the `Bread` class.

upvoted 0 times

Bernardo

2 hours ago

I agree, the answer is B. The `final` keyword in the `bake()` method causes a compilation error in the `Cake` class.

upvoted 0 times

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The correct answer is E. All classes compile successfully. The `prepare()` method in `IceCream` is public, so there's no compilation error. The `bake()` method in `Cake` is also valid, and `Shop` can create an instance of `Cake`. The `Bread` class extends `Cake`, so the `bake()` method overrides the one in `Cake`.

upvoted 0 times

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Chauncey

25 days ago

I agree with Ilona, because the method signature in Bread does not match the one in Cake.

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Ilona

1 months ago

I think the answer is D) A compilation error occurs in Bread.

upvoted 0 times

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Oracle Exam 1Z0-809 Topic 2 Question 41 Discussion

Contribute your Thoughts:

Sherita

Leonie

Bernardo

Benton

Chauncey

Ilona