Oracle Exam 1Z0-819 Topic 8 Question 87 Discussion

Actual exam question for Oracle's 1Z0-819 exam

Question #: 87
Topic #: 8

[All 1Z0-819 Questions]

Given the code fragment:

Which can replace line 2?

AUnaryOperator u = (int i) -> i * 2;

BUnaryOperator u = (var i) -> (i * 2);

CUnaryOperator u = var i -> { return i * 2; };

DUnaryOperator u = i -> { return i * 2);

Show Suggested Answer

Suggested Answer: B

by Kristine at Aug 07, 2024, 09:10 PM

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Ahmed

3 months ago

Hmm, that makes sense. But I still think option A is more concise and clear.

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Jade

3 months ago

I disagree, I believe option C is the right choice as it includes the return statement within curly braces.

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Ahmed

3 months ago

I think option A is correct because it directly returns the result of i * 2.

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Lenna

3 months ago

I think option D is definitely incorrect because it has a syntax error with the closing parenthesis.

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Mila

4 months ago

I agree with Willard. Option B is the way to do it. Nice and concise.

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Willard

4 months ago

Option B is the correct answer. Using 'var' for the parameter type is the way to go in this case.

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Jeannine

2 months ago

Option D has a syntax error, the closing curly brace should be before the parenthesis.

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Stevie

2 months ago

I prefer option C, using curly braces for the return statement is more readable.

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Georgeanna

2 months ago

I disagree, option B is more concise and modern with 'var'.

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Jolene

3 months ago

I think option A is better, using 'int' explicitly makes it clearer.

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Raina

3 months ago

Yes, using 'var' for the parameter type is the way to go in this case.

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Raina

4 months ago

I think option B is the correct answer.

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Arlette

4 months ago

But option C also seems valid as it includes a return statement within curly braces.

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Barrie

4 months ago

I disagree, I believe option B is the correct answer as it uses the 'var' keyword for type inference.

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Arlette

4 months ago

I think option A is correct because it specifies the data type for the parameter.

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