Oracle Exam 1Z0-819 Topic 5 Question 39 Discussion

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

Question #: 39
Topic #: 5

[All 1Z0-819 Questions]

Which two var declarations are correct? (Choose two.)

Avar names = new ArrayList<>();

Bvar _ = 100;

Cvar var = ''hello'';

Dvar y = null;

Evar a;

Show Suggested Answer

Suggested Answer: C

by Geoffrey at May 28, 2022, 08:08 PM

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Berry

5 days ago

C is clearly wrong. You can't use 'var' as a variable name, that's just silly. I'd say B and D are the right choices.

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Ivan

I think B and D are the correct choices. They seem to be valid var declarations.

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Goldie

1 days ago

I agree, C is definitely wrong. Using 'var' as a variable name is not allowed.

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Blondell

19 days ago

I'm going with B and E. Using 'var' to declare a variable without an initial value is also valid.

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Ezekiel

2 days ago

I think B and E are correct too. 'var' can be used without an initial value.

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Queenie

20 days ago

I think B and D are the correct options here. Declaring a variable with 'var' and initializing it with a value or null is valid in JavaScript.

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Lynelle

27 days ago

Yeah, those two options seem to be the only correct ones based on the rules for declaring variables in JavaScript.

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Laurel

1 months ago

I agree with you, Lynelle. I also think D) var y = null; is correct because it's declaring a variable with a null value.

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Lynelle

1 months ago

I think B) var _ = 100; is correct because it's assigning a value to a variable.

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