Oracle Exam 1Z0-809 Topic 16 Question 78 Discussion

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

Question #: 78
Topic #: 16

[All 1Z0-809 Questions]

Which two methods from the jav

a.util.stream.Stream interface perform a reduction operation? (Choose two.)

Acount ()

Bcollect ()

Cdistinct ()

Dpeek ()

Efilter ()

Show Suggested Answer

Suggested Answer: A, B

by Maurine at Nov 15, 2024, 09:22 AM

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Halina

5 months ago

Reduction operations? Is this an exam for accountants or something? I thought we were supposed to be writing code, not doing math!

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Quentin

4 months ago

Oh, I see. Thanks for clarifying that. I'll keep that in mind for my coding.

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Wilson

4 months ago

Don't worry, it's just part of programming. The methods are count() and collect().

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Edelmira

5 months ago

Wait, isn't collect() for collecting the results into a data structure, not really a reduction? I'm pretty sure the correct answers are reduce() and forEach().

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Kayleigh

5 months ago

Ah, I got this! It's collect() and reduce(). Those are the two reduction operations in the Stream interface. Easy peasy!

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Earleen

3 months ago

No problem, happy to help!

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Fidelia

3 months ago

I always get confused with those, thanks for clarifying!

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Adell

3 months ago

Yes, you're right! collect() and reduce() are the two methods for reduction operations in the Stream interface.

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Kanisha

3 months ago

E) filter ()

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Nichelle

3 months ago

D) peek ()

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Emeline

4 months ago

C) distinct ()

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Colette

4 months ago

B) collect ()

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Daniel

4 months ago

A) count ()

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Kristal

5 months ago

Dude, what kind of exam is this? I thought we were supposed to be learning about streams, not counting methods! This is making my head spin.

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Rossana

4 months ago

Let's focus on remembering 'count()' and 'collect()' for reduction.

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Nobuko

4 months ago

I think 'filter()' and 'distinct()' are for filtering, not reduction.

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Adrianna

4 months ago

Yeah, I agree. 'count()' and 'collect()' are the ones for reduction.

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Nicolette

5 months ago

I know, this is confusing. I think the methods for reduction are 'count()' and 'collect()'.

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Rosita

5 months ago

Hmm, I think count() and reduce() are the reduction methods, but I'm not 100% sure. I'll have to double-check the docs on that.

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Krystal

5 months ago

I'm not sure about this. Can someone explain why count() and collect() are used for reduction?

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Alverta

5 months ago

I'm pretty sure collect() and reduce() are the reduction operations in the Stream interface. I use those all the time in my coding.

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Cristy

4 months ago

It's good to know that those are the correct methods to use for reduction in the Stream interface.

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Shaniqua

4 months ago

I always use collect() and reduce() for reducing operations as well.

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Ahmed

4 months ago

Yes, you're right. Those are the two methods that perform reduction operations.

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Markus

5 months ago

reduce() is great for performing a reduction operation on the elements of a stream.

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Juliana

5 months ago

I always use collect() when I need to combine elements in a stream.

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Jolanda

5 months ago

I think you meant collect() and reduce() instead of distinct().

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Ashton

5 months ago

Yes, you're right. collect() and reduce() are the correct methods for reduction operations.

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Rolf

5 months ago

I think you meant collect() and reduce() instead of distinct().

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Stephanie

6 months ago

I agree with Lavelle. Count() and collect() are used for reduction in Stream interface.

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Lavelle

6 months ago

I think A) count() and B) collect() perform reduction operations.

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