Oracle Exam 1Z0-809 Topic 5 Question 67 Discussion

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

Question #: 67
Topic #: 5

[All 1Z0-809 Questions]

Given the code fragments:

and

Which two modifications enable to sort the elements of the emps list? (Choose two.)

AReplace line n1 withclass Person extends Comparator<Person>

BAt line n2 insertpublic int compareTo (Person p) {return this.name.compareTo (p.name);}

CReplace line n1 withclass Person implements Comparable<Person>

DAt line n2 insertpublic int compare (Person p1, Person p2) {return p1.name.compareTo (p2.name);}

EAt line n2 insert:public int compareTo (Person p, Person p2) {return p1.name.compareTo (p2.name);}

FReplace line n1 withclass Person implements Comparator<Person>

Show Suggested Answer

Suggested Answer: B, C

by Aliza at Jul 10, 2024, 08:08 PM

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Kate

4 months ago

Haha, looks like we're sorting a list of people. I bet they all have names like 'John Smith' or 'Jane Doe'. Time to get creative with those names!

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Tien

3 months ago

Malissa: I agree! Let's come up with some unique names for the list of people we're sorting.

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Roselle

4 months ago

How about we get really creative with the names and make it more fun?

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Malissa

4 months ago

Yeah, and we should insert public int compare (Person p1, Person p2) {return p1.name.compareTo (p2.name); at line n2.

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Samira

4 months ago

I think we need to replace line n1 with class Person extends Comparator.

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Ceola

5 months ago

I agree with Wenona, options B and D make sense for sorting the elements.

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Kristofer

5 months ago

I agree with Shelia. Implementing the Comparable interface is the way to go here.

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Tuyet

4 months ago

C) Replace line n1 withclass Person implements Comparable

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Raelene

4 months ago

A) Replace line n1 withclass Person extends Comparator

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Wenona

5 months ago

But option B and D both involve comparing names, which is needed for sorting.

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Gregoria

5 months ago

I disagree, I believe option C and F are the right choices.

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Shelia

5 months ago

Option C is the correct answer. The Person class needs to implement the Comparable interface to sort the elements of the emps list.

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Mable

4 months ago

Great, so we need to choose option C and make that modification in the code.

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Tonette

4 months ago

That makes sense. It's important for sorting the elements of the emps list.

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Franklyn

4 months ago

Yes, you're right. The Person class needs to implement the Comparable interface.

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Twana

5 months ago

I think option C is the correct answer.

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Wenona

5 months ago

I think option B and D are the correct modifications.

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