var numbers = List.of(0,1,2,3,4,5,6,7,8,9);
You want to calculate the average of numbers. Which two codes will accomplish this? (Choose two.)

• A.double avg = numbers.stream().parallel().averagingDouble(a > a);
• B.double avg = numbers.parallelStream().mapToInt (m > m).average().getAsDouble ();
• C.double avg = numbers.stream().mapToInt (i > i).average().parallel();
• D.double avg = numbers.stream().average().getAsDouble();
• E.double avg = numbers.stream().collect(Collectors.averagingDouble(n > n));

Correct Answer: B,D

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Which two are functional interfaces? (Choose two.)

• A.Option E
• B.Option C
• C.Option D
• D.Option A
• E.Option B

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Given:

Which is true?

• A.The compilation fails due to an error in line 2.
• B.The compilation fails due to an error in line 6.
• C.The compilation succeeds.
• D.The compilation fails due to an error in line 7.
• E.The compilation fails due to an error in line 9.
• F.The compilation fails due to an error in line 4.
• G.The compilation fails due to an error in line 10.

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Given:

Examine these requirements:
* Eliminate code duplication.
* Keep constant the number of methods other classes may implement from this interface.
Which method can be added to meet these requirements?

• A.Option D
• B.Option A
• C.Option C
• D.Option B

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Given:

When run and all three files exist, what is the state of each reader on Line 1?

• A.All three readers have been closed.
• B.Only reader1 has been closed.
• C.All three readers are still open.
• D.The compilation fails.

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