Given:

What must be added in line 1 to compile this class?

• A.catch(IndexOutOfBoundsException e) { }catch(FileNotFoundException e) { }
• B.catch(FileNotFoundException | IOException e) { }
• C.catch(FileNotFoundException | IndexOutOfBoundsException e) { }
• D.catch(FileNotFoundException e) { }catch(IndexOutOfBoundsException e) { }
• E.catch(IOException e) { }

Comment: *

Name: *

Email: *

Verification: *

Given:

What is the result?
A)

B)

C)

D)

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

Comment: *

Name: *

Email: *

Verification: *

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

Comment: *

Name: *

Email: *

Verification: *

Given:

and:

Which code, when inserted on line 10, prints the number of unique localities from the roster list?

• A.map(e > e.getLocality())
  .count();
• B..filter(Employee::getLocality)
  .distinct()
  .count();
• C..map(e > e.getLocality())
  .collect(Collectors.toSet())
  .count();
• D..map(Employee::getLocality)
  .distinct()
  .count();

Comment: *

Name: *

Email: *

Verification: *

Given:

Which statement is equivalent to line 1?

• A.double totalSalary = list.stream().map(e -> e.getSalary() * ratio).reduce (bo).ifPresent (p -> p.doubleValue());
• B.double totalSalary = list.stream().mapToDouble(e -> e.getSalary() * ratio).sum;
• C.double totalSalary = list.stream().map(Employee::getSalary * ratio).reduce (bo).orElse(0.0);
• D.double totalSalary = list.stream().mapToDouble(e -> e.getSalary() * ratio).reduce(starts, bo);

Correct Answer: C

Comment: *

Name: *

Email: *

Verification: *