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1Z0-819 Valid Test Simulator, Valid Dumps 1Z0-819 Sheet

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Oracle Java SE 11 Developer Sample Questions (Q178-Q183):

NEW QUESTION # 178
Given the code fragment:

Which can replace line 11?

A. UnaryOperator<Interger > uo = (var x ) -> (x * 3);
B. UnaryOperator<Interger >uo = var x -> { return x 3 ; };
C. UnaryOperator<Interger >uo = (int x) -> x * 3;
D. UnaryOperator<Interger >uo = x -> { return x * 3; };

Answer: A

NEW QUESTION # 179
Given the code fragment:

What is the result?

A. 2 4 6 8
B. 13 5 7 9
C. 1 3 5 7 9 11
D. 2 4 6 B 10

Answer: C

NEW QUESTION # 180
Given TripleThis.java:

Compiling TripleThis.java gives this compiler warning:
Note: TripleThis.java uses unchecked or unsafe operations.
Which two replacements done together remove this compiler warning?

A. Replace line 12 with public static <T> void printValue (Function<T, T> f, T num ) {,
B. Replace line 12 with public static int printValue function<Integer, Integer>, f, T num {.
C. Replace line 9 with function<Integer>, Integer> = X -> { return (integer) x * 3; }.
D. Replace line 12 with public static void printValue function<Integer> f, int num) {.
E. Replace line 9 with function<Integer> tripler = x-> - { return (Integer) X * 3 ; }.

Answer: B,E

NEW QUESTION # 181
Given the code fragment:

Which code fragment replaces the for statement?

A. intstream.rangeclosed(l, 100).mapToObj{FizzBuzz::convert).forEach(System.out::printIn);
B. IntStream.rangeClosed(l, 100).map(FizzBuzz::convert).forEach(System.out::println);
C. IntStream.range(1, 100).mapToObj(FizzBuzz::convert).forEach(System.out::println);
D. IntStream.ranged, 100).map(FizzBuzz::convert).forEach(System.out::println);

Answer: B

NEW QUESTION # 182
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.parallelStream().mapToInt (m > m).average().getAsDouble ();
B. double avg = numbers.stream().parallel().averagingDouble(a > a);
C. double avg = numbers.stream().average().getAsDouble();
D. double avg = numbers.stream().collect(Collectors.averagingDouble(n > n));
E. double avg = numbers.stream().mapToInt (i > i).average().parallel();

Answer: A,C

Explanation:

NEW QUESTION # 183
......

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