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Oracle

1Z0-819 · Question #50

Given var numbers = List.of(1,2,3,4,5,6,7,8,9,10); for(int a: numbers){ StringBuilder sb = new StringBuilder(); sb.append(a); sb.append(""); system.out.println(sb.toString()); } Which statement on…

The correct answer is A. Function<Integer, Integer> f = n -> n*2. See the full explanation below for the reasoning.

Question

Given var numbers = List.of(1,2,3,4,5,6,7,8,9,10); for(int a: numbers){ StringBuilder sb = new StringBuilder(); sb.append(a); sb.append(""); system.out.println(sb.toString()); } Which statement on line 1 enables this code to compile?

Options

  • AFunction<Integer, Integer> f = n -> n*2;
  • BFunction<Integer> f = n -> n*2;
  • CFunction<int> f = n -> n*2;
  • DFunction<int,int> f = n -> n*2;

How the community answered

(27 responses)
  • A
    70% (19)
  • B
    4% (1)
  • C
    19% (5)
  • D
    7% (2)

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