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Java SE 8 Programmer II Exam Questions

Oracle

Java SE 8 Programmer II

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Question 2:

Given: IntStream stream = IntStream.of (1,2,3); IntFunction<Integer> inFu= x -> y -> x*y;//line n1 IntStream newStream = stream.map(inFu.apply(10)); //line n2 newStream.forEach(System.output::print); Which modification enables the code fragment to compile? 

Answer options:

A. Replace line n1 with: IntFunction<UnaryOperator> inFu = x -> y -> x*y;
B. Replace line n1 with: IntFunction<IntUnaryOperator> inFu = x -> y -> x*y;
C. Replace line n1 with: BiFunction<IntUnaryOperator> inFu = x -> y -> x*y;
D. Replace line n2 with: IntStream newStream = stream.map(inFu.applyAsInt (10));