Exam 1z0-809 topic 1 question 15 discussion

Actual exam question from Oracle's 1z0-809

Question #: 20
Topic #: 2

java.util.function.Function interface?
Which statement is true about the single abstract method of the void.

A. It accepts one argument and returns boolean.
B. It accepts one argument and returns
C. It accepts one argument and always produces a result of the same type as the argument.
D. It accepts an argument and produces a result of any data type.

Show Suggested Answer

Suggested Answer: C 🗳️
Reference: http://winterbe.com/posts/2014/03/16/java-8-tutorial/ (functions)

by adnano1234 at Jan. 14, 2020, 8:54 a.m.

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Highly Voted 4 years, 6 months ago

Answer is D The function method accepts type T argument and return a generic type R, which could be any data type.

upvoted 6 times

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Most Recent 5 months, 3 weeks ago

Selected Answer: D

Answer is D. The function method accepts type argument and return a generic type, which could be any data type.

upvoted 1 times

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5 months, 3 weeks ago

Selected Answer: D

D is true.

upvoted 1 times

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4 years, 6 months ago

Function<String, Integer> toInteger = Integer::valueOf So it takes one argument and return as result one of any types

upvoted 4 times

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