Complete the following code snippet that returns a stream of String objects representing the majors of the students in the honors college, assuming that honorsStream is a stream of Student objects and the method getMajor returns a String.
Stream<String> honorsMajors = honorsStream
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Question

Complete the following code snippet that returns a stream of String objects representing the majors of the students in the honors college, assuming that honorsStream is a stream of Student objects and the method getMajor returns a String.
Stream<String> honorsMajors = honorsStream
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A).map(getMajor())
B).filter(s -> s.getMajor())
C).filter(getMajor())
D).map(s -> s.getMajor())

Quizplus · Accepted Answer

We need to use the map() method to transform our stream of Student objects into a stream of their majors (represented by String objects). The map() method takes a Function object as its argument, which we can specify using a lambda expression or method reference. In this case, we want to pass a method reference to the getMajor() method of the Student class, which will return the major String object for each Student object in our stream. Therefore, option D is the best choice. The other options are incorrect because they either use the filter() method instead of map() or pass incorrect arguments to the map() or filter() methods.

Complete the Following Code Snippet That Returns a Stream of String