Given: public class Test { public static void main(String[] args) { List elements = Arrays.asList("car", "truck", "car", "bicycle", "car", "truck", "motorcycle"); Map outcome = elements.stream().collect(Collectors.groupingBy(Function.identity(), Collectors.counting() ) ); System.out.println(outcome); } } What is the result?

A. Bicycle=7, car=7, motorcycle=7, truck=7)

B. 3:bicycle, 0:car, 0motorcycle, 5:truck)

C. Bicycle, car, motorcycle, truck)

D. Bicycle=1, car=3, motorcycle=1, truck=2)

Oracle

1Z0-829 · Question #27

1Z0-829 Question #27: Real Exam Question with Answer & Explanation

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Working with Streams and Lambda expressions

Question

Given:
public class Test {
public static void main(String[] args) {
List<String> elements =
Arrays.asList("car", "truck", "car",
"bicycle", "car", "truck", "motorcycle");
Map<String, Long> outcome =
elements.stream().collect(Collectors.groupingBy(Function.identity(), Collectors.counting() ) );
System.out.println(outcome);
}
}
What is the result?

Options

ABicycle=7, car=7, motorcycle=7, truck=7)
B3:bicycle, 0:car, 0motorcycle, 5:truck)
CBicycle, car, motorcycle, truck)
DBicycle=1, car=3, motorcycle=1, truck=2)
ECompilation fails.

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Topics

#Collectors#groupingBy#Stream API#Functional interfaces

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