JAVA CERTIFICATION QUESTION: Search stream data using t...

JAVA CERTIFICATION QUESTION: Search stream data using the findFirst, findAny, and anyMatch methods (advanced)

· java

Streams are complicated. With the right approach, they can be very efficient too.

Given the following code:

List<String> src = List.of("Java 11", "Exam");

Which code fragment determines if the word “Java” is present in the src list in the most computationally efficient way? Choose one.

A.

List<String> res = List.of();
src.stream()
.peek(v -> { if (v.contains("Java")) res.add(v); })
.count();
var a = (res.size() > 0);

B.

var a = src.stream().filter(v -> v.contains("Java")).findAny();

C.

var a = src.stream().anyMatch(v -> v.contains("Java"));

D.

var a = src.stream()
.filter(v -> v.contains("Java"))
.collect(Collectors.toList());