Java 8 FP Quest

Test

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Parties jouées 98 %Précision 87 Temps moyen 03:42

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À propos de cette activité

A gamified FP jaunt through Java 8.

Créé par

Swati Nikam

India

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1	swathi 3 Juillet 2026	% 100	01:53
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7	Akshay 4 Juin 2026	% 90	01:13
8	Sangeeta Mahto 3 Juillet 2026	% 90	01:15
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Java 8 FP Quest


Java 8 FP QuestVersion en ligne A gamified FP jaunt through Java 8. par Swati Nikam 1 Beginner: Which lambda filters customers with balance > 1000 in a stream? a c -> c.balance > 1000 b c -> c.getBalance() > 1000 c c => c.getBalance() > 1000 d c -> { balance > 1000; } 2 Beginner: Which code sorts a list by name using a method reference? a Collections.sort(nameList) b Comparator.sortBy(Customer::getName) c Customer::getName d Comparator.comparing(Customer::getName) 3 Beginner: Which functional interface matches a function taking T and returning R? a Function b Supplier c Predicate d Consumer 4 Intermediate: Which operation creates a stream from a list and maps to ages? a stream(list).map(Person.age) b list.stream().map(Person::getAge) c list.stream().filter(Person::getAge) d list.map(Person::getAge) 5 Intermediate: Which concept is a closure in Java? a A lambda capturing final effectively final variables b A static class inside a class c An anonymous inner class with no access to outer vars d A variable declared inside a loop 6 Intermediate: Which method reference demonstrates a constructor reference? a Person::size b Person::new c new Person() d Person::getName 7 Advanced: Which is true about default methods in interfaces? a They provide an implementation that implementing classes inherit b They replace interfaces with abstract classes c They can’t call static methods d They force classes to override all methods 8 Advanced: What does a static method in an interface imply? a It belongs to the interface type, not instances b It cannot be used with lambdas c It can only be overridden by implementing classes d It requires an instance to be called 9 Advanced: Which higher-order function chain computes total length of all names? a names.stream().length().sum() b names.stream().forEach(String::length) c names.stream().map(String::length).reduce(0, Integer::sum) d names.map(String.length()).sum() 10 Advanced: Predict the output of this snippet: list.stream().filter(x -> x > 5).count() a It returns the number of elements greater than 5 b It mutates the list c It returns a boolean d It prints all elements

Vous pouvez intégrer le jeu dans un LMS compatible avec LTI 1.1 ou LTI 1.3 comme Canvas, Moodle ou Blackboard. Les scores seront ainsi automatiquement enregistrés dans le carnet de notes de la plateforme.

Java 8 FP Quest

Test

À propos de cette activité

Créé par

Téléchargez la version pour jouer sur papier

Top Jeux

Test

Photosynthesis vs Cellular Respiration - Practice Quiz

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UPS 5 Seeing Habits Quiz

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Spanish Alphabet Listening

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Practice Quiz - Punnett Square, Variation, and Mutations

Java 8 FP QuestVersion en ligne

par Swati Nikam

Beginner: Which lambda filters customers with balance > 1000 in a stream?

Beginner: Which code sorts a list by name using a method reference?

Beginner: Which functional interface matches a function taking T and returning R?

Intermediate: Which operation creates a stream from a list and maps to ages?

Intermediate: Which concept is a closure in Java?

Intermediate: Which method reference demonstrates a constructor reference?

Advanced: Which is true about default methods in interfaces?

Advanced: What does a static method in an interface imply?

Advanced: Which higher-order function chain computes total length of all names?

Advanced: Predict the output of this snippet: list.stream().filter(x -> x > 5).count()