Java 8 Quiz Challenge Welcome to your Java 8 Mastery Quiz: Test Your Knowledge! 1. Which interface is a functional interface in Java 8? Runnable Serializable Comparator Callable None 2. What does the reduce() method in Java 8 streams do? Combines elements into a single value Sorts elements in natural order Filters elements based on a predicate Applies a function to each element None 3. What is the purpose of the forEach() method in Java 8 streams? To collect elements into a collection To sort elements in natural order To iterate over elements in a collection To filter elements based on a predicate None 4. Which method is used to terminate a stream and collect its elements into a collection? filter() collect() forEach() map() None 5. What is a lambda expression in Java 8? An anonymous function A collection data structure A type of variable A lightweight thread None 6. How is a method reference represented in Java 8? :: >> => -> None 7. What does the map() method in the Stream API do? Filters elements based on a predicate Sorts elements in natural order Applies a function to each element Reduces elements to a single value None 8. Which functional interface represents a supplier of results? Function Consumer Predicate Supplier None 9. Which interface is used to define custom functional interfaces in Java 8? Predicate Consumer @FunctionalInterface Function None 10. Which method is used to create an infinite stream in Java 8? filter() map() generate() limit() None Please share your feedback in the comment box below. Congratulations on completing the Java 8 Mastery Quiz! Explore Java 8 concepts further at JavaDZone. Name Email Time's upTime is Up!
