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