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