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