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