M Mr. Dubey 🎓 Coach ⭐ 103.71K Points 📊 JAVA Q. What is a functional interface in Java? (A) An interface with default methods only (B) An interface with exactly one abstract method (C) Any interface with static methods (D) Any abstract class 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (B) An interface with exactly one abstract method Explanation: A functional interface has exactly one abstract method, enabling it to be used with lambda expressions.