Java – Page 112 – Sharp: NCLEX, Java & Python

Java: Interfaces

Why might you use a marker interface in Java?

How would you explain a functional interface in a Java interview?

How do interfaces enable multiple capabilities in Java?

Why are interfaces crucial for testability and substitution in Java applications?

How do interfaces improve testability and substitution in Java?

Why does functional interfaces matter in practice?

How do private methods in interfaces enhance code organization?

How do interfaces support the Open/Closed Principle?

What keyword is used to declare an interface?

How do interfaces define contracts in Java?