Which statement is true about a class and interfaces in Java?

Which statement is true about a class and interfaces in Java?

• A. A class can extend one superclass and implement any number of interfaces
• B. A class can extend multiple superclasses
• C. An interface cannot extend another interface
• D. A class cannot implement interfaces

Answer: (B)

Java supports single inheritance for classes and allows a class to implement multiple interfaces. This means a class can extend one superclass to inherit its implementation and fields, while also agreeing to provide the methods declared by any number of interfaces it implements. That combination is what matches how Java handles inheritance and behavior contracts. It's not possible for a class to extend more than one superclass, which is why the idea of multiple superclass inheritance isn’t valid in Java. Interfaces, on the other hand, can extend other interfaces, letting you build layered contracts. And a class can implement interfaces to satisfy those contracts, providing concrete method implementations. So the statement that reflects Java’s rules is that a class can extend one superclass and implement any number of interfaces.

Java supports single inheritance for classes and allows a class to implement multiple interfaces. This means a class can extend one superclass to inherit its implementation and fields, while also agreeing to provide the methods declared by any number of interfaces it implements. That combination is what matches how Java handles inheritance and behavior contracts.

It's not possible for a class to extend more than one superclass, which is why the idea of multiple superclass inheritance isn’t valid in Java. Interfaces, on the other hand, can extend other interfaces, letting you build layered contracts. And a class can implement interfaces to satisfy those contracts, providing concrete method implementations.

So the statement that reflects Java’s rules is that a class can extend one superclass and implement any number of interfaces.