as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
differentiate between abstract classes and interface
user
an abstract class is a class that contains one or more abstract methods which are methods without an implementation. an interface is a type that defines a set of behaviors that a class must implement. an interface does not contain any implementation, while an abstract class may contain implementation. an interface can be implemented by multiple or any class, while an abstract class can only be inherited by a single class.
assistant