Question

what is dynamic method lookup? group of answer choices dynamic method lookup is the process of finding a method amongst a collection of classes that do not have a common superclass (other than object). dynamic method lookup is the process of determining, at runtime, what method will be invoked based on the type of the object. dynamic method lookup is the process of overriding a method in a subclass that has already been defined in the superclass. dynamic method lookup is the process of finding a method in a superclass when it has not been overridden in a subclass.

Answer 1

Dynamic method lookup is the runtime determination of which method to invoke based on the type of the object, allowing for flexible object behavior.

Step-by-step explanation:

Dynamic method lookup is a mechanism in object-oriented programming languages where the method to be invoked on an object is determined at runtime. The correct choice from the student's options would be: dynamic method lookup is the process of determining, at runtime, what method will be invoked based on the type of the object. This allows for a flexible and extensible program design where objects can have different implementations of a method and the appropriate one is chosen when the method is called.

For example, consider a class hierarchy where 'Animal' is a superclass and 'Dog' and 'Cat' are subclasses. If both subclasses override a method named 'sound', the dynamic method lookup will determine which 'sound' method to call based on whether the object is an instance of 'Dog' or 'Cat' at runtime.