When writing code using inheritance in java, which of the following options should be true about subclass? Subclass should have public access modifier in order to access all classes O Subclass should contain data and methods that needed for complex classes O Subclass should have data and methods that is O Subclass should have specific details of the class

Define a Course base class with the following attributes: number - course number title - course title Define a print_info() method in Course that displays the course number and title. Also define a derived class OfferedCourse with the additional attributes: instructor_name - instructor name location - class location class_time - class time

QUESTION 5 All methods in an abstract class must also be declared abstract. True False QUESTION 6 All fields declared in an interface are treated as final and static have protected access must be initialized in the class implementing the interface have private access

QUESTION 16 What must be true of a class with one abstract method? O The class must also implement the Iterable interface Any derived class must implement the method The abstract method must have the static modifier O The method cannot specify a return value QUESTION 17 Suppose we wanted to design a set of classes for a veterinarian's office. Our Customer class looks like this: public class Customer { Pet [] pets; } Select all the statements that are true Once the size of the pets array has been set, it cannot be changed Because we're using an array, all pets must be the same A customer must have at least one pet We also need to declare a Pet class QUESTION 18 What is the proper use of an enumeration? To define a set of ordered values To enforce the use of the Comparable interface O To define, or enumerate, the values returned by a Random object generator O To define the classes in an inheritance hierarchy