Which of the following generic class headings is NOT correct, assuming that Vehicle and Laptop are existine classes and Cloneable is an interface: Select one: O class AA O class AAT extends Cloneable>
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OOPs
In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.
Constructor
The easiest way to think of a constructor in object-oriented programming (OOP) languages is:
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- Which of the following statements is TRUE about interfaces? OAn interface can implement one or more interfaces. ONone of them OAn interface extends the class Object by default. () An interface can contain no more than one constructor. An interface must at least contain one abstract method.Which of the following statements are true? Group of answer choices 1. A superclass reimplements the functionality of its subclasses. 2. A class that implements an interface reuses the functionality of the interface. 3. A derived class reuses the functionality instead of reimplements it. 4. If a class has no bugs, we can inherit from it without fear of having any bugs in our class.Which of the following statements is TRUE about interfaces? None of them An interface can implement one or more interfaces. An interface extends the class Object by default. An interface can contain no more than one constructor. An interface must at least contain one abstract method.
- Create an interface RateConstants that includes a constant value for the subscription rate that is $15.5. Create a class NewspaperSubsciption that implements the RateConstants interface. A NewspaperSubscription class includes fields for the subscriber’s name and rate. The constructor requires data for name only. The rate should be set to the subscription rate of RateConstants. The name should not contain digits. If the name contains digits, raise an exception InvalidNameException. Create a class name InvalidNameException. The NewspaperSubscription class should throw an exception named InvalidNameException when it receives an invalid subscriber’s name. Create a class PhysicalNewspaperSubcription that extends NewspaperSubscription class. The PhysicalNewspaperSubscription class should have a field for subscription type and a constructor to sets the subscription type to “PhysicalSUB”. The PhysicalNewspaperSubscription class should also have a toString() method to displays all the…To implement an interface, a concrete class must implement AT LEAST ONE method headings listed in the definition of the interface. False. True.When a class implements an interface with default methods and overrides them, the class inherits the default methods’ implementations. An interface’s designer can now evolve an interface by adding new default and static methods without breaking existing code that implements the interface. State whether the statement is true or false. If false, explain why.
- Which of the following statement is true? O A class can extend zero or more parents, and can implement zero or more interfaces. O A class can extend zero or more parents. O A class can implement an interface and extend a parent class, but not do both. O A class can implement zero or more interfaces.Create a class Course to describe a course according to the following requirements: A course has three attributes: courseName, courseCode, fees. Create a constructor without parameters to initialize all the instance variables to default values (0 for numbers and "" for a string). Create a constructor to initialize all the attributes to specific values. Add all setter and getter methods Create a tester class with the main method. The tester class must be named using your first and last In this class performs the following: Create a course object c1 using the default constructor. Create a course object c2 with the following information: courseName =” object oriented programing”, courseCode = “CS230” , fees = a value from your choice. Change the course fees of c2 to your age. Print the course information of c2 using getter methods I attached Typical run of the programWhich is true? Group of answer choices A class can implement multiple interfaces A class can inherit from multiple classes A class can implement only one interface An interface can implement multiple classes
- Exercise 1: Design an interface named ConversionFactors that declare instance variable called inTOMm with value 25.3, ounToGram with value 28.35, and pounToGram with value 453.59. Besides, design an interface named Conversions that contains method declarations for inToMm, ounToGram and pounToGram. All the methods return a double type value and do not has parameter. For an example, method inToMm converts inches to millimeters using the formula inches * inToMm. Next, design a class named myClass that implements ConversionFactors and Conversions.myClass has instance variable called pounds, inches, and ounces, constructor and implements all the methods declared in Conversions interface. The following is the output example when creating myClass object by initializing 50, 25, 100 to pounds, inches, and ounces respectively: 50.0 pounds is equal to 22679.5 gram 100.0 ounces is equal to 2835.0 gram 25.0 inches is equal to 632.5 milimeter Draw UML diagrams that involves myClass,…In Java, declaring a class abstract is useful ... When it doesn't make sense to have objects of that class. To prevent developers from further extending the class. When default implementations of some methods are not desirable. When it makes sense to have objects of that class.To implement an interface, a concrete class must implement AT LEAST ONE method heading.False.True.