superclass
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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:
Assume you have a method expecting the superclass's object to be passed as an argument. In this case, if you give it an object of subclass rather than superclass. Is it acceptable? Why or why not? (Write in maximum 5 lines)
Step by step
Solved in 2 steps
- Assume you have a method that requires the superclass's object as an argument. If you offer it a subclass object rather than a superclass object in this scenario. Is it appropriate? Why do you think that is?Assume you have a method that expects an object of the superclass to be provided as an argument. This time, instead of a superclass object, you should provide it. Is it OK if I ask? Is there a reason for this or not?Assume you have a method that needs an object of the superclass as an argument. In this situation, you should provide it with a subclass object rather than a superclass object. Is it appropriate? Why do you believe that?
- You have a method that expects an object from the superclass to be supplied as a parameter. If you offer it a subclass rather than a superclass object, it will work. Is it permitted? What's the point?You have a method that requires an argument that is an instance of the superclass, and it expects you to provide it. It will function properly if you provide it with an object of a subclass rather than a superclass. Is it even possible? Where is the value in that?Java Question - Using the bottom code, create another class named "DigitalBook" as a subclass of the given "Book" class. Then, Make sure that the "DigitalBook" class contains two constructors: (1) one is the default constructor that takes no parameter, and (2) the other is a parameterized constructor that take 6 parameters. Be sure to use the “super” keyword in the constructors of the "DigitalBook" class. In the “main()” method of the “EX12_1” class, create four instances: “b1”, “b2”, d1”, and “d2”. Let “b1” and “b2” be the instances of the “Book” class, and let the “d1” and “d2” be the instance of the “DigitalBook” class. Be sure to use the specified constructor (as shown in attached picture) to initialize these instances. The Final Output is shown in the attached pictures. Please make sure that no errors show up in the Java Compiler when testing the code. Thank you. Add the following code to the "class Book" code (Below the ___ line). public class EX12_1{public static void…
- Java Question - Using the bottom code, create another class named "DigitalBook" as a subclass of the given "Book" class. Then, Make sure that the "DigitalBook" class contains two constructors: (1) one is the default constructor that takes no parameter, and (2) the other is a parameterized constructor that take 6 parameters. Be sure to use the “super” keyword in the constructors of the "DigitalBook" class. In the “main()” method of the “EX12_1” class, create four instances: “b1”, “b2”, d1”, and “d2”. Let “b1” and “b2” be the instances of the “Book” class, and let the “d1” and “d2” be the instance of the “DigitalBook” class. Be sure to use the specified constructor (as shown in attached picture) to initialize these instances. The Final Output is shown in the attached pictures. Add the following code to the "class Book" code (Below the ___ line). public class EX12_1{public static void main(String[] args){/////add your code here}}…Answer with True or False for the following. Explain your answers.-It is legal to write a method in a class which overloads another method declared in the same.-It is legal to write a method in a superclass which overrides a method declared in a sub-class.You have a method which requires an argument of type superclass. It will function if you supply a subclass object rather than a superclass object. Is it permissible? What is the purpose?
- You have a method that takes an argument of type superclass object. You may make it function by providing an object of a subclass rather than a superclass. Is that allowed? I don't see the purpose.(Java) Which tag is used to indicate that a method is overriden from a parent class?2-Create a class named 'Shape' with a method to print "This is This is shape".Then create two other classes named 'Rectangle', 'Circle' inheriting the Shapeclass, both having a method to print "This is rectangular shape" and "This iscircular shape" respectively. Create a subclass 'Square' of 'Rectangle' having amethod to print "Square is a rectangle". Now call the method of 'Shape' and'Rectangle' class by the object of 'Square' class.