class Person(name:String, age:Int) class Student(name:String,major:String, age:Int) : Person(name,age) Why won't the code compile correctly? The constructor for the superclass is not called correctly. The arguments for a Student do not match those of a Person Person is not open Missing semicolons
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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:
//Language: Kotlin
class Person(name:String, age:Int)
class Student(name:String,major:String, age:Int) : Person(name,age)
Why won't the code compile correctly?
- The constructor for the superclass is not called correctly.
- The arguments for a Student do not match those of a Person
- Person is not open
- Missing semicolons
Step by step
Solved in 2 steps
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- When a method in a subclass overrides a method in superclass, it is still possible to call the overridden method using super keyword. If you write super.func() to call the function func(), it will call the method that was defined in the superclass. You are given a partially completed code in the editor. Modify the code so that the code prints the following text: Hello I am a motorcycle, I am a cycle with an engine. My ancestor is a cycle who is a vehicle with pedals. import java.util.*;import java.io.*; class BiCycle{String define_me(){return "a vehicle with pedals.";}} class MotorCycle extends BiCycle{String define_me(){return "a cycle with an engine.";}MotorCycle(){System.out.println("Hello I am a motorcycle, I am "+ define_me()); //////code hereString temp=define_me(); //Fix this line and code here/////code ends here System.out.println("My ancestor is a cycle who is "+ temp );}}class Solution{public static void main(String []args){MotorCycle M=new MotorCycle();}}Object-Oriented Programming Create a Java program that has the following: Inheritance - Create a superclass and one or more subclasses that inherit properties and methods from the superclass. Polymorphism - Show polymorphism by using method overriding and method overloading. Provide an example of runtime polymorphism by creating objects of the subclasses and calling overridden methods. Encapsulation - Demonstrate the concept of encapsulation by applying access modifiers (private, protected, public) appropriately in your program. Abstraction - Utilize abstract classes and methods in your program to illustrate abstraction. Show examples of the following words: super, this, static, final (NO USE OF AI)This task helps you understand how constructors work in inheritance Create a superclass, called SuperClass. Create a constructor for it. Inside the constructor, let it print “this is super class.” Create a childclass of SuperClass, called ChildClass. Create a constructor for it. Inside the constructor, let it print “this is child class.” Create a main function and create a new object for ChildClass. Observe what’s printed in console. What will happen if you have a default constructor without parameters in addition to the one with parameters?
- Write a Java class Person for dealing with persons. Your class must have the following features: Person id: long name: String gender: String + Person() + Person (id: long, name: String, gender: String) + Create setter and getter for all data fields. + Override toString() method: you have to return required data Fields values. Constructor: public Person(): A default constructor, should initialize the data fields to their default values. public Person (SSN: long, name: String, gender: String): A constructor with parameters, that creates the person object by setting specified parameters. Instance methods: public void setName(name: String): Used to set the full name of the person. public void setGender(gender: String): Used to set the gender of the person. public long getId(): This method returns the id of the person. public String getGender(): This method returns the gender of the person. public String getName(): This method returns the full name of the person. public String…Please write in Python with comments 2. ShiftSupervisor ClassIn a particular factory, a shift supervisor is a salaried employee who supervises a shift. In addition to a salary, the shift supervisor earns a yearly bonus when his or her shift meets production goals. Write a ShiftSupervisor class that is a subclass of the Employee class you created in Programming Exercise 1. The ShiftSupervisor class should keep a data attribute for the annual salary, and a data attribute for the annual production bonus that a shift supervisor has earned. Demonstrate the class by writing a program that uses a ShiftSupervisor object.Code a subclass named ExpressCard that inherits from the superclass CreditCard, which has two private data members: foreignFeeRate of double type, and domesticBonusMileageRate of double type Provide: default constructor with no parameters, constructor with all parameters to initialize its own private data and the inherited data from CreditCard getter/setter methods for each data member There are two effector methods: Method calcFee() takes no parameters and it returns double type. This method calculates the transaction fee. First you need to call the method in superclass to obtain the basic fee, and then for ExpressCard user, there is an extra charge for foreign spending. Given the same example above as in class CreditCard, the basic fee is $3, and under a foreignFeeRate of 3%, then the extra fee is calculated by multiplying $50 of foreign spending with 3% (0.03) of foreignFeeRate, which yields $50 *0.03 = $1.5, so the total fee is $3 + $1.5 = $4.5. Method calcMileage() takes no…
- Write a class named Vehicle with vehicleType, manufactureYear(int) and cost(double) as private data fields. [Hint: VehcleType could be "truck", "4WD", "Bus"] . Add a constructor with any two parameters of the superclass. Write a class named Car which inherits the Vehicle class. Add a non-static private string variable called companyName. Add a constructor in the subclass and a toString() method that prints the Car's data fields in the order VehicleType, manufactureYear, companyName [Hint: Add a toString( ) method in the superclass as well]. Create objects of Vehicle and Car class. Can the object of Vehicle class be stored in an object of Car Class? If yes, write the code. If No, Explain why? ***Student Instruction *** You need to write the complete code as mentioned below: i) The main class with necessary codes. ii) The subclass with necessary codes.iii) The Test class with necessary codes.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.Programming Launguage = Python 2. ShiftSupervisor Class In a particular factory, a shift supervisor is a salaried employee who supervises a shift. In addition to a salary, the shift supervisor earns a yearly bonus when his or her shift meets production goals. Write a ShiftSupervisor class that is a subclass of the Employee class you created in Programming Exercise 1. The ShiftSupervisor class should keep a data attribute for the annual salary and a data attribute for the annual production bonus that a shift supervisor has earned. Demonstrate the class by writing a program that uses a ShiftSupervisor object. Sample Output Enter the name: John Smith Enter the ID number: 234 Enter the annual salary: 100000 Enter the bonus: 10000 Shift supervisor worker information: Name: John Smith ID number: 234 Annual Salary: $100,000.00 Annual Production Bonus: $10,000.00 Combined Annual Pay: $110,000.00 NOTE: Add new calculation.