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- Inheritance The more general class is typically known as the parent class, super class, or base class. The more specific class is typically known as the child class, sub class, or derived class. The Java keyword extends allows you to indicate that one class should be the child class of the original parent class. The child will then inherit everything from the parent class, including variables and methods. {0} Online (1) Main.java x Student.java public class Main { 1 2 3 4 5 6 Run V 7 8 9 10 11 12 13 14 } public static void main(String[] args) { /* Person class example */ Person teacher = new Person(); teacher.setName("Laurel"); System.out.println(teacher); } Reid Moseley X Person.java x /* Student class example */ Student student = new Student (); student.setName("Alice"); System.out.println(student); CONSOLE SHELL Name: Laurel Name: Alice Reset to Template Open DesktopTrue or False 1) After a user defines his/her own constructor in a Java class, the default constructor is still available. ___(2) Java supports multiple inheritances directly. ___(3) Some methods in an interface can have method body.True or False ___(25) Java’s constructor name is exactly the same as the class name. ___(26) Java allows multiple constructors to be defined within a class. ___(27) is-a relationship is similar to has-a relationship in Java.
- True or False ___(40) When a class is defined without a constructor, Java automatically provides a default constructor.Programming Language = Python 1. Employee and ProductionWorker Classes Write an Employee class that keeps data attributes for the following pieces of information: • Employee name • Employee number Next, write a class named ProductionWorker that is a subclass of the Employee class. The ProductionWorker class should keep data attributes for the following information: • Shift number (an integer, such as 1, 2, or 3) • Hourly pay rate The workday is divided into two shifts: day and night. The shift attribute will hold an integer value representing the shift that the employee works. The day shift is shift 1 and the night shift is shift 2. Write the appropriate accessor and mutator methods for each class. Once you have written the classes, write a program that creates an object of the ProductionWorker class and prompts the user to enter data for each of the object’s data attributes. Store the data in the object and then use the object’s accessor methods to retrieve it and display it on the…The_ keyword is used in a subclass constructor to explicitly control the superclass constructor that must be invoked before the execution of the subclass constructor proceeds. *
- C++ Language Activity 5: DERIVED CLASS • Create a SAVING ACCOUNT class that inherits the class BANK ACCOUNT. • Create a constructor for the derived class that accepts INTEREST RATE. • Create a method that displays the INTEREST RATE. • Create a method that computes the INTEREST (BALANCE * INTEREST RATE) and adds to the current BALANCE.True or False:Unlike other members of a superclass, constructors of a superclass are not inherited by its subclasses. This means that you must define a constructor for a class or use the default constructor added by the compiler.Use Java Programming Language Create a Loan Account Hierarchy consisting of the following classes: LoanAccount, CarLoan, PrimaryMortgage , UnsecuredLoan, and Address. Each class should be in it's own .java file. The LoanAccount class consists of the following properties: principal- the original amount of the loan. annualInterestRate - the annual interest rate for the loan. It is not static as each loan can have it's own interest rate. months - the number of months in the term of the loan, i.e. the length of the loan. and the following methods: a constructor that takes the three properties as parameters. calculateMonthlyPayment() - takes no parameters and calculates the monthly payment using the same formula as Assignment 1. getters for the three property variables. toString() - displays the information about the principle, annualInterestRate, and months as shown in the example output below. The CarLoan class which is a subclass of the LoanAccount class and consists of the…
- Class Activity 1 :: Constructor Write a Java program to calculate salary of an employee in the company. 1. Member variables are: Employee No, Employee_name, Basic salary, Dearness Allowance (DA), House Rent allowance (HRA),and Gross_salary. 2. Member Methods are: • To calculate and return Dearness Allowance (DA) - (DA - 30% of basic salary), • To calculate and return House Rent Allowance (HRA) (35% of basic salary incase the basic salary is > 400, otherwise it is 30% of basic salary), • To calculate and return Gross salary (Basic + DA+ HRA), 3. The program should use the parametrized constructor to initialize the member variables of the class. 4. The program should print the Employee_No, Employee_name, Basicsalary, Dearness, Allowance (DA), House rent allowance (HRA),and Gross_salary. Chapter 7 ITSE203-Object Oriented Programming (Java) Object Oriented Programming (OOP) ConceptsChild Class: Vegetable Write a child class called Vegetable. A vegetable is described by a name, the number of grams of sugar (as a whole number), the number of grams of sodium (as a whole number), and whether or not the vegetable is a starch. Core Class Components For the Vegetable class, write: the complete class header the instance data variables a constructor that sets the instance data variables based on parameters getters and setters; use instance data variables where appropriate a toString method that returns a text representation of a Vegetable object that includes all four characteristics of the vegetableJavaProblem: Employee and ProductionWorker Classes Write a python class named ProductionWorker that is a subclass of the Employee class. The ProductionWorker class should keep data attributes for the following information: • Shift number (an integer, such as 1, 2, or 3)• Hourly pay rateThe workday is divided into two shifts: day and night. The shift attribute will hold an integer value representing the shift that the employee works. The day shift is shift 1 and the night shift is shift 2. Write the appropriate accessor and mutator methods for this class. Once you have written the class, write a program that creates an object of the ProductionWorker class, and prompts the user to enter data for each of the object’s data attributes. Store the data in the object, then use the object’s accessor methods to retrieve it and display it on the screen Note: The program should be written in python. Sample Input/Output: Enter the name: Ahmed Al-AliEnter the ID number: 12345Enter the department:…