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- Write in java code: a) Write class Vehicle that is superclass and abstract write only one line in the class declaration(first line):b) Class Vehicle is a superclass that contains three non-abstract methods (three methods that are concrete, implemented in the class Vehicle); then class Vehicle cannot be abstract; T/F?c) The first step in problem-solving process is the Requirement Analysis ; T/F?d) Write the method salary1() that is abstract with two parameters (integer and double):e) The final method is a method in the super class that cannot be overridden in its subclasses; T/F?An instance of an abstract class is made by using the keyword 'new'. true or falseWrite a java program in which Animal:Create a class Animal and Add a protected data member named id of integer type.• Add get/set methods for id data member in Animal class with public access. Also provide default constructor this should initialize id to 0.• Also provide parameterized constructor and toString method.• Add an abstract method tellAboutSelf method to Animal class with public access• Add another abstract method speak method to Animal class.Reptile, Bird, MammalNext create the three child classes which extends form Animal class.• Add a default constructor to each of the above created class. The constructor should initialize the id data member id, Reptile, Bird and Mammal, to 1, 2 and 3 respectively also it display a message “(class Name)’s default constructor”. E.g. for Bird it says “Bird’s default constructor”.• Add a parameterized constructor to each of the above created class. The constructor should initialize the id data member, Reptile, Bird and Mammal, to the…
- Using C# - The following is an abstract class, which declares an abstract method named startEngine. Create a subclass of class Vehicle named Car that overrides the method startEngine by displaying the message: “Starting my car…." using Console methods.public abstract class Vehicle{ public abstract bool startEngine(); } Please provide code output screenshotTrue or False, An abstract class must have at least one abstract method.Modify the given codes to remove the compilation errors. 1. public interface Carnivore { int pieces = 10; public static void eatGrass(); public int chew() { return 13; } } 2. Interface HasWings { public int getNumberOfWings(); } abstract class Insect implements HasWings { abstract int getNumberOfLegs(); } public class Dragonfly extends Insect { int getNumberOfLegs() { return 6; } }
- True or False ___(1) An abstract class can have fields. ___(2) You can create an object from an abstract class _ _(3) An abstract class can have both abstract methods and methods that have method bodyOverriding a method such as toString(), equals() methods etc in a user defined classWrite Java classes to solve the following problem: A company has two types of employees. These are called Exempt and NonExempt. Exempt means the employee is not eligible for overtime pay and is paid a fixed amount each pay period. NonExempt means the employee is paid by the hour and receives 1.5 times the hourly rate for hours worked over 40. Each Employee has an id number which is a string. They also have a name. Employee should be an abstract class with the member variables described in number 2. Employee should have an abstract method called findPay, a toString method, and it should implement the Comparable interface. Use alphabetical order of id number to determine less than, greater than, and equal to. The toString method should produce a string like the following: Emp: ID: 4590 Emp Name: Fred Jones Employee should have an equals method. Define two employees to be equal if they have the same name and the same id number. Provide accessor and mutators for Employee. NonExempt should…
- language: Java Class Inheritance with an abstract class Define a class Employee with the following fields: _name, _empId, _department, _position (_title), _yearlySalary, _fullTime (a boolean: true/false) , _month , _year (time of hire) Add constructor and properties Define an abstract method GetBiMonthlySalary() (if the employee is paid twice a month) Define an abstract method GetVacationTime() that returns the number of vacation time this employee would have based on time of hire Override the ToString() method to return a string that contains the information pertaining to an employee such as name, empId, department, and where full time or not. Define a class HourlyEmployee that inherits from Employee. This class should have 2 fields of its own: _hours (hours worked in half a month) and _wage (hourly wage) Provide necessary constructor, properties and methods Override the ToString() to also return the additional fields Gets 3 days of vacation after first year if the…Write a class named Person with data attributes for a person’s name, address, and telephone number. Next, write a class named Customer that is a subclass of the Person class. The Customer class should have a data attribute for a customer number and a Boolean data attribute indicating whether the customer wishes to be on a mailing list. Demonstratean instance of the Customer class in a simple program.PLZ help with the following IN JAVA When defining an inner class to be a helper class for an outer class, the inner classes access should be marked as: Public Private Protected Package access