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 false

//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

Question:   Mr. Hamza is working as an accountant in the Octal Company. He wants to calculate salary of his company employees. Develop a java program to calculate salary using the concept of abstract based on the following instructions. Save the project/file as AccountantYourID.                            A) Abstract Class name: YourFirstName_Octal        Abstract Member Method: –   to calculate and return salary    salary()  B) Class name:  Employee extends YourFirstName_Octal       Member variables:  wage, noOfDays, bonus       Member Method : –   parameterized constructor to initialize  member variables –   to calculate and return salary    salary = (wage3 * noOfDays) / 4 + bonus  C) Controlling class :   –   To create an object of Employee –   To print  salary of the Employee –  To print bonus of Employee

1). Write a java abstract class called Solid and you will derive two classes – Cylinder and Sphere – from Solid. The class Solid Member variables type whose data type is String. For example, the type could be sphere, cube, parallelepiped. 2). The methods should include: A default or null constructor A constructor that initializes the value of type Getters and Setters An abstract method to find volume whose signature is public abstract double findVolume(); An abstract method to find surface area whose signature is public abstract double findSurfaceArea() a toString method that returns a string like the following Solid Type: Sphere an equals method that returns true if two Solid objects have the same type and false otherwise. 3). The class Cylinder - Cylinder will extend Solid Member variables: Cylinder inherits type from Solid radius of type double height of type double  Methods: a default or null constructor a constructor that initializes type, radius, and height. type will always…

No written by hand solution Must be coded in Java.

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