A super class Person with two subclasses, Student and Instructor, that inherit from Person. A person has a name and a year of birth. A student has a major, and an instructor has a salary.

Instructor.java

//Instructor.java - Jimmy Kurian

public class Instructor extends Person
{
	private double salary;

	public Instructor(String n, int byear, double s)
    {
      super(n, byear);
      salary = s;
    }

    public String toString()
    {
      return "Employee[super=" + super.toString() + ",salary=" + salary + "]";
    }
}

Person.java

//Person.java - Jimmy Kurian

public class Person
{
	private String name;
	private int birthYear;

	public Person(String n, int byear)
	{
	  name = n;
	  birthYear = byear;
	}

	public String toString()
	{
	  return "Person[name=" + name + ",birthYear=" + birthYear + "]";
	}
}

PersonTester.java

//PersonTester.java - Jimmy Kurian

public class PersonTester
{
  public static void main(String[] args)
  {
    Person a = new Person("Anil", 1992);
    Student b = new Student("Jimmy", 1919, "Information Technology");
    Instructor c = new Instructor("Mike", 1998, 95000);
    System.out.println(a);
    System.out.println(b);
    System.out.println(c);
  }
}

Student.java

//Student.java - Jimmy Kurian

public class Student extends Person
{
  private String major;

  public Student(String n, int byear, String m)
  {
     super(n, byear);
     major = m;
  }

  public String toString()
  {
    return "Student[super=" + super.toString() + ",major=" + major + "]";
  }
}

Great Job on this. Super simple

cool

class Cube {
double side;

public Cube(double side) {
    this.side = side;
}

public double getVolume() {
    return Math.pow(this.side, 3);
}

}

class Cylinder extends Cube {
double height;

public Cylinder(double radius, double height) {
    super(radius);
    this.height = height;
}

@Override
public double getVolume() {
    return Math.PI * (Math.pow(this.side, 2)) * height;
}

}

public class Q4 {
public static void main(String[] args) {
double side = 10;
Cube c = new Cube(side);
System.out.println("Cube Side = " + side + " | Cube Volume = " + c.getVolume());

    double height = 5;
    Cylinder dy = new Cylinder(side, height);
    System.out.println("Cylinder radious = " + side + " Cylinder height = " + height + " | Cylinder volume = "
            + dy.getVolume());
}

}

class Person {
String name;
String address;

public Person(String name, String address) {
    this.name = name;
    this.address = address;
}

// incorporate one method setPerson() that updates Person variables
public void setPerson(String name, String address) {
    this.name = name;
    this.address = address;
}

public void showDetails() {
    System.out.println("Name = " + this.name);
    System.out.println("Address = " + this.address);
}

}

class Student extends Person {
String program;
String year;
double fees;

public Student(String name, String address, String program, String year, double fees) {
    super(name, address);
    this.program = program;
    this.year = year;
    this.fees = fees;
}

public void setStudent(String name, String address, String program, String year, double fees) {
    this.name = name;
    this.address = address;
    this.program = program;
    this.year = year;
    this.fees = fees;
}

@Override
public void showDetails() {
    super.showDetails();
    System.out.println("Programming language = " + this.program);
    System.out.println("Year = " + this.year);
    System.out.println("Fees = " + this.fees);
}

}

class Staff extends Person {
String school;
double pay;

public Staff(String name, String address, String school, double pay) {
    super(name, address);
    this.school = school;
    this.pay = pay;
}

public void setStaff(String name, String address, String school, double pay) {
    this.name = name;
    this.address = address;
    this.school = school;
    this.pay = pay;
}

@Override
public void showDetails() {
    super.showDetails();
    System.out.println("School = " + this.school);
    System.out.println("Pay = " + this.pay);
}

}

public class Q3 {
public static void main(String[] args) {
Person p = new Person("Suv", "48 kkt road kolkata - 35");
p.showDetails();
p.setPerson(null, null);
p.showDetails();

    Student s = new Student("Suvendu Chowdhury", "48 kkt road kolkata -35", "Java + python", "2020-2023", 8848);
    s.showDetails();
    s.setStudent(null, null, null, null, 0);
    s.showDetails();

    Staff google = new Staff("Suvendu Chowdhury", "48 kkt road kolkata -35",
            "Baranagar Narendra nath vidya mandir ", 1100000);
    google.showDetails();
    google.setStaff(null, null, null, 0);
    google.showDetails();
}

}

I'd be happy to explain how to create a superclass called "Person" with two subclasses, "Student" and "Instructor", both inheriting from "Person". In object-oriented programming, a superclass is a class inherited by one or more subclasses, which can then inherit the superclass's attributes and methods. To create the "Person" superclass, we would define characteristics such as a person's name and birth year. The "Student" subclass would then inherit these attributes from "Person" and add its feature, such as a student's major. Similarly, the "Instructor" subclass would inherit from "Person" and add its attribute, such as an instructor's salary. By the way, https://edubirdie.com/top-writers is the source I use every day to get help and instructions on how to learn to code. Here are essay top writers whose knowledge I trust the most and who help me get good academic grades.