Question

For task 2, implement the three classes (Person, Student, and Staff) that are described above. Note that classes Staff and Student are derived from the superclass Person -- in other words Staff and Student inherit from Person. Make sure that the subclasses Student and Staff invoke the superclass' constructors and correctly inherit the variables and methods from the superclass Person. Also note that Person is an abstract class.

<abstract> Person -name:String -address:String = “String” +getName():String +getAddress():String +setAddress(address:String):void +setName(name:String):void Staff -school:String -pay:double +Staff(name:String, address:String, pay:double) +getSchool():String +setSchool(school:String):void +getPay():double +setPay(pay:double):void +toString():String

Student -program:String -year:int -fee:double +Student(name:String, address:String, program:String, year:int, fee:double) +getProgram():String +setProgram(program:String):void +getYear():int +setYear(year:int):void +getFee():double +setFee(fee:double):void +toString():String

Answer 1

Note: Could you plz go through this code and let me know if u need any changes in this.Thank You
_________________

// Person.java

public abstract class Person {
   //Declaring instance variables
   private String name;
   private String address = "String";

   // getters and setters
   public String getName() {
       return name;
   }

   public void setName(String name) {
       this.name = name;
   }

   public String getAddress() {
       return address;
   }

   public void setAddress(String address) {
       this.address = address;
   }

}
_____________________

// Student.java

public class Student extends Person {

   //Declaring instance variables
   private String program;
   private int year;
   private double fee;

   //Parameterized constructor
   public Student(String name, String address, String program, int year,
           double fee) {
       setName(name);
       setAddress(address);
       this.program = program;
       this.year = year;
       this.fee = fee;
   }

   // getters and setters
   public String getProgram() {
       return program;
   }

   public void setProgram(String program) {
       this.program = program;
   }

   public int getYear() {
       return year;
   }

   public void setYear(int year) {
       this.year = year;
   }

   public double getFee() {
       return fee;
   }

   public void setFee(double fee) {
       this.fee = fee;
   }

   //toString method is used to display the contents of an object inside it
   @Override
   public String toString() {
       return "Student [Name = " + getName() + ", Address =" + getAddress()
               + ", Program=" + program + ", Year=" + year + ", Fee=" + fee
               + "]";
   }

}
__________________________

// Staff.java

public class Staff extends Person {
   //Declaring instance variables
   private String school;
   private double pay;

   //Parameterized constructor
   public Staff(String name, String address, String school, double pay) {
       setName(name);
       setAddress(address);
       this.school = school;
       this.pay = pay;
   }

   // getters and setters
   public String getSchool() {
       return school;
   }

   public void setSchool(String school) {
       this.school = school;
   }

   public double getPay() {
       return pay;
   }

   public void setPay(double pay) {
       this.pay = pay;
   }

   //toString method is used to display the contents of an object inside it
   @Override
   public String toString() {
       return "Staff [Name = " + getName() + ", Address =" + getAddress()
               + ", School=" + school + ", Pay=" + pay + "]";
   }

  
}
__________________________

// Test.java

public class Test {

   public static void main(String[] args) {
Staff s=new Staff("Williams","12,Church Street,Mumbai","Little Flower",54000);
Student st=new Student("Ben","23,Lake View Street,Calcutta","Self Learning", 2018,34000);
System.out.println(s);
System.out.println(st);
  

   }

}
___________________________

Output:

Staff [Name = Williams, Address =12,Church Street,Mumbai, School=Little Flower, Pay=54000.0]
Student [Name = Ben, Address =23,Lake View Street,Calcutta, Program=Self Learning, Year=2018, Fee=34000.0]

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