Question

Implement an abstract class named Person and two subclasses named Student and Staff in Java. A person has a name, address, phone number and e-mail address. A student has a credit hour status (freshman, sophomore, junior, or senior). Define the possible status values using an enum. Staff has an office, salaray, and date-hired. Implement the above classes in Java. Provide Constructors for classes to initialize private variables. Getters and setters should only be provided if needed. Override the toString() method in each class to display the class name and the person's name. Write an application to create objects of type Student and Staff, put them in a SINGLE ArrayLlist, then loop through the ArrayList and print the person's name and the class name of the objects.

Answer 1

Person.java:

public abstract class Person {
   private String name;
   private String address;
   private String phoneNo;
   private String emailID;
   public Person(String name, String address, String phoneNo, String emailID) {
       this.name = name;
       this.address = address;
       this.phoneNo = phoneNo;
       this.emailID = emailID;
   }
   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;
   }
   public String getPhoneNo() {
       return phoneNo;
   }
   public void setPhoneNo(String phoneNo) {
       this.phoneNo = phoneNo;
   }
   public String getEmailID() {
       return emailID;
   }
   public void setEmailID(String emailID) {
       this.emailID = emailID;
   }
   @Override
   public String toString() {
       return " " + name + " " + getClass();
   }

}

Student.java:

public class Student extends Person{

   public Student(String name, String address, String phoneNo, String emailID) {
       super(name, address, phoneNo, emailID);
       // TODO Auto-generated constructor stub
   }
   enum CreditHourStatus
{
       freshman, sophomore, junior, senior;
}
   @Override
   public String toString() {
   return " " + getName() + " " + getClass();
   }
  
}

Staff.java:

import java.util.Date;

public class Staff extends Person{
  
   private String office;
   private int salary;
   private Date dateHired;
   public Staff(String name, String address, String phoneNo, String emailID) {
       super(name, address, phoneNo, emailID);
       // TODO Auto-generated constructor stub
   }
   public String getOffice() {
       return office;
   }
   public void setOffice(String office) {
       this.office = office;
   }
   public int getSalary() {
       return salary;
   }
   public void setSalary(int salary) {
       this.salary = salary;
   }
   public Date getDateHired() {
       return dateHired;
   }
   public void setDateHired(Date dateHired) {
       this.dateHired = dateHired;
   }
   @Override
   public String toString() {
       return " " + getName() + " " + getClass();
}
  
  

  

}

PersonTest.java:

import java.util.ArrayList;

public class PersonTest {

   public static void main(String[] args) {
       // TODO Auto-generated method stub
       Student s=new Student("Ram", "us", "9000100100", "[email protected]");
       Staff s1=new Staff("Rah","ff","932523942","[email protected]");
       ArrayList<Person> arr=new ArrayList<Person>();
       arr.add(s);
       arr.add(s1);
       for (Person i : arr){
           System.out.println(i.toString());
       }
   }

}

output:

Answer 2

Nasra Fresh man shoe phore