Question

Java Programming

Design a class named Person and its two subclasses named Student and Employee. A person has a name, address, phone number, and email address. A student has a class status (freshman, sophomore, junior, or senior). Define the status as a constant. An employee has an office, salary, date hired. Define a class named MyDate that contains the fields year, month, and day.

Override the toString method in each class to display the class name and the person's name.
Draw the UML diagram for classes and implement them. Write a test program that creates a Person, Student and Employee and invokes their toString() methods.

Note: Please do the simple solution so that it is easy to understand.

Answer 1

import java.util.*;

class Person
{
    private String name;
    private String address;
    private String phoneNumber;
    private String email;
  
    public Person(String name,String address,String phoneNumber,String email)//constructor
    {
        this.name = name;
        this.address = address;
        this.phoneNumber = phoneNumber;
        this.email = email;
    }
    //get Methods
    public String getName()
    {
        return name;
    }
    public String getAddress()
    {
        return address;
    }
    public String getPhoneNumber()
    {
        return phoneNumber;
    }
    public String getEmail()
    {
        return email;
    }
  
}
class Student extends Person
{
    private static String status;
  
    public Student(String name,String address,String phoneNumber,String email,String status)
    {
        super(name,address,phoneNumber,email);
        this.status = status;
      
    }
  
    public String toString()
    {
      
        return "\nName : "+getName()+ " Address : "+getAddress() +" Phone Number : "+getPhoneNumber()+" Email : "+ getEmail()+" Status :"+status;
    }

  
}

class MyDate
{
    private int year;
    private int month;
    private int day;
  
    public MyDate(int day,int month,int year)
    {
        this.day = day;
        this.month = month;
        this.year = year;
    }
   public String toString()
   {
       return " "+day+"/"+month+"/"+year;
   }
}

class Employee extends Person
{
    private String office;
    private double salary;
    private MyDate dateHired;//MyDate object
  
    public Employee(String name,String address,String phoneNumber,String email,String office,double salary,MyDate dateHired)
    {
        super(name,address,phoneNumber,email);
        this.office = office;
        this.salary = salary;
        this.dateHired = dateHired;
    }
    public String toString()
    {
        return "\nName : "+getName()+ " Address : "+getAddress() +" Phone Number : "+getPhoneNumber()+" Email : "+ getEmail()+" Office : "+office +" Salary : "+salary + " Hiredate : "+dateHired;
    }
  
}

class Test
{
   public static void main (String[] args)
   {
       Student s = new Student("Jim Lee","445- DownStreet,London","446-676686","[email protected]","sophomore");
      
       System.out.println(s.toString());
      
       MyDate d = new MyDate(5,12,2016);
      
       Employee e = new Employee("kathy Williams","7676-Hillside,NJ","3636-575775","[email protected]","6756,street -2,NJ",7666.67,d);
      
       System.out.println(e.toString());
   }
}

Output:

                                                                                                                                         

Name : Jim Lee  Address : 445- DownStreet,London  Phone Number : 446-676686 Email : [email protected] Status :sophomore                      

                                                                                                                                         

Name : kathy Williams  Address : 7676-Hillside,NJ  Phone Number : 3636-575775 Email : [email protected] Office : 6756,street -2,NJ Salary :

7666.67 Hiredate :   5/12/2016  

Person name -address -phoneNumber -email Date -day -month year +Person( +getName0 +getAddress0 +getPhoneNumber +getEmail0 +Date0 +toString0 Employee -office -salary -hiredate Student -status +Student +toString0 +Employee +toString0