Question

You will be writing a multiclass user management system using the java. Create a program that implements a minimum of four classes. The classes must include: 1. Employee Class with the attributes of Employee ID, First Name, Middle Initial, Last Name, Date of Employment. 2. Employee Type Class that has two instances of EmployeeType objects: salaried and hourly. Each object will have methods that calculates employees payrol you may use attributes from Assignment 2), but you must handle the calculation in a method. Assume that you have hourly employees who work overtime and if the hours they worked over 40 hours, they must be paid one-and-one-half times the regular rate of pay for all hours worked over 40 hours. Both federal and state tax must be calculated 3. Address Class that handles address of the employee: attributes include street address, city, state, zip code, 4. Contact Class The Contact class will have email and phone attributes, you may also create an instance of Address object. The above four classes are required, but you can add more if you want to make your program a realistic application of the real world.
write in java and please code the four classes with the requirements instructed

Answer 1

import java.util.ArrayList;

class Employee {
   private String name;
   private String department;
   private String id;
   private Address address;
   private Contact contact;
  

   // Default constructor. Set protected variables to the empty string or 0
   public Employee() {
       name = "";
       department = "";
       id = "";
   }

   // Constructor with parameters to set the private variables
   public Employee(String name, String department, String id,Address a, Contact c) {
       this.name = name;
       this.department = department;
       this.id = id;
       address=a;
       contact=c;
   }

   public String getName() {
       return name;
   }

   public String getDepartment() {
       return department;
   }

   public String getId() {
       return id;
   }

   public void setDepartment(String department) {
       this.department = department;
   }

   public double getWeeklyPay() {
       return 0.0;
   }

   public String toString() {
       return "Name: " + name + ", Department: " + department + ", ID: " + id;
   }
}
class Address{
   private String streetAddress;
   private String city;
   private String state;
   private String pinCode;
   public Address(){}
   public Address(String aStreetAddress, String aCity, String aState, String aPinCode) {
       super();
       streetAddress = aStreetAddress;
       city = aCity;
       state = aState;
       pinCode = aPinCode;
   }
   @Override
   public String toString() {
       return "Address [streetAddress=" + streetAddress + ", city=" + city + ", state=" + state + ", pinCode="
               + pinCode + "]";
   }
   public String getStreetAddress() {
       return streetAddress;
   }
   public void setStreetAddress(String aStreetAddress) {
       streetAddress = aStreetAddress;
   }
   public String getCity() {
       return city;
   }
   public void setCity(String aCity) {
       city = aCity;
   }
   public String getState() {
       return state;
   }
   public void setState(String aState) {
       state = aState;
   }
   public String getPinCode() {
       return pinCode;
   }
   public void setPinCode(String aPinCode) {
       pinCode = aPinCode;
   }
  
}
class Contact{
   private String email;
   private String phone;
   Contact(){
      
   }
   public Contact(String aEmail, String aPhone) {
       super();
       email = aEmail;
       phone = aPhone;
   }
   public String getEmail() {
       return email;
   }
   public void setEmail(String aEmail) {
       email = aEmail;
   }
   public String getPhone() {
       return phone;
   }
   public void setPhone(String aPhone) {
       phone = aPhone;
   }
   @Override
   public String toString() {
       return "Contact [email=" + email + ", phone=" + phone + "]";
   }
  
  
}
class HourlyEmployee extends Employee {

   private double hourlyRate;

   /* FIXME(2) Complete the default constructor to set hourlyRate to 0.0 */

   public HourlyEmployee() {

       super();
       hourlyRate = 0.0;

   }

   /*
   * FIXME(3) Complete the argumented constructor to set each field properly
   *
   * Note that you can call the superclass constructor to initialize the
   * fields defined in the superclass
   *
   * The second video in Canvas shows an example on this.
   */

   public HourlyEmployee(String name, String department,

           String id, double rate,Address a , Contact c) {

       super(name, department, id,a,c);

       setHourlyRate(rate);

   }

   public double getHourlyRate() {

       return hourlyRate;

   }

   public void setHourlyRate(double rate) {

       hourlyRate = (rate < 0.0) ? 0.0 : rate;

   }

   @Override

   public String toString() {

       return "hourly employee: "

               + super.toString()

               + String.format(" hourly wage: $%.2f\n",

                       getHourlyRate());

   }

}

class SalariedEmployee extends Employee {
   private double annualSalary;

   public SalariedEmployee() {
       annualSalary=0;
   }

   public SalariedEmployee(String name, String department, String id, double salary,Address a,Contact c) {
       super(name, department, id,a,c);  
       annualSalary=salary;
   }

   public double getAnnualSalary() {
       return annualSalary;
   }

   public void setAnnualSalary(double salary) {
       this.annualSalary = salary;
   }

   @Override
   public double getWeeklyPay() {
       return annualSalary / 52;
   }

   @Override
   public String toString() {
       return "Name : " + getName() + " Department : " + getDepartment() + " ID : " + getId() + ", Annual Salary : $"
               + getAnnualSalary();
   }

}

public class HumanResource {
   public static void main(String[] args) {
       ArrayList<Employee> employees = new ArrayList<Employee>();

       HourlyEmployee e1 = new HourlyEmployee("John Smith", "Sales", "jsmith1", 18.2,new Address(),new Contact());
       employees.add(e1);
       SalariedEmployee e2 = new SalariedEmployee("Amy Brown", "Marketing", "abrown3", 45000,new Address(),new Contact());
       employees.add(e2);
       SalariedEmployee e3 = new SalariedEmployee("Henry Chuck", "Accounting", "cchuck2", 50000.0,new Address(),new Contact());
       employees.add(e3);
       SalariedEmployee e4 = new SalariedEmployee("Mary Miller", "IT", "mmiller5", 75000,new Address(),new Contact());
       employees.add(e4);

       for (int i = 0; i < employees.size(); i++) {
           System.out.println(employees.get(i).getName() + " $" + employees.get(i).getWeeklyPay());
       }
   }
}