Needs help in editing

Hi guys: Can any one please help me how to i do the changes in my program according to the following 4 changes.

1) Create a Date type birth data instance field in the Employee class, not a String

2) Enlarge the constructors for the Employee class and subclasses to pass the int month, int day, and int year of the birth date as input by the user to PayrollSystemTest

to the subclass constructor, and then to the Employee class constructor

3) Input from the user for the 5 specific employees and then comment out the hardcoding for the 4 employees in the original code

4) Report monthly salary amounts and include the November birthday bonus

import java.util.ArrayList;
import java.util.Date;
import java.util.Scanner;

public class Employee {

String socialSecurity;
    String birthDate;

public Employee(String socialSecurity, String birthDate){
        this.birthDate = birthDate;
        this.socialSecurity = socialSecurity;
    }

public String getSocialSecurity(){
        return socialSecurity;
    }

public String getBirthDate(){
        return birthDate;
    }

public String toString(){
        return ("Employee:  Social security " + socialSecurity 
+ " date of birth " + birthDate);
    }

public static void main(String[] args) {
        
       Scanner keyboard = new Scanner(System.in);
        System.out.println("Enter employees one by one");
        ArrayList<Employee> ar = new ArrayList<Employee>();

while(true){
            System.out.println(" Employee types available:");
              System.out.println("");
            System.out.println("1-Salaried Employee");
            System.out.println("2-Hourly Employee");
            System.out.println("3-Commission Employee");
            System.out.println("4-Based Salary Commission 
Employee");
            System.out.println("");
              System.out.println("Enter employee type (1-4) . 
Finish list with type 0: ");
            
                     String typeString = keyboard.next();
          //  boolean goodInput = true;
            int type = -1;
              try{
                  type = Integer.parseInt(typeString);
              } catch(Exception ex){

}

if(type <0 || type > 4){
                System.out.println("Invalid type. Please, try 
again. ");
                continue;
            }

if(type == 0)break;

System.out.println("Enter social security: ");
            String social = keyboard.next();
             System.out.println("Enter date of birth: ");
               String birth = keyboard.next();

boolean  goodInput = true;
            switch(type){
                case 1:
                    System.out.println("Enter salary: ");
                     String salString = keyboard.next();
                    double salary = -1.0;
                    try{
                        salary = 
Double.parseDouble(salString);
                    } catch(Exception ex){

}
                    if(salary < 0){
                        System.out.println("Invalid input. Try 
again");
                        goodInput = false;
                        break;
                    }
                    SalariedEmployee emp = new 
SalariedEmployee(social, birth, salary);
                    ar.add(emp);
                    break;

case 2:
                       System.out.println("Enter hourly wage: 
");
                        String hourlyString = keyboard.next();
                    System.out.println("Enter hours worked: 
");
                                  String hoursString = 
keyboard.next();
                             double hourlyWage = -1.0;
                            double hoursWorked = -1.0;
                           try{
                        hourlyWage = 
Double.parseDouble(hourlyString );
                         hoursWorked = 
Double.parseDouble(hoursString );
                    } catch(Exception ex){

}

if(hourlyWage < 0.0 || hoursWorked < 0.0){
                        System.out.println("Invalid input. Try 
again");
                        goodInput = false;
                        break;
                    }
                     HourlyEmployee emp1 = new 
HourlyEmployee(social, birth, hourlyWage, hoursWorked);
                    ar.add(emp1);
                    break;

case 3:
                                    System.out.println("Enter 
commission rate: ");
                        String commissionString = 
keyboard.next();
                    System.out.println("Enter gross sales: ");
                                  String salesString = 
keyboard.next();
                             double commissionRate = -1.0;
                            double grossSales = -1.0;
                           try{
                        commissionRate = 
Double.parseDouble(commissionString );
                         grossSales = 
Double.parseDouble(salesString );
                    } catch(Exception ex){

}

if(commissionRate < 0.0 || grossSales < 
0.0){
                        System.out.println("Invalid input. Try 
again");
                        goodInput = false;
                        break;
                    }
                     CommissionEmployee emp2 = new 
CommissionEmployee(social, birth, commissionRate, grossSales);
                    ar.add(emp2);
                    break;

case 4:
                                   System.out.println("Enter 
commission rate: ");
                        commissionString = keyboard.next();
                    System.out.println("Enter gross sales: ");
                                   salesString = 
keyboard.next();
                        System.out.println("Enter salary: ");
                      salString = keyboard.next();
                        commissionRate = -1.0;
                             grossSales = -1.0;
                      salary = -1.0;
                                try{
                        commissionRate = 
Double.parseDouble(commissionString );
                         grossSales = 
Double.parseDouble(salesString );
                                      salary = 
Double.parseDouble(salString );
                    } catch(Exception ex){

}
                         if(commissionRate < 0.0 || grossSales 
< 0.0 || salary < 0){
                        System.out.println("Invalid input. Try 
again");
                        goodInput = false;
                        break;
                    }

SalaryBasedCommissionEmployee emp3 = new 
SalaryBasedCommissionEmployee(social, birth, commissionRate, 
grossSales, salary);
                             ar.add(emp3);
            }

}

for (int i = 0; i < ar.size(); i++) {
            Employee employee =  ar.get(i);
                System.out.println(employee);
        }

}

class  SalariedEmployee extends Employee{
    double salary;

public SalariedEmployee(String socialSecurity, String 
birthDate, double salary){
        super(socialSecurity, birthDate);
        this.salary = salary;

}

public double getSalary(){
        return salary;
    }

public String toString(){
        return ("Salaried Employee:  Social security " + 
socialSecurity + " date of birth " + birthDate + " salary " + 
salary);
    }

}

class HourlyEmployee extends Employee {
    double hourlyWage;
    double hoursWorked;
    
     public HourlyEmployee(String socialSecurity, String 
birthDate, double hourlyWage, double hoursWorked){
         super(socialSecurity, birthDate);
         this.hourlyWage = hourlyWage;
         this.hoursWorked = hoursWorked;

}

public String toString(){
        return ("Hourly Employee:  Social security " + 
socialSecurity + " date of birth " + birthDate + " hourlyWage 
" + hourlyWage + " hoursWorked " + hoursWorked);
    }

}

class CommissionEmployee extends Employee {
    double grossSales;
    double commissionRate;

public CommissionEmployee(String socialSecurity, String 
birthDate, double grossSales, double commissionRate){
         super(socialSecurity, birthDate);
         this.grossSales = grossSales;
         this.commissionRate = commissionRate;

}

public String toString(){
      return ("Commission Employee:  Social security " + 
socialSecurity + " date of birth " + birthDate + " Commission 
Rate " + commissionRate + " Gross Sales " + grossSales);
    }

}

class SalaryBasedCommissionEmployee extends CommissionEmployee 
{
    double salary;

public  SalaryBasedCommissionEmployee(String 
socialSecurity, String birthDate, double grossSales, double 
commissionRate, double salary){
         super(socialSecurity, birthDate, grossSales, 
commissionRate);
         this.salary = salary;

}

public String toString(){
      return ("Salary Based Commission Employee:  Social 
security " + socialSecurity + " date of birth " + birthDate + 
" Commission Rate " + commissionRate
              + " Gross Sales " + grossSales + " Salary " + 
salary);
    }

}

Make an effort and then come back when you run into problems.

You cannot pass data to a subclass anything. What it means is you are extending the class, and in the extended class (the subclass) you take day month year as parameters. In fact I think it would be better to put the date fields in the superclass (all Employess have a date of birth) and use
super(day, month, year, name, etc); in the subclass constructor.

... and welcome to the Ranch