Inheritance code returns no value

I created a super class called Employee, with a subclass called ProductionWorker and a driver called ProductionWorkerDriver. The program takes my entered info and returns the String values from the Employee class, but not the double and int values from the ProductionWorker class. The program I'm using said I had to initialize the values of those as 0, and I'm thinking that's why they show up as zero when compiled. However, the program won't compile without that, so I'm not sure what to do.

public class Employee {
    private String name;
    private String employeeNumber;
    private String hireDate;

    public Employee(String n, String num, String date) {
        name = n;
        employeeNumber = num;
        hireDate = date;
    }

    public Employee() {
        name = "";
        employeeNumber = "";
        hireDate = "";
    }

    public void setName(String n) {
        name = n;
    }

    public void setEmployeeNumber(String e) {
        employeeNumber = e;
    }

    public void setHireDate(String h) {
        hireDate = h;
    }

    public String getName() {
        return name;

    }

    public String getEmployeeNumber() {
        return employeeNumber;
    }

    public String getHireDate() {
        return hireDate;
    }

    public String toString() {
        String str = "Employee Name: " + name
                + "\nEmployee #: " + employeeNumber
                + "\nHire Date: " + hireDate;

        return str;

    }
} //end of Employee class


//beginning of ProductionWorker class
import java.text.DecimalFormat;

public class ProductionWorker extends Employee {
    private int shift;
    private double payRate;
    public int DAY_SHIFT = 1;
    public int NIGHT_SHIFT = 2;

    public ProductionWorker(String n, String num, String date, int sh, double rate) {
        super(n, num, date);
        shift = sh;
        payRate = rate;

    }

    public ProductionWorker() {

    }

    public void setShift(int s) {
        shift = s;
    }

    public void setPayRate(double p) {
        payRate = p;
    }

    public int getShift() {
        return shift;
    }

    public double getPayRate() {
        return payRate;
    }

    public String toString() {
        DecimalFormat dollar = new DecimalFormat("#,##0.00");

        String str = super.toString() + "\nShift: " + shift
                + "\nPay Rate: $" + dollar.format(payRate);

        return str;
    }
}//end of ProductionWorker class


//beginning of ProductionWorkerDriver
import java.util.Scanner;

public class ProductionWorkerDriver {
    public static void main(String[] args) {
        Scanner keyboard = new Scanner(System.in);

        String name = null;
        String employeeNumber = null;
        String hireDate = null;
        int shift = 0;
        double payRate = 0;
        int DAY_SHIFT = 1;
        int NIGHT_SHIFT = 2;

        Employee info = new Employee(name, employeeNumber, hireDate);

        System.out.println("Employee Name:");
        name = keyboard.nextLine();

        System.out.println("Employee #:");
        employeeNumber = keyboard.nextLine();

        System.out.println("Hire Date:");
        hireDate = keyboard.nextLine();

        ProductionWorker info2 = new ProductionWorker(name, employeeNumber, hireDate, shift, payRate);

        System.out.println("Shift 1 or 2:");
        shift = keyboard.nextInt();

        System.out.println("Pay Rate:");
        payRate = keyboard.nextDouble();

        System.out.println(info2.toString());

    }

}//end of ProductionWorkerDriver