Question

Design a class named Employee. The class should keep the following information in fields:

·         Employee name

·         Employee number in the format XXX–L, where each X is a digit within the range 0–9 and the L is a letter within the range A–M.

·         Hire date

Write one or more constructors and the appropriate accessor and mutator methods for the class. Next, write a class named ProductionWorker that inherits from the Employee class. The ProductionWorker class should have fields to hold the following information:

·         Shift (an integer)

·         Hourly pay rate (a double)

·         Add hours and calculate pay

The workday is divided into two shifts: day and night. The shift field will be an integer value representing the shift that the employee works. The day shift is shift 1 and the night shift is shift 2. Write one or more constructors and the appropriate accessor and mutator methods for the class. Demonstrate the classes by writing a program that uses a ProductionWorker object.

Answer 1

Employee.java

public class Employee {

   // Declaring instance variables
   private String employee_name;
   private String employee_no;
   private String hiredate;

   // Default Constructor
   public Employee() {
   }

   // Parameterized Constructor
   public Employee(String employee_name, String employee_no, String hiredate) {
       this.employee_name = employee_name;
       this.employee_no = employee_no;
       this.hiredate = hiredate;
   }

   // Setters and Getters
   public String getEmployee_name() {
       return employee_name;
   }

   public void setEmployee_name(String employee_name) {
       this.employee_name = employee_name;
   }

   public String getEmployee_no() {
       return employee_no;
   }

   public void setEmployee_no(String employee_no) {
       this.employee_no = employee_no;
   }

   public String getHiredate() {
       return hiredate;
   }

   public void setHiredate(String hiredate) {
       this.hiredate = hiredate;
   }

   // toString() method which displays the contents of an Object inside it.
   @Override
   public String toString() {
       System.out.println("Employee Name =" + employee_name);
       System.out.println("Employee No =" + employee_no);
       System.out.println("Hiredate =" + hiredate);
       return "";
   }

}

___________________

ProductionWorker.java

public class ProductionWorker extends Employee {
   // Declaring instance variables
   private double hourly_pay_rate;
   private int shift;
   private int no_of_hours;

   // Default Constructor
   public ProductionWorker() {
       super();
   }

   // Parameterized Constructor
   public ProductionWorker(String employee_name, String employee_no,
           String hiredate, double hourly_pay_rate, int shift) {
       super(employee_name, employee_no, hiredate);
       this.hourly_pay_rate = hourly_pay_rate;
       this.shift = shift;

   }

   // Setters and Getters
   public double getHourly_pay_rate() {
       return hourly_pay_rate;
   }

   public void setHourly_pay_rate(double hourly_pay_rate) {
       this.hourly_pay_rate = hourly_pay_rate;
   }

   public int getShift() {
       return shift;
   }

   public void setShift(int shift) {
       this.shift = shift;
   }
  
   public void addHours(int hours)
   {
       this.no_of_hours+=hours;
   }
  
   public double calculate_Pay()
   {
       return no_of_hours*hourly_pay_rate;
   }

   // toString() method which displays the contents of an Object inside it.
   @Override
   public String toString() {
       super.toString();
       System.out.println("Hourly Pay Rate =" + hourly_pay_rate);
       if(getShift()==1)
       System.out.println("Shift = Day");
       else if(getShift()==2)
       System.out.println("Shift = Night");  
       return "";
   }

}

___________________

Driver.java

public class Driver {

   public static void main(String[] args) {
  
      
   //Creating the Production Worker Object by passing the parameters  
ProductionWorker pw1=new ProductionWorker("Williams","123-B","31-Dec-2014", 10, 1);
  
//Displaying the Production worker details
System.out.println("===== Production Worker Details =====");
pw1.toString();
pw1.addHours(39);
System.out.println("Payment for Production Worker 1:$"+pw1.calculate_Pay());
  
   //Creating the Production Worker Object by passing the parameters  
ProductionWorker pw2=new ProductionWorker("Pitersen","345-H","11-Feb-2006", 15, 2);
  
//Displaying the Production worker details
System.out.println("===== Production Worker Details =====");
pw2.toString();
pw2.addHours(35);
System.out.println("Payment for Production Worker 2: $"+pw2.calculate_Pay());

   }

}

_____________________

Output:

===== Production Worker Details =====
Employee Name =Williams
Employee No =123-B
Hiredate =31-Dec-2014
Hourly Pay Rate =10.0
Shift = Day
Payment for Production Worker 1:$390.0
===== Production Worker Details =====
Employee Name =Pitersen
Employee No =345-H
Hiredate =11-Feb-2006
Hourly Pay Rate =15.0
Shift = Night
Payment for Production Worker 2: $525.0

____________Thank You