Question

JAVA HELP

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 then, Write one or more constructors and the appropriate accessor and mutator methods for the class. Next, write a class named ProductionWorker that extends the Employee class. The ProductionWorker class should have fields to hold the following information: Shift (an integer) Hourly pay rate (a double) 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. Added specs: All constructors should initialize all class fields all methods and properties are commented the only print method permitted is printf

Answer 1

public class Employee {
  
   //class member variables
   String empName;
   String empNumber;
   String hireDate;
  
   //getters and setters
   public String getEmpName() {
       return empName;
   }
   public void setEmpName(String empName) {
       this.empName = empName;
   }
   public String getEmpNumber() {
       return empNumber;
   }
   public void setEmpNumber(String empNumber) {
       this.empNumber = empNumber;
   }
   public String getHireDate() {
       return hireDate;
   }
   public void setHireDate(String hireDate) {
       this.hireDate = hireDate;
   }
  
   //default constructor
   public Employee() {
       setEmpName("NO NAME PROVIDED");
       setEmpNumber("NO EMP NUMBER PROVIDED");
       setHireDate("NO HIRE DATE PROVIDED");
   }
  
   //paramterized constructor
   public Employee(String empName, String empNumber, String hireDate) {
       setEmpName(empName);
       setEmpNumber(empNumber);
       setHireDate(hireDate);
   }
}

public class ProductionWorker extends Employee{
  
   //class member variables

   int shift;
   double hourlyPay;
  
   //getters and setters
   public int getShift() {
       return shift;
   }
   public void setShift(int shift) {
       this.shift = shift;
   }
   public double getHourlyPay() {
       return hourlyPay;
   }
   public void setHourlyPay(double hourlyPay) {
       this.hourlyPay = hourlyPay;
   }
  
  
   //default constructor
   public ProductionWorker(){
       super();
       setHourlyPay(0);
       setShift(0);
   }
  
   //paramterized constructor
   public ProductionWorker(String empName, String empNumber, String hireDate, int shift, double hourlyPay) {
       super(empName, empNumber, hireDate);
       setShift(shift);
       setHourlyPay(hourlyPay);
   }
  
   //method toString that returns a string containing info. about the object
   public String toString() {
       String res = "Name: " + getEmpName() + "\n";
       res += "Emp Number: " + getEmpNumber() + "\n";
       res += "Hire Date: " + getHireDate() + "\n";
       if(getShift() == 0) {
           res += "Shift: Morning\n";
       } else {
           res += "Shift: Evening\n";
       }
       res += "Hourly pay: " + getHourlyPay();
      
       return res;
   }
}

public class TestProductionWorker {

   public static void main(String[] args) {
       // TODO Auto-generated method stub
       ProductionWorker pw_default = new ProductionWorker();
       ProductionWorker pw_paramter = new ProductionWorker("Shashank", "123-A", "21-10-2019", 1, 5.6);
      
       System.out.printf("Object using default constructor: \n");
       System.out.printf("%s", pw_default);
      
       System.out.print("\n\nObject using parameterised constructor: \n");
       System.out.printf("%s", pw_paramter);
   }

}

Answer 2

The code provided defines three classes: Employee, ProductionWorker, and TestProductionWorker. Here's a breakdown of the code:

1. The Employee class represents an employee and contains member variables for the employee's name, employee number, and hire date. It has getters and setters for each variable and provides both a default constructor and a parameterized constructor.

2. The ProductionWorker class extends the Employee class, representing a production worker. It introduces additional member variables for the worker's shift (as an integer) and hourly pay (as a double). It also provides getters and setters for these variables, as well as default and parameterized constructors.

3. The TestProductionWorker class is a test class that creates instances of ProductionWorker objects using both the default and parameterized constructors. It then prints the information of the objects using the toString() method overridden in the ProductionWorker class.

To run the code and see the output, you can compile and execute the TestProductionWorker class. It will create two ProductionWorker objects, one using the default constructor and the other using the parameterized constructor, and display their information.

Please note that the code formatting might be disrupted in the text-based interface, so make sure to properly format the code in your IDE or text editor before compiling and executing it.