How do you write the code in Java for class named EmployeeManagerFileImpl implements EmployeeManager ?

I also need to write a Test Harness that Tests the program

/** * */ class named EmployeeManagerFileImpl implements EmployeeManager {

EmployeeManagerFileImpl should use a CSV File to store and read the data. method: createEmployee Should meet the requirements of the Interface update the Employee.Id to have the index value add the Employee to the file. method: updateEmployee Should meet the requirements of the Interface update the employee in the File method: readEmployee Should meet the requirements of the Interface method: readAllEmployees Should meet the requirements of the Interface A method deleteEmployee Should meet the requirements of the Interface

} /** Create a TestHarness

Test Harness Example

Create a TestHarness Simar to the example in Figure 6.7.1

Use the same format at the Test Program in EmployeeManager Interface Part 1.

This time Test both the EmployeeManagerArrayListImpl and EmployeeManagerFileImpl

After each statement there should be a statement that verifies the change

Example:

Write a test program that creates an Employee -- firstName: John, lastName: Wayne, payPerHour: 100.0, EmployeeType: CONTRACTOR Call the EmployeeManager.createEmployee

Employee employeeFile = new Employee(0,"John", "Wayne", 100.0, EmployeeType.CONTRACTOR)); Employee employeeArrayList = new Employee(0,"John", "Wayne", 100.0, EmployeeType.CONTRACTOR)); EmployeeManager employeeManagerArrayList = new EmployeeManagerArrayListImpl(); EmployeeManager employeeManagerFile = new EmployeeManagerFile(); employeeManagerFile.createEmployee(employeeFile); employeeFile = employeeManagerFile.readEmployee(1); System.out.printf("%s, expecting 1, got %s ",1 == employeeFile.getId(), employeeFile.getId()); System.out.printf("%s, expecting John, got %s ","John".equals(employeeFile.getFirstName()), employeeFile.getFirstName()); System.out.printf("%s, expecting Wayne, got %s ","Wayne".equals(employeeFile.getLastName()), employeeFile.getLastName()); System.out.printf("%s, expecting 100, got %s ",100 == employeeFile.getPayPerHour(), employeeFile.getPayPerHour()); System.out.printf("%s, expecting CONTRACTOR, got %s ", EmployeeType.CONTRACTOR.equals(employeeFile.getEmployeeType()), employeeFile.getEmployeeType()); employeeManagerArrayList.createEmployee(employeeArrayList); employeeArrayList = employeeManagerArrayList.readEmployee(1); System.out.printf("%s, expecting 1, got %s ",1 == employeeArrayList.getId(), employeeArrayList.getId()); System.out.printf("%s, expecting John, got %s ","John".equals(employeeArrayList.getFirstName()), employeeArrayList.getFirstName()); System.out.printf("%s, expecting Wayne, got %s ","Wayne".equals(employeeArrayList.getLastName()), employeeArrayList.getLastName()); System.out.printf("%s, expecting 100, got %s ",100 == employeeArrayList.getPayPerHour(), employeeArrayList.getPayPerHour()); System.out.printf("%s, expecting CONTRACTOR, got %s ", EmployeeType.CONTRACTOR.equals(employeeArrayList.getEmployeeType()), employeeArrayList.getEmployeeType());

//Employee.java

package examplesweek2; /** * * @author * */

public class Employee { private int id; private double paymentPerHour; private String firstName; private String lastName; private EmployeeType employeeType;

//Constructor Employee for all private fields public Employee(int id, double paymentPerHour, String firstName, String lastName, EmployeeType employeeType) { super(); this.id = id; this.paymentPerHour = paymentPerHour; this.firstName = firstName; this.lastName = lastName; this.employeeType = employeeType; }

public int getId() { return id; } public void setId(int id) { this.id = id; }

public double getPaymentPerHour() { return paymentPerHour; }

public void setPaymentPerHour(double paymentPerHour) { this.paymentPerHour = paymentPerHour; }

public String getFirstName() { return firstName; }

public void setFirstName(String firstName) { this.firstName = firstName; }

public String getLastName() { return lastName; }

public void setLastName(String lastName) { this.lastName = lastName; }

public EmployeeType getEmployeeType() { return employeeType; }

public void setEmployeeType(EmployeeType employeeType) { this.employeeType = employeeType; }

public double calculateWeeklySalary() { return paymentPerHour * 40; }

@Override public String toString() { return "Employee [id=" + id + ", paymentPerHour=" + paymentPerHour + ", firstName=" + firstName + ", lastName=" + lastName + ", employeeType=" + employeeType + "]"; } //EmployeeManager.java

package examplesweek2;

import java.util.List; /** * * @author * */

//EmployeeManagerArrayListImpl.java

package examplesweek2;

import java.util.ArrayList; import java.util.List; /** * * @author * */

public class EmployeeManagerArrayListImpl implements EmployeeManager {

/** EmployeeManagerArrayListImpl should use an ArrayList to store the data method: createEmployee Should meet the requirements of the Interface add the Employee to the ArrayList. update the Employee.Id to have the index value in the ArrayList method: updateEmployee Should meet the requirements of the Interface update the employee in the ArrayList method: readEmployee Should meet the requirements of the Interface method: readAllEmployees Should meet the requirements of the Interface A method deleteEmployee Should meet the requirements of the Interface */ private List employeeList = new ArrayList<>(); int indexCounter = 0; //update the Employee.Id to have index value in ArrayList /** method: createEmployee Should meet the requirements of the Interface add the Employee to the ArrayList. update the Employee.Id to have the index value in the ArrayList */ public Employee createEmployee(Employee employee) { if(employee.getId() != 0) { System.out.println("To add an Employee the Id must be zero"); return null; } indexCounter++; employee.setId(indexCounter); employeeList.add(employee); //to ArrayList //update Employee.Id to have index value in ArrayList return null; }

public Employee updateEmployee(Employee employee) { //update Employee in ArrayList if(employee.getId() == 0) { System.out.println("To add an Employee the Id must not be zero");; return null; } for (int i = 0; i < employeeList.size(); i++) { Employee emp = employeeList.get(i); if (employee.getId() == emp.getId()) { employeeList.set(i, employee); } } return employee; } @Override public Employee readEmployee(int employeeId) { for (int i = 0; i < employeeList.size(); i++) { Employee emp = employeeList.get(i); if (employeeId == emp.getId()) { return emp; } } return null; } public List readAllEmployees() { return employeeList; }

public void deleteEmployee(int employeeid) { Employee employee = readEmployee(employeeid); employeeList.remove(employee); } }

public interface EmployeeManager {

public Employee createEmployee(Employee employee); public Employee updateEmployee(Employee employee); public Employee readEmployee(int id); public List readAllEmployees(); public void deleteEmployee(int employeeId);

}

// EmployeeType.java

package examplesweek2; /** * * @author * */

public enum EmployeeType {

//2 values CONTRACTOR, FULL_TIME CONTRACTOR, FULL_TIME }

//Employee Test Program

package inclass.week.two;

import java.util.List;

public class EmployeeTestProgram {

public static void main(String[] args) { Employee employee = new Employee(0, 100, "John", "Wayne", EmployeeType.CONTRACTOR); EmployeeManager employeeManager = new EmployeeManagerArrayListImpl(); employeeManager.createEmployee(employee); Employee readEmployee = employeeManager.readEmployee(employee.getId()); printEmployee(readEmployee); Employee nullEmployee = employeeManager.readEmployee(2); if (nullEmployee == null) { System.out.println("Employee.id 2: not found"); } readEmployee.setFirstName("Bruce"); readEmployee.setPaymentPerHour(200.0); readEmployee.setEmployeeType(EmployeeType.FULL_TIME); Employee updatedEmployee = employeeManager.updateEmployee(readEmployee); printEmployee(updatedEmployee); Employee employee2 = new Employee(0, 1000.0, "Selina", "Kyle", EmployeeType.CONTRACTOR); employeeManager.createEmployee(employee2); List employeeList = employeeManager.readAllEmployees(); System.out.println(employeeList); employeeManager.deleteEmployee(employee.getId()); List employeeList2 = employeeManager.readAllEmployees(); System.out.println(employeeList2); } public static void printEmployee(Employee readEmployee) { System.out.println("Employee.id " + readEmployee.getId() + ": " + readEmployee.getFirstName() + " " + readEmployee.getLastName() + ", $" + readEmployee.getPaymentPerHour() + ", " + readEmployee.getEmployeeType() + " was found"); }

}