Question

JAVA

(1) Create two files to submit:

• Payroll.java - Class definition
• PayrollClient.java - Contains main() method

Build the Payroll class with the following specifications:

• 4 private fields
  • String name - Initialized in default constructor to "John Doe"
  • int ID - Initialized in default constructor to 9999
  • doulbe payRate - Initialized in default constructor to 15.0
  • doulbe hrWorked - Initialized in default constructor to 40
• 2 constructors (public)
  • Default constructor
  • A constructor that accepts the employee’s name, ID, and pay rate as arguments. These values should be assigned to the object’s name, ID, and payRate fields.
• 7 public member methods (mutators, accessors, and other) (8 pts)
  • getName()
  • getID()
  • setPayRate() & getPayRate()
  • setHrWorked() & getHrWorked()
  • A method named grossPay that returns employee’s gross pay (=hrWorked * payRate)

(2) In main(), create two Payroll objects: one use the info inputted by the user, and the other use the default constructor, and print the info for each employee (2 pts)

Ex:

Enter the name, ID, pay rate, and hours worked of an employee:
Linda Smith
1234
20.5
35


Employee Records: 
Name            ID           Pay Rate      Hrs Worked     Gross Pay 
Linda Smith     1234         $20.50/hr     35.0          $717.50
John Doe        9999         $15.00/hr     40.0          $600.00

Answer 1

Payroll.java and PayrollClient.java are created in Payroll Package inside the Payroll Package. I have attached the Structure of this project below:

JAVA CODE:

Payroll.java

package Payroll;
// Payroll Class
public class Payroll {
        // private field name of type String
        private String name;
        // private field ID of type int
        private int ID;
        // private field payRate of type double
        private double payRate;
        // private field hrWorked of type double
        private double hrWorked;
        // Default constructor
        public Payroll() {
                // String name - Initialized in default constructor to "John Doe"
                this.name = "John Doe";
                // int ID - Initialized in default constructor to 9999
                this.ID = 9999;
                // double payRate - Initialized in default constructor to 15.0
                this.payRate = 15.0;
                // double hrWorked - Initialized in default constructor to 40
                this.hrWorked = 40;
        }
        // A constructor that accepts the employee’s name, ID, and pay rate as arguments.
        public Payroll(String name, int ID, double payRate, double hrWorked) {
                // The values passed in the argument are assigned to the fields
                this.name = name;
                this.ID = ID;
                this.payRate = payRate;
                this.hrWorked = hrWorked;
        }
        // getName accessor method
        public String getName() {
                return name;
        }
        // getID accessor method
        public int getID() {
                return ID;
        }
        // getPayRate accessor method
        public double getPayRate() {
                return payRate;
        }
        // setPayRate mutator method
        public void setPayRate(double payRate) {
                this.payRate = payRate;
        }
        // getHrWorked accessor method
        public double getHrWorked() {
                return hrWorked;
        }
        // setHrWorked mutator method
        public void setHrWorked(double hrWorked) {
                this.hrWorked = hrWorked;
        }
        // grossPay returns employee’s gross pay
        public double grossPay() {
                return this.hrWorked * this.payRate;
        }
}

PayrollClient.java

package Payroll;
import java.text.DecimalFormat;
import java.util.Scanner;
// PayrollClient Class
public class PayrollClient {
        // Has main method
        public static void main(String[] args) {
                // The decimal number in the print output of gross pay should have two numbers after the decimal point
                DecimalFormat df = new DecimalFormat("#.00");
                // A Scanner object is created
                Scanner sc = new Scanner(System.in);
                // Displays prompt
                System.out.println("Enter the name, ID, pay rate, and hours worked of an employee:");
                // Gets name, ID, pay rate and number of hours worked from the user
                String name = sc.nextLine();
                int ID = Integer.parseInt(sc.nextLine());
                double payRate = Double.parseDouble((sc.nextLine()));
                double hrWorked = Double.parseDouble((sc.nextLine()));
                // Two objects of Payroll class are created
                // p1 is created using user input
                Payroll p1 = new Payroll(name, ID, payRate, hrWorked);
                // p2 object uses default constructor
                Payroll p2 = new Payroll();
                // Output values are printed
                System.out.println("Employee Records:");
                System.out.println("Name         ID       Pay Rate    Hrs Worked    Gross Pay");
                System.out.println(p1.getName() + "  " + p1.getID() + "     $" + p1.getPayRate() + "/hr    " + p1.getHrWorked() 
                + "          $" + df.format(p1.grossPay()));
                System.out.println(p2.getName() + "     " + p2.getID() + "     $" + p2.getPayRate() + "/hr    " + p2.getHrWorked() 
                + "          $" + df.format(p1.grossPay()));
        }
}

OUTPUT: