Question

Instructions You will be using Eclipse for all assignments in this course. You can download Eclipse from the Virtual Desktop. Please write a Java program that follows the instructions below. There are two files to download. AvaCam Inc. is interested in the electronic computation of their payroll. They have reached out, and you have agreed to write a program to help them. They have sent you the file employees.txt (right-click to download the file). Store this file in the Assignment 2 directory. The file has one employee per line in the following format: First line of the file: overtime Rate All other lines of the files: lastName firstName payRate hoursWorked Implementation Details 1. Your program should first use a dialog box to read from the user the number of employees to process. This number should be the same as the number of employees in the employees.txt file. 2. Your program should then read one employee at a time and compute their grossSalary (hoursWorked*payRate), taxes (taxRate grossSalary), and netIncome (grossSalary-taxes). The programs should produce the payroll information to users via a dialog box and to the output file names payroll.txt. 3. The output file will have seven lines of information for each employee with the format as shown below: First Name: employees-first-name Last Name: employees-last-name Pay Rate: employees-pay-rate Hours Worked: employees-hours-worked Gross Salary: employees-gross-salary-that-was-computed Taxes: employees-taxes-that-was-computed Net Income: employees-net-income-that-was-computed 4. Once the above information about all employees is produced to the file, the program should write the following information at the end of the file: Number of Employees Processed: number-of-employees-processed-by-the-program Total Payroll: total amount-of-payroll (sum of all gross salaries) Total Taxes: total-taxes-withheld (sum of all taxes) Payroll Checks Total: total-amount-of-checks (sum of all net income) 5. To accomplish this task, the program must use the following functions: o userInstruct: Will inform the user about what the program does. It will use an JOptionPane to do this. The method takes no input from the caller and returns nothing back to the caller. o findSalary Will compute and return salary based on hours, rate of pay, and overtime rate. Anything over 40 hours will be considered overtime. The method receives as input from the caller hours worked, rate of pay, and overtime rate. It will then compute salary and return it to the caller. NOTE: This method will not be interacting with the user. o find Taxes Will compute and return taxes based on salary according to the following table. NOTE: This method will not be interacting with the user.

employees.txt

Answer 1

NOTE: As per the problem statement we did used the exact method descriptions. As the employee.txt is not given in text format so i used only 6 of the employee details manually put on the employee.txt, but you can run it on your system with full input file that you have.

P.S. ask for further clarification(if needed).

JAVA code for the above problem:

import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Scanner;

import javax.swing.JFrame;
import javax.swing.JOptionPane;

public class AvaCam {
  
   private static double overtimeRate = 0;
   private static int count = 0;
   private static double totalPayroll = 0;
   private static double totalTaxes = 0;
   private static double payrollCheckTotal = 0;
  
   public static void userInstruct(){
        JOptionPane.showMessageDialog(new JFrame(),"This program does:\n"
               + "\nDisplay Payroll"
               + "\nWrite Payroll","Welcome",JOptionPane.INFORMATION_MESSAGE);
   }
  
   private static double findSalary(double hours, double rateOfPay, double overtimeRate){
       double salary = (hours>40)? (40)*rateOfPay : hours*rateOfPay; //base salary
       salary += (hours>40)? (hours - 40)*overtimeRate : 0;//including overtime
       return salary;
   }
  
   private static double findTaxes(double salary){
       double taxes = 0;
      
       if(salary <= 250.0) taxes = 0.18*salary;
       else if(salary <= 550.0) taxes = 0.23 * salary;
       else if(salary <= 1100.0) taxes = 0.28*salary;
       else taxes = 0.33 * salary;
      
       return taxes;
   }
  
   private static double findNetIncome(double salary, double taxes){
       return salary - taxes;
   }
  
   public static void displayPayroll(double hours, double salary, double taxes, double netIncome){
       JOptionPane.showMessageDialog(new JFrame(),"Hours: "+hours
               + "\nSalary: "+salary
               + "\nTaxed: "+taxes
               + "\nNet Come: "+netIncome,"Payroll",JOptionPane.INFORMATION_MESSAGE);
   }
  
   public static void displayPayroll(double hours, double salary, double taxes, double netIncome, double payRate, double overtimeRate){
       JOptionPane.showMessageDialog(new JFrame(),"Hours: "+hours
               + "\nPay Rate: "+payRate
               + "\nOverTime Rate: "+overtimeRate
               + "\nSalary: "+salary
               + "\nTaxed: "+taxes
               + "\nNet Come: "+netIncome,"Payroll",JOptionPane.INFORMATION_MESSAGE);
   }
  
   public static void writePayroll(double hours, double salary, double taxes, double netIncome, PrintWriter printWriter){
       printWriter.write(" "+hours+" "+salary+" "+taxes+" "+netIncome+"\n");                                                   
   }
  
   public static void writePayroll(double hours, double salary, double taxes, double netIncome, double payRate, double overtimeRate, PrintWriter printWriter){
       printWriter.write(" "+payRate+" "+overtimeRate+" "+hours+" "+salary+" "+taxes+" "+netIncome+"\n");     
   }

   public static void main(String[] args) {
       userInstruct();
      
       String num = JOptionPane.showInputDialog(new JFrame(),"Enter number of employees to be processed: ");     
      
       try {
              File myObj = new File("C:\\Users\\user\\Desktop\\employees.txt");
              PrintWriter printWriter = new PrintWriter(new File("C:\\Users\\user\\Desktop\\output_employees.txt"));
              Scanner myReader = new Scanner(myObj);
            
              overtimeRate = Double.parseDouble(myReader.nextLine().replaceAll(" ", ""));
            
              while (myReader.hasNextLine()) {
                String data = myReader.nextLine();
              
                String info[] = data.split(" ");
              
                String fname = info[0];
                String lname = info[1];
              
                double payRate = Double.parseDouble(info[2].replaceAll(" ",""));
                double hoursWorked = Double.parseDouble(info[3].replaceAll(" ",""));
//              
                System.out.println(fname+" "+lname);
              
                double salary = findSalary(hoursWorked, payRate, overtimeRate);
                double taxes = findTaxes(salary);
                double netIncome = findNetIncome(salary, taxes);
              
                displayPayroll(hoursWorked, salary, taxes, netIncome, payRate, netIncome);
              
                printWriter.write(fname+"\t"+lname);
                writePayroll(hoursWorked, salary, taxes, netIncome, payRate, netIncome, printWriter);
              
                count++;
                totalPayroll += salary;
                totalTaxes += taxes;
                payrollCheckTotal += netIncome;
              }
            
              printWriter.write("\n\nTotal number of employees processed: "+count+"\nTotal Payroll: "+totalPayroll
                      +"\nTotal Taxes: "+totalTaxes
                      + "\nTotal Payroll Checks: "+payrollCheckTotal);
            
              myReader.close();
              printWriter.flush();
              printWriter.close();
       } catch (FileNotFoundException e) {
              System.out.println("An error occurred.");
              e.printStackTrace();
       }
   }

}

The demo employee.txt:

File employees - Notepad Edit Format View Help 1.3 Tao Alexander 25 40 Elsenpeter Bel 50 38 Eskro Bryan 15 37 Ying Charles 13 22 Vue Christian 17 36| Kaczor Felipe 27 29

The output.txt file for above input file:

The dialog box screenshots:

1.

Welcome X i This program does: Display Payroll Write Payroll ОК

2.

Input Х ? Enter number of employees to be processed: 61 6 OK Cancel

3. For each employee this type of dialog box is popping up as follows:

fname = info[@]; lname = info[1]; AvaCam [Java Application] C:\Program Files\Java\jdk1 Tao Alexander payRate Double.parseDouble(info[2].replaceAll(" hoursWorked = Double.parseDouble(info[3].replaceAll(" out.println(fname+" "+Iname); salary = findSalary(hoursWorked, payRate, overtimeRate taxes = findTaxes(salary); net Income = findNet Income (salary, taxes); Payroll X Payroll(hour Rate -iter.write(t i Hours: 40.0 vyroll(hoursu Pay Rate: 25.0 OverTime Rate: 720.0 Salary: 1000.0 =yroll += sal Taxed: 280.0 axes += taxes -Check Total Net Come: 720.0 OK er.write("\/ "\nTotal Taxes: "+totalTaxes "\nTotal Payroll Checks: "+payrollCheckTotal); late, close(); cer.flush(); er.close(); tFoundException e) { it.println("An error occurred."); ackTrace();

The screenshot of above code snippets for better understanding:

import java. import java.io.FileNotFoundException; import java.io.PrintWriter; import java.util.Scanner; import javax.swing. JFrameli import javax.swing. JOptionPane; public class AvaCam { private static double overtimeRate =; private static int count = 0; private static double totalPayroll = 0; private static double total Taxes = 0; private static double payroll CheckTotal = 0; public static void user Instruct() { JOptionPane.showMessageDialog(new JFrame(), "This program does: \n" + "\nDisplay Payroll" + "\nWrite Payroll", "Welcome", JOptionPane. INFORMATION_MESSAGE); } private static double findsalary(double hours, double rateOfPay, double overtimeRate){ double salary = (hours>40)? (40)*rateOfPay : hourstrateOfPay; //base salary salary += (hours >40)? (hours - 40)*overtimeRate : 0;//including overtime return salary; ܝܟ private static double findTaxes (double salary) { double taxes = 0; if(salary <= 250.0) taxes = 0.18*salary; else if(salary <= 550.0) taxes = 0.23 * salary; else if(salary <= 1100.0) taxes = 0.28*salary; else taxes = 0.33 * salary; return taxes; } Writable Smart Insert 6:26

return taxes; } 37 38 39 40 41 42 43 440 45 46 47 48 49 50 51e 52 53 54 55 56 57 58 59 60 610 private static double findNet Income (double salary, double taxes) { return salary - taxes; } public static void displayPayroll(double hours, double salary, double taxes, double netIncome){ JOptionPane.showMessageDialog(new JFrame(), "Hours: "+hours + "\nSalary: "+salary + "\nTaxed: "+taxes + "\nNet Come: "+netIncome, "Payroll", JOptionPane . INFORMATION_MESSAGE); } public static void displayPayroll(double hours, double salary, double taxes, double netIncome, Houble payRate, double overtimeRate){ JOptionPane.showMessageDialog(new JFrame(), "Hours: "+hours + "\nPay Rate: "+payRate + "\noverTime Rate: "+overtimeRate + "\nSalary: "+salary + "\nTaxed: "+taxes + "\nNet Come: "+netIncome, "Payroll", JOptionPane. INFORMATION_MESSAGE); } public static void writePayroll(double hours, double salary, double taxes, double netIncome, PrintWriter printwriter){ printWriter.write(" "thourst" "+salary+" "+taxest" "+net Income+"\n"); 62 فهه 63 64 65 660 67 68 69 79 public static void writePayroll(double hours, double salary, double taxes, double netIncome, double payRate, double overtimeRate, PrintWriter printWriter) { printwriter.write(" "+payRate+" "+overtimeRate+" "+hours+" "+salary+" "+taxes+" "+net Income+"\n"); }

710 72 73 4 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 // 94 95 96 97 98 99 100 101 102 103 104 195 public static void main(String[] args) { userInstruct(); String num = JOptionPane.showInputDialog(new JFrame(), "Enter number of employees to be processed: "); try { File myObj = new File("C:\\Users\\user\\Desktop\\employees.txt"); Printwriter printwriter = new PrintWriter(new File("C:\Users\\user\\Desktop\loutput_employees.txt")); Scanner myReader = new Scanner (myObj); overtimeRate = Double.parseDouble(myReader.nextLine().replaceAll(" ", "")); while (myReader.hasNextLine()) { String data = myReader.nextLine(); String info[] = data.split(" "); String fname = info[0]; String lname = info[1]; double payRate = Double.parseDouble(info[2].replaceAll("","")); double hoursWorked - Double.parseDouble(info[3].replaceAll("","")); System.out.println(fname+" "+Iname); double salary = findsalary(hoursWorked, payRate, overtimeRate); double taxes = findTaxes (salary); double netIncome - findNet Income ( salary, taxes); displayPayroll (hoursWorked, salary, taxes, netIncome, payRate, netIncome); printWriter.write(fname+"\t"+Iname); writePayroll (hoursWorked, salary, taxes, netIncome, payRate, netIncome, printWriter); count++:

printWriter.write(frame+"\t"+Iname); writePayroll(hoursWorked, salary, taxes, netIncome, payRate, netIncome, printWriter); 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 } count++; totalPayroll += salary; totalTaxes += taxes; payroll CheckTotal += netIncome; } printwriter.write("\n\nTotal number of employees processed: "+count+"\nTotal Payroll: "totalPayroll +"\nTotal Taxes: "+totalTaxes + "\nTotal Payroll Checks: "+payroll CheckTotal); myReader.close(); printWriter.flush(); printWriter.close(); } catch (FileNotFoundException e) { System.out.println("An error occurred."); e.printStackTrace(); }