HOW TO FiX EXCEPTIONS??? In order to populate the array, you will need to split(
ID: 3852364 • Letter: H
Question
HOW TO FiX EXCEPTIONS???
In order to populate the array, you will need to split() each String on the (,) character so you can access each individual value of data. Based on the first value (e.g., #) your method will know whether to create a new Manager, HourlyWorker, or CommissionWorker object. Once created, populate the object with the remaining values then store it in the array. Finally, iterate through the array of employees using the enhanced for loop syntax, and print out each employee in the following format:
Manager:
Steve Davis $2000
Commission Employee:
John Kanet $1500 (Base salary: $800, sales: $7000, Commission rate: 10%)
Hourly Worker:
Thomas Hill $1100 (Hourly wage: $20, hours worked: 50)
this is what the text file says:
#Steve, Davis, 2000
*John, Kanet, 800, 7000, 0.10
@Thomas, Hill,20,50
*Lisa, Green,800,6000,0.10
*Chasidy , Funderburk,1000,5000,0.08
@Kayleigh , Bertrand, 25, 45
*Zane, Eckhoff,1800,900, 0.09
@Teressa, Bitterman, 15,35
*Yuri, Viera, 600, 5000,0.10
these are the files i needed to work on and have completed:
public class HourlyWorker extends Employee {
private double hoursWorked;
private int wage;
public HourlyWorker(String firstName, String lastName, double hoursWorked,
int wage) {
super(firstName, lastName);
this.hoursWorked = hoursWorked;
this.wage = wage;
}
public double getHoursWorked() {
return hoursWorked;
}
public int getWage() {
return wage;
}
public void setHoursWorked(double hoursWorked) {
this.hoursWorked = hoursWorked;
}
public void setWage(int wage) {
this.wage = wage;
}
public double earnings() {
// TODO Auto-generated method stub
double pay;
if (hoursWorked > 40) {
pay = (40 * wage) + (1.5 * (hoursWorked - 40) * wage);
} else {
pay = wage * hoursWorked;
}
return pay;
}
}
_________________________________________________________________
public class Manager extends Employee {
private double weeklySalary;
public Manager(String firstName, String lastName, double weeklySalary) {
super(firstName, lastName);
this.weeklySalary = weeklySalary;
}
public double getWeeklySalary() {
return weeklySalary;
}
public void setWeeklySalary(double weeklySalary) {
this.weeklySalary = weeklySalary;
}
public double earnings() {
// TODO Auto-generated method stub
return getWeeklySalary();
}
}
_________________________________________________________________
public class CommissionEmployee extends Employee {
double weeklySalary, commissionRate, weeklySales;
public CommissionEmployee(String firstName, String lastName,
double weeklySalary, double commissionRate, double weeklySales) {
super(firstName, lastName);
this.weeklySalary = weeklySalary;
this.commissionRate = commissionRate;
this.weeklySales = weeklySales;
}
public double getWeeklySalary() {
return weeklySalary;
}
public double getCommissionRate() {
return commissionRate;
}
public double getWeeklySales() {
return weeklySales;
}
public void setWeeklySalary(double weeklySalary) {
this.weeklySalary = weeklySalary;
}
public void setCommissionRate(double commissionRate) {
this.commissionRate = commissionRate;
}
public void setWeeklySales(double weeklySales) {
this.weeklySales = weeklySales;
}
public double earnings() {
return weeklySalary + (commissionRate * weeklySales);
}
}
_________________________________________________________________
import java.io.File;
import java.util.Scanner;
public class Payroll2 {
public static void main(String[] args) {
Scanner scanner = null;
try {
Scanner input = new Scanner(new File(args[0]));
Employee[] employees;
int n = 0;
if (input.hasNext())
n = Integer.parseInt(input.nextLine());
employees = new Employee[n];
char empType;
int i = 0;
while (scanner.hasNext()) {
String line = scanner.nextLine();
empType = line.charAt(0);
System.out.println(line);
String lineArr[] = line.split(",");
String firstName = lineArr[0].substring(1);
String lastName = lineArr[1];
switch (empType) {
case '#': {
double weeklySalary = Double.parseDouble(lineArr[2].trim());
Manager managers = new Manager(firstName, lastName,
weeklySalary);
employees[i] = managers;
}
break;
case '@': {
int wage = Integer.parseInt(lineArr[2].trim());
int hoursWorked = Integer.parseInt(lineArr[3].trim());
HourlyWorker hourlyWorker = new HourlyWorker(firstName,
lastName, hoursWorked, wage);
employees[i] = hourlyWorker;
}
break;
case '*': {
double weeklySalary = Double.parseDouble(lineArr[2].trim());
double weeklySales = Double.parseDouble(lineArr[3].trim());
double commissionRate = Double.parseDouble(lineArr[4]
.trim());
CommissionEmployee commissionEmployee = new CommissionEmployee(
firstName, lastName, weeklySalary, commissionRate,
weeklySales);
employees[i] = commissionEmployee;
}
break;
default:
break;
}
i++;
}
for (int j = 0; j < employees.length; j++) {
System.out.println(employees[j].getClass() + ": "
+ employees[j]);
}
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
}
_____________________________________________________________________
these are the errors im getting:
java.lang.NumberFormatException: For input string: "#Steve, Davis, 2000"
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Integer.parseInt(Integer.java:569)
at java.lang.Integer.parseInt(Integer.java:615)
at Payroll2.main(Payroll2.java:15)
Explanation / Answer
Hi, there is an exception because you are trying to parse from the very first line which is a string,
i guess you are assuming there will number of employees present in the file, if its present then your code will work and i have made few changes to meet other requirements, commented the code to help you understand.
Also, if you dont want to take the original assumption that number of employees is not given, then use an arraylist, i have also mentioned that in comments in the program.
Feel free to ask any questions you have in comments.
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
public class Payroll {
public static void main(String[] args) {
Scanner scanner = null;
try {
Scanner input = new Scanner(new File(args[0]));
Employee[] employees;
int n = 0;
if (input.hasNext())
n = Integer.parseInt(input.nextLine()); // this will fetch the very first line, so it should be an integer i.e. no of employees
employees = new Employee[n];
/* if you dont want to give number in the file, consider using array list like below*/
//List<Employee> newemployees= new ArrayList<>();
//replace employees[i]= managers with newemployees.add(managers)
// if you are using arraylist you can do away with the above code of initializing array with n
char empType;
int i = 0;
while (scanner.hasNext()) {
String line = scanner.nextLine();
empType = line.charAt(0);
System.out.println(line);
String lineArr[] = line.split(",");
// String firstName = lineArr[0].substring(1);// this will remove the first letter of last name, you should remove the substring part
String firstName = lineArr[0];
String lastName = lineArr[1];
switch (empType) {
case '#': {
double weeklySalary = Double.parseDouble(lineArr[2].trim());
Manager managers = new Manager(firstName, lastName,
weeklySalary);
employees[i] = managers;
}
break;
case '@': {
int wage = Integer.parseInt(lineArr[2].trim());
int hoursWorked = Integer.parseInt(lineArr[3].trim());
HourlyWorker hourlyWorker = new HourlyWorker(firstName,
lastName, hoursWorked, wage);
employees[i] = hourlyWorker;
}
break;
case '*': {
double weeklySalary = Double.parseDouble(lineArr[2].trim());
double weeklySales = Double.parseDouble(lineArr[3].trim());
double commissionRate = Double.parseDouble(lineArr[4]
.trim());
CommissionEmployee commissionEmployee = new CommissionEmployee(
firstName, lastName, weeklySalary, commissionRate,
weeklySales);
employees[i] = commissionEmployee;
}
break;
default:
break;
}
i++;
}
// for (int j = 0; j < employees.length; j++) {
// System.out.println(employees[j].getClass() + ": "
// + employees[j]);
// }
for (Employee j: employees) { // enhanced for loop
if(j instanceof Manager) // checking if he is a manager
{
System.out.println("Manager:");
System.out.println(j.getfirstName()+ " "+j.getlastName()+" $"+((Manager)j).getWeeklySalary() );
}
else if(j instanceof CommissionEmployee)// checking if he is a CommissionEmployee
{
System.out.println("CommissionEmployee:");
System.out.println(j.getfirstName()+ " "+j.getlastName()+" $(Base salary:"
+((CommissionEmployee)j).weeklySalary+",sales: $"+((CommissionEmployee)j).weeklySales+",Commission rate: "+((CommissionEmployee)j).commissionRate+"%)");
}
else
{
System.out.println("Hourly Worker:");
double wage = ((HourlyWorker)j).getWage();
int hours = ((HourlyWorker)j).getHoursWorked();
int earnings = ((HourlyWorker)j).earnings();
System.out.println(j.getfirstName()+ " "+j.getlastName()+" $"+earnings+"(Hourly wage: $"+wage+",hours worked: "+hours+")" );
}
}
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
}
----------------
package practice;
public class Manager extends Employee {
private double weeklySalary;
public Manager(String firstName, String lastName, double weeklySalary) {
super(firstName, lastName);
this.weeklySalary = weeklySalary;
}
public double getWeeklySalary() {
return weeklySalary;
}
public void setWeeklySalary(double weeklySalary) {
this.weeklySalary = weeklySalary;
}
public double earnings() {
// TODO Auto-generated method stub
return getWeeklySalary();
}
}
-----------------------
package practice;
public class CommissionEmployee extends Employee {
double weeklySalary, commissionRate, weeklySales;
public CommissionEmployee(String firstName, String lastName,
double weeklySalary, double commissionRate, double weeklySales) {
super(firstName, lastName);
this.weeklySalary = weeklySalary;
this.commissionRate = commissionRate;
this.weeklySales = weeklySales;
}
public double getWeeklySalary() {
return weeklySalary;
}
public double getCommissionRate() {
return commissionRate;
}
public double getWeeklySales() {
return weeklySales;
}
public void setWeeklySalary(double weeklySalary) {
this.weeklySalary = weeklySalary;
}
public void setCommissionRate(double commissionRate) {
this.commissionRate = commissionRate;
}
public void setWeeklySales(double weeklySales) {
this.weeklySales = weeklySales;
}
public double earnings() {
return weeklySalary + (commissionRate * weeklySales);
}
}
--------------
package practice;
public class HourlyWorker extends Employee {
private int hoursWorked;
private double wage;
public HourlyWorker(String firstName, String lastName, int hoursWorked,
double wage) {
super(firstName, lastName);
this.hoursWorked = hoursWorked;
this.wage = wage;
}
public int getHoursWorked() {
return hoursWorked;
}
public double getWage() {
return wage;
}
public void setHoursWorked(int hoursWorked) {
this.hoursWorked = hoursWorked;
}
public void setWage(int wage) {
this.wage = wage;
}
public double earnings() {
// TODO Auto-generated method stub
double pay;
if (hoursWorked > 40) {
pay = (40 * wage) + (1.5 * (hoursWorked - 40) * wage);
} else {
pay = wage * hoursWorked;
}
return pay;
}
}
Thumbs up if this was helpful, otherwise let me know in comments
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