Question
Starting Out With Java: Early Objects 5th Ed. 11. Exception Project This assignment assumes you have completed Programming Challenge 1 of Chapter 9 ( Employee
Starting Out With Java: Early Objects 5th Ed.
11. Exception Project This assignment assumes you have completed Programming Challenge 1 of Chapter 9 ( Employee and ProductionWorker Classes). Modify the Employee and ProductionWorker classes so they throw exceptions when the following errors occur: The Employee class should throw an exception named InvalidEmployeeNumber when it receives an employee number that is less than 0 or greater than 9999. The ProductionWorker class should throw an exception named InvalidShift when it receives an invalid shift. The ProductionWorker class should throw an exception named InvalidPayRate when it receives a negative number for the hourly pay rate. Write a test program that demonstrates how each of these exception conditions work.
I am attaching a solution to Programming Challenge 1 from Chapter 9 for modification according to the specifications for #11
/**
* Chapter 9
* Programming Challenge 1: Employee and ProductionWorker Classes
* The Employee class stores data about an employee.
*/
public class Employee
{
private String name; // Name
private String employeeNumber; // Employee number
private String hireDate; // Hire date
/**
* Constructor
* Assigns argument values to the fields
*/
public Employee(String n, String num, String date)
{
name = n;
setEmployeeNumber(num);
hireDate = date;
}
/**
* Constructor
* Initializes fields to empty strings
*/
public Employee()
{
name = "";
employeeNumber = "";
hireDate = "";
}
/**
* setName method
*/
public void setName(String n)
{
name = n;
}
/**
* setEmployeeNumber method
*/
public void setEmployeeNumber(String e)
{
if (isValidEmpNum(e))
employeeNumber = e;
else
employeeNumber = "";
}
/**
* setHireDate method
*/
public void setHireDate(String h)
{
hireDate = h;
}
/**
* getName method
*/
public String getName()
{
return name;
}
/**
* getEmployeeNumber method
*/
public String getEmployeeNumber()
{
return employeeNumber;
}
/**
* getHireDate method
*/
public String getHireDate()
{
return hireDate;
}
/**
* isValidEmpNum method
* This private method returns true if the arg
* e references a valid ID number. Othewise it
* returns false.
*/
private boolean isValidEmpNum(String e)
{
boolean status = true;
if (e.length() != 5)
status = false;
else
{
if ((!Character.isDigit(e.charAt(0))) ||
(!Character.isDigit(e.charAt(1))) ||
(!Character.isDigit(e.charAt(2))) ||
(e.charAt(3) != '-') ||
(!Character.isLetter(e.charAt(4))))
status = false;
}
return status;
}
/**
* toString method
*/
public String toString()
{
String str = "Name: " + name + " Employee Number: ";
if (employeeNumber == "")
str += "INVALID EMPLOYEE NUMBER";
else
str += employeeNumber;
str += (" Hire Date: " + hireDate);
return str;
}
}
import java.text.DecimalFormat;
/**
* Chapter 9
* Programming Challenge 1: Employee and ProductionWorker Classes
* The ProductionWorker class stores data about an employee
* that is a production worker.
*/
public class ProductionWorker extends Employee
{
// Constants for day and night shifts
public static final int DAY_SHIFT = 1;
public static final int NIGHT_SHIFT = 2;
private int shift; // Worker's shift
private double payRate; // Worker's pay rate
/**
* Constructor
* Assigns argument values to the fields
*/
public ProductionWorker(String n, String num, String date,
int sh, double rate)
{
super(n, num, date);
shift = sh;
payRate = rate;
}
/**
* Constructor
* Initializes fields to default values
*/
public ProductionWorker()
{
super();
shift = DAY_SHIFT;
payRate = 0.0;
}
/**
* setShift method
*/
public void setShift(int s)
{
shift = s;
}
/**
* setPayRate method
*/
public void setPayRate(double p)
{
payRate = p;
}
/**
* getShift method
*/
public int getShift()
{
return shift;
}
/**
* getPayRate method
*/
public double getPayRate()
{
return payRate;
}
/**
* toString method
*/
public String toString()
{
DecimalFormat dollar = new DecimalFormat("#,##0.00");
String str = super.toString();
str += " Shift: ";
if (shift == DAY_SHIFT)
str += "Day";
else if (shift == NIGHT_SHIFT)
str += "Night";
else
str += "INVALID SHIFT NUMBER";
str += (" Hourly Pay Rate: $" +
dollar.format(payRate));
return str;
}
}
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started
Temporal Databases Research And Practice Lncs 1399
Authors: Opher Etzion ,Sushil Jajodia ,Suryanarayana Sripada
1st Edition
3540645195, 978-3540645191
