Casting issues
I am really stuck here and just going in circles trying to figure out what appears to be a relatively simple problem.
I have the following classes in my ongoing program:
Corporation - This is a concrete test class (User interface)
EmployeeUtilities - This is a concrete worker class which has the methods to do stuff to my employee objects
Employee- this is an abstract class
SalaryEmployee- a class with salaried employee methods which extends employee
HourlyEmployee-a class with hourly employee methods which extends employee
There are other but those are the ones I am dealing with right now. I am tasked to use the Corporation class to call a method in the EmployeeUtilities class which will find a certain employee and return the object if found, then use that object to set the number of hours the employee worked. I am stuck on casting issues with sending the object back and forth and would appreciate a little help. I will post some snippets of code that i think are relevant but if more is needed just ask and I will post more. This entire program is probably 1000 lines of code in 11 or 12 classes and I was hoping not to have to post it all but i could certainly email it to someone if need be.
Corporation class - Dealing with case 3
import java.util.*;
publicclass Corporation
{
publicstaticvoid main(String[]args)
{
//Instantiate Scanner, ArrayList and objects
Scanner scan=new Scanner(System.in);
ArrayList <Employee> employeeCollection=new ArrayList<Employee>();
EmployeeUtilities employeeObj=new EmployeeUtilities();
SalaryEmployee salaryObj=null;
HourlyEmployee hourlyObj=null;
EmployeeUtilities temp=null;
//Declare variables
boolean another=true;
int yesNo=0;
int choice=0;
String nameToFind=null;
boolean goodData=false;
//Begin menu loop
while(another)
{
System.out.print("\nPlease Choose from the following options:"+
"\n\n1)Enter a salaried employee"+
"\n2)Enter an hourly employee"+
"\n3)Enter hours worked for an hourly employee"+
"\n4)Get weekly pay for an employee"+
"\n5)List all employees\n6)Exit\n\nEnter choice: ");
try
{
choice=scan.nextInt();
String junk=scan.nextLine();
}
catch(InputMismatchException e)
{
System.out.println("\nThat input is not valid - Please choose 1 through 6 only!");
String junk=scan.nextLine();
}
catch(Exception e)
{
System.out.println("\nThat input is not valid - Please choose 1 through 6 only!");
String junk=scan.nextLine();
}
//Begin menu choice switch
switch(choice)
{
case 1:salaryObj=(SalaryEmployee)employeeObj.salaryEmployee();
employeeCollection.add(salaryObj);
break;
case 2:hourlyObj=(HourlyEmployee)employeeObj.hourlyEmployee();
employeeCollection.add(hourlyObj);
break;
case 3:while(!goodData)
{
System.out.print("\nPlease enter the employees last name: ");
try
{
nameToFind=scan.nextLine();
}
catch(Exception e)
{
System.out.println("\nThat input is not valid - Please enter employees last name.");
}
temp=employeeObj.getEmployee(nameToFind,employeeCollection);
if(temp==null)
{
goodData=false;
}
else
{
temp.hoursWorked();
goodData=true;
}
}
break;
case 4:employeeObj.weeklyPay(employeeCollection);
break;
case 5:employeeObj.listEmployees(employeeCollection);
break;
case 6:another=false;
break;
default:System.out.println("\nThat input is not valid - Please choose 1 through 6 only!");
}//End switch
}//End menu while loop
}//End main method
}//End class
From EmployeeUtilities class -
/**
Method to find an employee by last name
*/
public EmployeeUtilities getEmployee(String last,ArrayList tempArrayList)
{
EmployeeUtilities searchedEmployee=null;
boolean found=false;
int foundIndex=-1;
for(int i=0;i<tempArrayList.size();i++)
{
Employee p=(Employee)tempArrayList.get(i);
String[]nameArray=new String[tempArrayList.size()];
nameArray[i]=p.getLast();
if(nameArray[i].equals(last))
{
found=true;
foundIndex=i;
}
}
if(found)
{
System.out.println("\nThat employee was found.");
searchedEmployee=(EmployeeUtilities)tempArrayList.get(foundIndex);
return searchedEmployee;
}
else
{
System.out.println("\nThat employee was not found, please re-enter the last name.");
System.out.println(searchedEmployee);
return searchedEmployee;
}
}
Everything compiles but on runtime i get this error:
Exception in thread "main" java.lang.ClassCastException: HourlyEmployee
at EmployeeUtilities.getEmployee(EmployeeUtilities.java:453)
at Corporation.main(Corporation.java:81)
This is the line in corporation that is having the problem -
temp=employeeObj.getEmployee(nameToFind,employeeCollection);
I understand the error but really don't know how to go about doing this correctly. I have been stuck here for hours now and would appreciate any feedback.>
