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Two Employee Types
The application consists of five main classes. Four of these classes are application-centric, and the fifth implements the Commons Digester construction rules. I use the Commons Digester to enable the easy creation of role-based upgrade components. (More on this later.)
I’ll describe the classes in the following sections, starting with the base class Employee.java.
The Employee class is pretty self-explanatory—with a constructor, three private data members, three setters, and a toString() method.
public class Employee
{
private String personName;
private String socialSecurityNumber;
private String employeeType;
public Employee(String type)
{
employeeType = type;
}
public void setPersonName(String name)
{
personName = name;
}
public void setSocialSecurityNumber(String ssn)
{
socialSecurityNumber = ssn;
}
public void setType(String type)
{
employeeType = type;
}
public String toString()
{
String newline = System.getProperty("line.separator");
return employeeType + newline +
"Name: " + personName + newline +
"Social Security Number: " +
socialSecurityNumber + newline;
}
}
Next up are the subclasses of Employee: ContractStaff and PermanentStaff.
public class ContractStaff extends Employee
{
public ContractStaff()
{
super("Contractor");
}
}
public class PermanentStaff extends Employee
{
public PermanentStaff()
{
super("Permanent");
}
}
The last application-centric class is called HRStaffDetails. This class stores the details of all contractors and permanent staff.
public class HRStaffDetails
{
private Vector contractors;
private Vector permanentFolks;
public HRStaffDetails()
{
contractors = new Vector();
permanentFolks = new Vector();
}
public void addPermanentStaff(PermanentStaff person)
{
permanentFolks.addElement(person);
}
public void addContractor(ContractStaff person)
{
contractors.addElement(person);
}
public String toString()
{
String newline = System.getProperty("line.separator");
StringBuffer buf = new StringBuffer();
buf.append(newline);
for(int i = 0; i < permanentFolks.size(); i++)
buf.append(permanentFolks.elementAt(i)).append(newline);
buf.append(newline);
for(int i = 0; i < contractors.size(); i++)
{
buf.append(contractors.elementAt(i)).append(newline);
}
return buf.toString();
}
}
That’s the basic code. How do I now build the application?