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My polymorphism code won't work
Doing some work on polymorphism. I want to set a birthdate, hiredate and assign a bonus based on the month of year we're in. The problem I am coming across is the hireDate is showing up as null for some reason. Everything else is working fine, though. They made us write a custom date application and they want us to use that for this example, but I would like to know how to incorporate the built in Date class in Java. How can I do this with this code.
Output currently:
Employees processed individually: salaried employee: Bill Williams Social Security Number: 123-45-6789 Birth Date: 12/7/1975 Hire Date: null weekly salary: $10,800.00 birth date: 12/7/1975 earned: $10,800.00 hourly employee: Karen Johnson Social Security Number: 987-65-4321 Birth Date: 12/31/1980 Hire Date: null hourly wage: $16.75; hours worked: 40.00 earned: $670.00 hourly employee: Wilma Flintstone Social Security Number: 387-63-4331 Birth Date: 1/30/1987 Hire Date: null hourly wage: $16.75; hours worked: 60.00 earned: $1,172.50 commission employee: Betty Rubble Social Security Number: 234-56-7890 Birth Date: 8/9/1980 Hire Date: null gross sales: $10,000.00; commission rate: 0.60 earned: $6,000.00 base-salaried commission employee: George Jetson Social Security Number: 345-67-8901 Birth Date: 2/29/1981 Hire Date: null gross sales: $6,000.00; commission rate: 0.50; base salary: $500.00 earned: $3,500.00 Employees processed polymorphically: salaried employee: Bill Williams Social Security Number: 123-45-6789 Birth Date: 12/7/1975 Hire Date: null weekly salary: $10,800.00 birth date: 12/7/1975 earned $10800.00, hourly employee: Karen Johnson Social Security Number: 987-65-4321 Birth Date: 12/31/1980 Hire Date: null hourly wage: $16.75; hours worked: 40.00 earned $670.00, hourly employee: Wilma Flintstone Social Security Number: 387-63-4331 Birth Date: 1/30/1987 Hire Date: null hourly wage: $16.75; hours worked: 60.00 earned $1172.50, commission employee: Betty Rubble Social Security Number: 234-56-7890 Birth Date: 8/9/1980 Hire Date: null gross sales: $10,000.00; commission rate: 0.60 earned $6000.00, base-salaried commission employee: George Jetson Social Security Number: 345-67-8901 Birth Date: 2/29/1981 Hire Date: null gross sales: $6,000.00; commission rate: 0.50; base salary: $500.00 new base salary with 10% increase is: $550.00 earned $3550.00, Employee 0 is a SalariedEmployee Employee 1 is a HourlyEmployee Employee 2 is a HourlyEmployee Employee 3 is a CommissionEmployee2 Employee 4 is a BasePlusCommissionEmployee2
public class BasePlusCommissionEmployee2 extends CommissionEmployee2 { private double baseSalary; //base salary per week //six argument constructor public BasePlusCommissionEmployee2( String first, String last, String ssn, double sales, double rate, double salary, String birth, String hire, int month) { super( first, last, ssn, sales, rate, birth, hire, month); setBaseSalary( salary ); }//end six-argument constructor //set baseSalary public void setBaseSalary(double salary) { if(salary >= 0.0) baseSalary = salary; else throw new IllegalArgumentException("Base Salary must be more than 0.0"); }//end method setBaseSalary //return base salary public double getBaseSalary() { return baseSalary; }//end method getBaseSalary //calculate earning; override method earnings in CommissionEmployee @Override public double earnings() { return getBaseSalary() + super.earnings(); }//end method earnings //return String representation of BasePlusCommissionEmployee object public String toString() { return String.format( "%s %s; %s: $%,.2f", "base-salaried", super.toString(), "base salary", getBaseSalary() ); } // end method toString }//end class CommissionEmployee2
public class CommissionEmployee2 extends EmployeeAbstract { private double grossSales; //gross sales private double commissionRate; //commission rate percentage //five-argument constructor public CommissionEmployee2( String first, String last, String ssn, double sales, double rate, String birth, String hire, int month ) { super( first, last, ssn, birth, hire, month); setGrossSales( sales ); setCommissionRate( rate ); } //set CommissionRate public void setCommissionRate(double rate) { if(rate > 0.0 && rate < 1.0) commissionRate = rate; else throw new IllegalArgumentException("Commission rate must be between 0.0 and 1.0"); }//end method setCommissionRate //return commissionRate for our use public double getCommissionRate() { return commissionRate; }//end method getCommissionRate //set GrossSales public void setGrossSales(double sales) { if(sales >= 0.0) grossSales = sales; else throw new IllegalArgumentException("Gross sales must be more than 0.0"); }//end method setGrossSales //return GrossSales for our use public double getGrossSales() { return grossSales; }//end method getGrossSales //calculate earnings; override abstract method earnings in Employee @Override public double earnings() { return getCommissionRate() * getGrossSales(); }//end method earnings //return String representation of CommissionEmployee object @Override public String toString() { return String.format( "%s: %s\n%s: $%,.2f; %s: %.2f", "commission employee", super.toString(), "gross sales", getGrossSales(), "commission rate", getCommissionRate() ); } // end method toString }//end class CommissionEmployee2
//Date class declaration public class Date { private int month; //1 -12 private int day; //1-31 based on month private int year; // any year private static final int[] daysPerMonth =//days in each month {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; //Constructor: call checkMonth to confirm proper value for month; //call checkDay to confirm proper value for day public Date(int theMonth, int theDay, int theYear) { month = checkMonth( theMonth );//validate month year = theYear;//to validate year day = checkDay(theDay); //validate day System.out.printf("Date object constructor for date %s\n", this); }//end constructor Date //utility method to confirm proper month value private int checkMonth(int testMonth) { if(testMonth > 0 && testMonth <= 12)//validate month return testMonth; else //month is invalid throw new IllegalArgumentException("month must be 1-12"); }//end method checkMonth //utility method to confirm proper day value based on month and year private int checkDay(int testDay) { //check if day in range for month if (testDay > 0 && testDay <= daysPerMonth[month]) return testDay; //check for leap year if( month == 2 && testDay == 29 && ( year % 400 == 0 || (year % 4 == 0 && year % 100 != 0 ) ) ) return testDay; throw new IllegalArgumentException("day out-of-range for the specified month and year"); }//ebd method checkDay public int getMonth() { return month; }//end method getMonth public int getDay() { return day; }//end method getDay public int getYear() { return year; }//end method getMonth //return a String of the form month/day/year public String toString() { return String.format("%d/%d/%d", month, day, year); }//method toString }//end class Date
public abstract class EmployeeAbstract { private String firstName; private String lastName; private String socialSecurityNumber; private String birthDate; private String hireDate; private int birthMonth; //three-argument constructor public EmployeeAbstract(String first, String last, String ssn, String birth, String hire, int Month) { firstName = first; lastName = last; socialSecurityNumber = ssn; birthDate = birth; birthMonth = Month; }//end three-argument constructor //get and set method for first name public void setFirstName(String first) { firstName = first; }//end method setfirstName public String getFirstName() { return firstName; }//end method getFirstName //get and set method for last name public void setLastName(String last) { lastName = last; }//end method setLastName public String getLastName() { return lastName; }//end method getLastName //get and set method for social security number public void setSocialSecurityNumber(String ssn) { socialSecurityNumber = ssn; }//end method setSocialSecurityNumber public String getSocialSecurityNumber() { return socialSecurityNumber; }//end method getSocialSecurityNumber public String getBirthDate() { return birthDate; } public String getHireDate() { return hireDate; } public int getbirthMonth() { return birthMonth; } //return String representation of Employee object @Override public String toString() { return String.format("%s %s\n Social Security Number: %s\n Birth Date: %s\n Hire Date: %s", getFirstName(), getLastName(), getSocialSecurityNumber(), getBirthDate(), getHireDate() ); }//end method toString //abstract method overridden by concrete subclasses public abstract double earnings();//no implimentation here }//end class EmployeeAbstract
//Employee Hierarchy test public class PayRollTest { public static void main(String[] args) { //create subclass object SalariedEmployee salariedEmployee = new SalariedEmployee("Bill", "Williams", "123-45-6789", 10800.00, "12/7/1975", "12/31/2003", 12); HourlyEmployee hourlyEmployee = new HourlyEmployee("Karen", "Johnson", "987-65-4321", 16.75, 40, "12/31/1980", "3/4/2003", 12); HourlyEmployee overTimeEmployee = new HourlyEmployee("Wilma", "Flintstone", "387-63-4331", 16.75, 60, "1/30/1987", "5/4/2007", 1); CommissionEmployee2 commissionEmployee = new CommissionEmployee2("Betty", "Rubble", "234-56-7890", 10000, 0.6, "8/9/1980","9/10/2005", 8); BasePlusCommissionEmployee2 BPCE2 = new BasePlusCommissionEmployee2("George", "Jetson", "345-67-8901", 6000, 0.5, 500, "2/29/1981", "6/6/2008", 2); System.out.println("Employees processed individually:\n"); System.out.printf("%s\n%s: $%,.2f\n\n", salariedEmployee, "earned", salariedEmployee.earnings()); System.out.printf("%s\n%s: $%,.2f\n\n", hourlyEmployee, "earned", hourlyEmployee.earnings()); System.out.printf("%s\n%s: $%,.2f\n\n", overTimeEmployee, "earned", overTimeEmployee.earnings()); System.out.printf("%s\n%s: $%,.2f\n\n", commissionEmployee, "earned", commissionEmployee.earnings()); System.out.printf("%s\n%s: $%,.2f\n\n", BPCE2, "earned", BPCE2.earnings()); //create an array for our employees EmployeeAbstract[] employees = new EmployeeAbstract[5]; //initialize array with Employee employees[0] = salariedEmployee; employees[1] = hourlyEmployee; employees[2] = overTimeEmployee; employees[3] = commissionEmployee; employees[4] = BPCE2; System.out.println("Employees processed polymorphically: \n"); //generally process each element in array employees for(EmployeeAbstract currentEmployee : employees) { System.out.println(currentEmployee); //invokes toString //determine if element is a BasePlusCommissionEmployee if(currentEmployee instanceof BasePlusCommissionEmployee2) { //downcast Employee reference to //BasePlusCommissionEmployee reference BasePlusCommissionEmployee2 employee = (BasePlusCommissionEmployee2) currentEmployee; employee.setBaseSalary(1.10 * employee.getBaseSalary()); System.out.printf("new base salary with 10%% increase is: $%,.2f\n", employee.getBaseSalary()); }//end if System.out.printf("earned $%.2f,\n\n", currentEmployee.earnings()); }//end for //get type name of each object in employees array for(int j = 0; j < employees.length; j++ ) System.out.printf("Employee %d is a %s\n", j, employees[j].getClass().getName()); }//end main }//end PayRollTest
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Originally Posted by Floomer99
