public double calculate(TaxCalculationConditions conditions)
{
ITaxCalculator taxCalculator = null;
//Strategy Pattern
if (conditions.Nationality == Nationality.US)
{
taxCalculator = new USTaxCalculator();
}
else
{
taxCalculator = new CanadaTaxCalculator();
}
return(taxCalculator.calculate(conditions));
}
public static ITaxCalculator createCalculator(Nationality nationality)
{
ITaxCalculator taxCalculator;
if (nationality == Nationality.US)
{
taxCalculator = new USTaxCalculator();
}
else if (nationality == Nationality.Canada)
{
taxCalculator = new CanadaTaxCalculator();
}
else
{
taxCalculator = new EgyptTaxCalculator();
}
return(taxCalculator);
}