// Fig. 10.1: PolymorphismTest.java
// Assigning superclass and subclass references to superclass and
// subclass variables.

public class PolymorphismTest {
   public static void main(String[] args) {
      // assign superclass reference to superclass variable          
      CommissionEmployee commissionEmployee = new CommissionEmployee(
         "Sue", "Jones", "222-22-2222", 10000, .06);                 

      // assign subclass reference to subclass variable      
      BasePlusCommissionEmployee basePlusCommissionEmployee =
         new BasePlusCommissionEmployee(                     
         "Bob", "Lewis", "333-33-3333", 5000, .04, 300);     

      // invoke toString on superclass object using superclass variable
      System.out.printf("%s %s:%n%n%s%n%n", 
         "Call CommissionEmployee's toString with superclass reference ",
         "to superclass object", commissionEmployee.toString());

      // invoke toString on subclass object using subclass variable      
      System.out.printf("%s %s:%n%n%s%n%n", 
         "Call BasePlusCommissionEmployee's toString with subclass",
         "reference to subclass object", 
         basePlusCommissionEmployee.toString());

      // invoke toString on subclass object using superclass variable
      CommissionEmployee commissionEmployee2 =
         basePlusCommissionEmployee;          
      System.out.printf("%s %s:%n%n%s%n", 
         "Call BasePlusCommissionEmployee's toString with superclass",
         "reference to subclass object", commissionEmployee2.toString());
   } 
} 


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