Android™ How to Program, Second Edition

G.10.5. Indirect Concrete Subclass BasePlusCommissionEmployee

Class BasePlusCommissionEmployee (Fig. G.20) extends class CommissionEmployee (line 4) and therefore is an indirect subclass of class Employee. Class BasePlusCommissionEmployee has a constructor (lines 9–14) that takes as arguments a first name, a last name, a social security number, a sales amount, a commission rate and a base salary. It then passes all of these except the base salary to the CommissionEmployee constructor (line 12) to initialize the inherited members. BasePlusCommissionEmployee also contains a set method (lines 17–24) to assign a new value to instance variable baseSalary and a get method (lines 27–30) to return baseSalary’s value. Method earnings (lines 33–37) calculates ...