36、Java 继承：从基础到高级的深入解析

Java 继承：从基础到高级的深入解析

1. 创建和使用 BasePlusCommissionEmployee 类

BasePlusCommissionEmployee 类代表那些除了佣金之外还能获得基本工资的员工。该类包含了员工的基本信息，如名字、姓氏、社保号码、总销售额、佣金率和基本工资。以下是该类的详细代码：

// Fig. 9.6: BasePlusCommissionEmployee.java
// BasePlusCommissionEmployee class represents an employee who receives
// a base salary in addition to commission.

public class BasePlusCommissionEmployee
{
    private final String firstName;
    private final String lastName;
    private final String socialSecurityNumber;
    private double grossSales; // gross weekly sales
    private double commissionRate; // commission percentage
    private double baseSalary; // base salary per week

    // six-argument constructor
    public BasePlusCommissionEmployee(String firstN