第十一周作业(多态,接口)

4、Cola公司的雇员分为以下若干类：(知识点：多态)

(1) ColaEmployee ：这是所有员工总的父类，属性：员工的姓名,员工的生日月份。
方法：getSalary(int month) 根据参数月份来确定工资，如果该月员工过生日，则公司会额外奖励100 元。

(2) SalariedEmployee ：     ColaEmployee 的子类，拿固定工资的员工。
属性：月薪

(3) HourlyEmployee ：ColaEmployee 的子类，按小时拿工资的员工，每月工作超出160 小时的部分按照1.5 倍工资发放。
属性：每小时的工资、每月工作的小时数

(4) SalesEmployee ：ColaEmployee 的子类，销售人员，工资由月销售额和提成率决定。
属性：月销售额、提成率

(5) 定义一个类Company，在该类中写一个方法，调用该方法可以打印出某月某个员工的工资数额，写一个测试类TestCompany,在main方法，把若干各种类型的员工放在一个ColaEmployee 数组里，并单元出数组中每个员工当月的工资。
public class ColaEmployee {
        String name;
        int month;
        public ColaEmployee() {

        }

        public ColaEmployee(String name, int month) {
           this.name = name;
            this.month = month;
        }

        public double getSalary(int month) {
            return 0;
        }

    }
public class SalariedEmployee extends ColaEmployee{
        double monSalary;
        public SalariedEmployee() {
            super();
            
        }

        public SalariedEmployee(String name, int month, double monSalary) {
            super(name, month);
            this.monSalary = monSalary;
        }

        public double getSalary(int month) {
            if (super.month == month) {
                return monSalary + 100;
            } else {
                return monSalary;
            }
        }

    }
public class HourlyEmployee extends ColaEmployee{
        private int hourSalary;
        private int hourNum;

        public HourlyEmployee(String name, int month, int hourSalary, int hourNum) {
            super(name, month);
            this.hourSalary = hourSalary;
            this.hourNum = hourNum;

        }

        public double getSalary(int month) {
            if (super.month == month) {
                if (hourNum > 160) {
                    return hourSalary * 160 + hourSalary * (hourNum - 160) * 1.5 + 100;
                } else {
                    return hourSalary * hourNum + 100;
                }
            } else {
                if (hourNum > 160) {
                    return hourSalary * 160 + hourSalary * (hourNum - 160) * 1.5;
                } else {
                    return hourSalary * hourNum;
                }
            }

        }

    }
public class SalesEmployee extends ColaEmployee{
         private int monthSales;
        private double royaltyRate;

        public SalesEmployee(String name, int month, int monthSales, double royaltyRate) {
            super(name, month);
            this.monthSales = monthSales;
            this.royaltyRate = royaltyRate;
        }

        public double getSalary(int month) {
            if (super.month == month) {
                return monthSales * royaltyRate + 100;
            } else {
                return monthSales * royaltyRate;
            }
        }

    }
public class Company {
    public void getSalary(ColaEmployee c, int month) {
            System.out.println("在" + month + "月的月薪为" + c.getSalary(month) + "元");
        }

    }
public class TestCompany {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        ColaEmployee[] cel = { new SalariedEmployee("salariedEmployee", 4, 3300),
                        new HourlyEmployee("hourlyEmployee", 1, 123,110),
                        new SalesEmployee("salesEmployee", 3, 6000, 0.21)
                };
                for (int i = 0; i < cel.length; i++) {
                    new Company().getSalary(cel[i],9);
                }
            }