第十一周（周五）

4、 Cola公司的雇员分为以下若干类：(知识点：多态) [必做题]

• 4.1 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。

• 4.2 SalariedEmployee ： ColaEmployee 的子类，拿固定工资的员工。属性：月薪 

• 4.3 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

• 4.4 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

• 4.5 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

1 package text;
  2 
  3 public class homework {
  4     String name;
  5     int month;
  6 
  7     public ColaEmployee() {
  8     }
  9 
 10     public ColaEmployee(String name, int month) {
 11         this.name = name;
 12         this.month = month;
 13 
 14     }
 15 
 16     public double getSalary(int month) {
 17         return 0;
 18     }
 19 }
 20 
 21 
 22 package text;
 23 
 24 public class SalariedEmployee extends ColaEmployee {
 25     double monSalary;
 26 
 27     public SalariedEmployee(String name, int month, double monSalary) {
 28         super(name, month);
 29         this.monSalary = monSalary;
 30     }
 31 
 32     public double getSalary(int month) {
 33         if (super.month == month) {
 34             return monSalary + 100;
 35         } else {
 36             return monSalary;
 37         }
 38     }
 39 }
 40 
 41 package text;
 42 
 43 public class HourlyEmployee extends ColaEmployee {
 44     private int hourSalary;
 45     private int hourNum;
 46 
 47     public HourlyEmployee(String name, int month, int hourSalary, int hourNum) {
 48         super(name, month);
 49         this.hourSalary = hourSalary;
 50         this.hourNum = hourNum;
 51     }
 52 
 53     /*
 54      * 情况： 1.每月工作超出160小时； 2.每月工作超出160 小时 + （该月过生日）100；
 55      * 
 56      * 3.每月工作没超出160小时； 4.每月工作没超出160小时+ （该月过生日）100；
 57      */
 58     public double getSalary(int month) {
 59         if (super.month == month) {
 60             if (hourNum > 160) {
 61                 return hourSalary * 160 + hourSalary * (hourNum - 160) * 1.5 + 100;
 62             } else {
 63                 return hourSalary * hourNum + 100;
 64             }
 65         } else {
 66             if (hourNum > 160) {
 67                 return hourSalary * 160 + hourSalary * (hourNum - 160) * 1.5;
 68             } else {
 69                 return hourSalary * hourNum;
 70             }
 71         }
 72     }
 73 }
 74 
 75 
 76 package text;
 77 
 78 public class SalesEmployee extends ColaEmployee {
 79     private int monthSales;
 80     private double royaltyRate;
 81 
 82     public SalesEmployee(String name, int month, int monthSales, double royaltyRate) {
 83         super(name, month);
 84         this.monthSales = monthSales;
 85         this.royaltyRate = royaltyRate;
 86     }
 87 
 88     public double getSalary(int month) {
 89         if (super.month == month) {
 90             return monthSales * royaltyRate + 100;
 91         } else {
 92             return monthSales * royaltyRate;
 93         }
 94     }
 95 }
 96 
 97 package text;
 98 
 99 public class Company {
100     public void getSalary(ColaEmployee c, int month) {
101         System.out.println(c.name + "在" + month + "月的月薪为:" + c.getSalary(month) + "元");
102     }
103 }
104 
105 
106 package text;
107 
108 public class TestCompany {
109 
110     public static void main(String[] args) {
111         // TODO Auto-generated method stub
112         ColaEmployee[] cel = { new SalariedEmployee("张强", 7, 40000),
113                 new HourlyEmployee("李红", 3, 200, 500),
114                 new SalesEmployee("赵颖", 7, 4500000, 0.4) };
115         for (int i = 0; i < cel.length; i++) {
116             new Company().getSalary(cel[i], 6);
117         }
118     }
119 
120 }