11周

package ffff;

public class ColaEmployee {
     String name;
     int month;
    public ColaEmployee() {
        super();
        // TODO Auto-generated constructor stub
    }
    public ColaEmployee(String name, int month) {
        super();
        this.name = name;
        this.month = month;
    }
    
     public double getSalary(int mouth){
         return 0;
     }
}

package ffff;

public class SalariedEmployee extends ColaEmployee {
        double salary;

        

        public SalariedEmployee(String name, int month,double salary) {
            super(name, month);
            this.salary=salary;
            // TODO Auto-generated constructor stub
        }
        public double getSalary(int mouth){
            if(super.month==month){
                
            return salary+1000;
            }
            else{
                return salary;
            }
        }
}

package ffff;

public class HourlyEmployee extends ColaEmployee{
       private int   hoursalary;
       private int hour;
    
    public HourlyEmployee(String name, int month,int hoursalary,int hour) {
        super(name, month);
        this.hoursalary=hoursalary;
        this.hour=hour;
        
        // TODO Auto-generated constructor stub
    }
    public double getSalary(int mouth){
        if(super.month==mouth){
            if(hour>160){
                return hoursalary*160+hoursalary*(hour-160)*1.5+100;
            }
        }
        else{
            if(hour<160){
                return hoursalary*hour;
            }
        }
        return mouth;
        
    }
       
}

package ffff;

public class SalesEmployee extends ColaEmployee {
    

    
        private int monthSales;
        private double royaltyRate;
        public SalesEmployee( String name,int mouth,int monthSales, double royaltyRate) {
            super(name,mouth);
            this.monthSales = monthSales;
            this.royaltyRate = royaltyRate;
        } 
        public double getSalary(int month) {
               if(super.month == month) {
                   return monthSales * royaltyRate + 100;
               }else {
                   return monthSales * royaltyRate;
               }
           }    
     
      
    }

package ffff;

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

package ffff;

public class Test4 {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        ColaEmployee[] cel = {
                new SalariedEmployee("zhangsan", 5, 10000),
                new HourlyEmployee("lisi", 7, 100, 300),
                new SalesEmployee("wangwu", 3, 8000, 0.6)
                };
        for (int i = 0; i < cel.length; i++) {
            new Company().getSalary(cel[i],5);
        }

    }

}

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。