5.20

Posted 2021-02-18 cuixiaorongshazi

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。

package zuoye;

public class ColaEmployee {
    String name;
    int month;
    public ColaEmployee() { 
     }
 
     public ColaEmployee(String name, int month) {
         super();
         this.name = name;
         this.month = month;
     }
 
     public double getSalary(int month) {
         return 0;
     }
 
 }

package zuoye;

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;
       }
   }

}

package zuoye;

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;
           }
       }

   }

}

package zuoye;

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;
       }
   } 
}

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

package zuoye;

public class Test {

    public static void main(String[] args) {
        ColaEmployee[] cel = { new         
    SalariedEmployee("salariedEmployee", 6, 25000), 
                new HourlyEmployee("hourlyEmployee", 5, 200, 200), 
                new SalesEmployee("salesEmployee", 3, 60000, 0.3)
        };
       for (int i = 0; i < cel.length; i++) {
           new Company().getSalary(cel[i], 7);
       }
   }
}