第十一周作业

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 eleven2;

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;
    }
}
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package eleven2;

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;
            }
        }
    }
}
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package eleven2;

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;
        }
    }
}
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package eleven2;

public class SalariedEmployee extends ColaEmployee {
    double monthSalary;

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

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

}
-----------------------------------
package eleven2;

public class Company {
    public void getSalary(ColaEmployee c, int month) {
        System.out.println(c.name + " 在" + month + "月的月工资数额为 " + c.getSalary(month) + "元");
    }

}
--------------------------------------
package eleven2;

public class TextCompany {
    public static void main(String[] args) {
        ColaEmployee[] m = { new SalariedEmployee("固定工资的员工", 5, 30000), new HourlyEmployee("按小时工资员工",10,500,200),
                new SalesEmployee("销售额和提成的", 5, 20000, 0.2) };
        for (int i = 0; i < m.length; i++) {
            new Company().getSalary(m[i], 8);
        }
    }

}