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。
(1) ColaEmployee ：
package a;
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;
}
}
(2) SalariedEmployee ：
package a;
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;
}
}
}
(3) HourlyEmployee ：
package a;
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;
}
}
}
}
(4) SalesEmployee ：
package a;
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;
}
}
}
(5)Company：
package a;
public class Company {
public void getSalary(ColaEmployee c, int month) {
System.out.println(c.name + "在" + month + "月的月薪为" + c.getSalary(month) + "元");
}
}
TestCompany：
package a;
public class TestCompany {
public static void main(String[] args) {
// TODO Auto-generated method stub
ColaEmployee[] cel = { new SalariedEmployee("Mikell", 6, 600),
new HourlyEmployee("jack", 4, 30, 100),
new SalesEmployee("shift", 2, 8000, 0.4) };
for (int i = 0; i < cel.length; i++) {
new Company().getSalary(cel[i], 9);
}
}
}
