某公司的僱員分爲如下若干類。寫一個程序，把若干各類類型的員工放在一個Employee 數組裏，寫一個函數，打印出某月每一個員工的工資數額

某公司的僱員分爲如下若干類：
Employee：這是全部員工總的父類，屬性：員工的生日月份。方法：getSalary(int month) 根
據參數月份來肯定工資，若是該月員工過生日，則公司會額外獎勵100 元。
SalariedEmployee：Employee 的子類，拿固定工資的員工。屬性：月薪
HourlyEmployee：Employee 的子類，按小時拿工資的員工，每個月工做超出160 小時的部分
按照1.5 倍工資發放。屬性：每小時的工資、每個月工做的小時數SalesEmployee：Employee
的子類， 銷售人員， 工資由月銷售額和提成率決定。屬性： 月銷售額、提成率
BasePlusSalesEmployee：SalesEmployee 的子類，有固定底薪的銷售人員，工資由底薪加上
銷售提成部分。屬性：底薪。
寫一個程序，把若干各類類型的員工放在一個Employee 數組裏，寫一個函數，打印出某月
每一個員工的工資數額。注意：不容許非私有化屬性。

BasePlusSaleEmployee.java

package ex4_2; public class BasePlusSaleEmployee extends SalesEmployee { private double baseSalary; private double addRate; private double sale; public BasePlusSaleEmployee(double sale,double addRate,double baseSalary) { super(sale, addRate); // TODO Auto-generated constructor stub
 setAddRate(addRate); setBaseSalary(baseSalary); setSale(sale); } @Override public double getSalary() { SalesEmployee a=new SalesEmployee(sale, addRate); // TODO Auto-generated method stub
        return baseSalary+a.getSalary(); } public double getBaseSalary() { return baseSalary; } public void setBaseSalary(double baseSalary) { this.baseSalary = baseSalary; } public double getAddRate() { return addRate; } public void setAddRate(double addRate) { this.addRate = addRate; } public double getSale() { return sale; } public void setSale(double sale) { this.sale = sale; } }

Employee.java

 1 package ex4_2;  2 
 3 public class Employee {  4     
 5     private int monthN=6;//假設如今六月
 6     private int month;  7     private int salary=100;  8     
 9     public Employee() { 10  setMonth(month); 11  } 12     
13     public int getMonth() { 14         return month; 15  } 16 
17     public void setMonth(int month) { 18         this.month = month; 19  } 20     public double getSalary() { 21         if(monthN==month) { 22             return salary; 23  } 24         else return 0; 25  } 26 }

HourlyEmployee.java

package ex4_2; public class HourlyEmployee extends Employee { private double hourlySalary; private int hour; public HourlyEmployee(double hourlySalary,int hour) { super(); setHour(hour); setHourlySalary(hourlySalary); } @Override public double getSalary() { if(hour>160) return 160*hourlySalary+(hour-160)*1.5*hourlySalary; else
            return hour*hourlySalary; } public double getHourlySalary() { return hourlySalary; } public void setHourlySalary(double hourlySalary) { this.hourlySalary = hourlySalary; } public int getHour() { return hour; } public void setHour(int hour) { this.hour = hour; } }

SalariedEmployee.java

package ex4_2; public class SalariedEmployee extends Employee { private double salary; public SalariedEmployee(double salary) { // TODO Auto-generated constructor stub
        super(); setSalary(salary); } @Override public double getSalary() { return salary; } public void setSalary(double salary) { this.salary = salary; } }

SalesEmployee.java

 1 package ex4_2;  2 
 3 public class SalesEmployee extends Employee {  4     
 5     private double sale;  6     private  double addRate;  7     
 8     public SalesEmployee(double sale,double addRate) {  9  setAddRate(addRate); 10  setSale(sale); 11  } 12 
13 
14  @Override 15     public double getSalary() { 16         // TODO Auto-generated method stub
17         return sale*addRate; 18  } 19     
20     
21     public double getSale() { 22         return sale; 23  } 24 
25     public void setSale(double sale) { 26         this.sale = sale; 27  } 28 
29     public double getAddRate() { 30         return addRate; 31  } 32 
33     public void setAddRate(double addRate) { 34         this.addRate = addRate; 35  } 36 
37 
38 }

Tester.java

package ex4_2; import java.util.Calendar; //import java.util.Scanner;

public class Tester { public static void main (String[] args) { Employee employee[]= { new SalariedEmployee(1000), new HourlyEmployee(16,150), new SalesEmployee(500,0.2), new BasePlusSaleEmployee(500,0.2,1000) }; Calendar cal=Calendar.getInstance(); cal.set(1994, 6, 18); for(int i=0;i<employee.length;i++) { int month=cal.get(Calendar.MONTH); Employee a=new Employee(); a.setMonth(month); double  welfare=a.getSalary(); double salary=employee[i].getSalary(); System.out.println("第"+(i+1)+"個:"+(welfare+salary)); } } }