**package Demo513;
/*
定义一个Employee类，该类包含：
private 成员变量name，number，birthday，其中birthday为MyDate类的对象；
abstract方法earnings（）：toString（）方法输出对象的name，number和birt
*/

public abstract class Employee {
private String name ;
private int number ;
private MyDate birthday;

 public String getName() {  
     return name;  
 }

 public void setName(String name) {  
     this.name = name;  
 }

 public int getNumber() {  
     return number;  
 }

 public void setNumber(int number) {  
     this.number = number;  
 }

 public MyDate getBirthday() {  
     return birthday;  
 }

 public void setBirthday(MyDate birthday) {  
     this.birthday = birthday;  
 }

 public Employee(String name, int number, MyDate birthday) {  
     super();  
     this.name = name;  
     this.number = number;  
     this.birthday = birthday;  
 }

 public abstract double earnings();

 @Override  
 public String toString() {  
     return "name="+name+",number"+number+",birthday="  
             +birthday.toString()+"\]";  
 }  

}**

**package Demo513;
/*
MyDate类包括：
private成员变量month，day，year；
toDateString()方法返回日期对应的字符串：xxxx年xx月xx日
*/
public class MyDate {
private int year;
private int month;
private int day;

 public MyDate(int year, int month, int day) {  
     this.year = year;  
     this.month = month;  
     this.day = day;  
 }  
 public String toDateString(){  
     return year + "年"+month+"月"+day+"日";  
 }

 public int getYear() {  
     return year;  
 }

 public void setYear(int year) {  
     this.year = year;  
 }

 public int getMonth() {  
     return month;  
 }

 public void setMonth(int month) {  
     this.month = month;  
 }

 public int getDay() {  
     return day;  
 }

 public void setDay(int day) {  
     this.day = day;  
 }  

}**

**package Demo513;
/*
定义 SalariedEmployee类继承Employee类，实现按月计算工资的员工处理。
private成员变量monthlySalary；
实现父类的抽象方法earnings（），该方法返回monthSalary值，toString（）方法输出员工类型信息
及员工的name，number，birthday。
*/
public class SalariedEmployee extends Employee{
private double monthlySalary;//月工资

 public SalariedEmployee(String name,int number,MyDate birthdat,double Salary) {  
     super(name,number,birthdat);  
     this.monthlySalary = monthlySalary;  
 }

 public double earnings(){  
     return monthlySalary;  
 }

 @Override  
 public String toString() {  
     return "SalariedEmployee{"+super.toString() +  
             "monthlySalary=" + monthlySalary +  
             '}';  
 }  

}**

**package Demo513;
/*
定义 SalariedEmployee类继承Employee类，实现按月计算工资的员工处理。
private成员变量monthlySalary；
实现父类的抽象方法earnings（），该方法返回monthSalary值，toString（）方法输出员工类型信息
及员工的name，number，birthday。
*/
public class SalariedEmployee extends Employee{
private double monthlySalary;//月工资

 public SalariedEmployee(String name,int number,MyDate birthdat,double Salary) {  
     super(name,number,birthdat);  
     this.monthlySalary = monthlySalary;  
 }

 public double earnings(){  
     return monthlySalary;  
 }

 @Override  
 public String toString() {  
     return "SalariedEmployee{"+super.toString() +  
             "monthlySalary=" + monthlySalary +  
             '}';  
 }  

}**

**package Demo513;
/*
定义payrollSystem类，创建Employee变量数组并初始化，该数组存放各类雇员对象的引用。
利用循环结构遍历数组元素。输出各个对象的类型，name，number，birthda，以及对象生日。
当键盘输入本月月份值是，如果本月是某个Employee对象的生日，还要输出增加工资信息。

*/

import java.util.Scanner;

public class PayrollSystem {
public static void main(String[] args) {
Employee[] emp = new Employee[2];
System.out.println();
emp[0] = new SalariedEmployee("noo", 1001, new MyDate(2000, 9, 16), 4000);
emp[1] = new SalariedEmployee("hjj", 1002, new MyDate(2000, 12, 31), 5000);
Scanner scanner=new Scanner(System.in);
System.out.println("请输入本月的月份：");
int month =scanner.nextInt();

     for (int i = 0; i < emp.length; i++) {  
         if(month==emp\[i\].getBirthday().getMonth()){  
             System.out.println("加工资100");  
         }  
         System.out.println(emp\[i\]);  
     }

 }  

}**