原题：
(1) Employee：这是所有员工总的父类。
① 属性：员工的姓名,员工的生日月份
② 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：Employee 的子类，拿固定工资的员工。
① 属性：月薪。
(3)HourlyEmployee：Employee 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。
① 属性：每小时的工资、每月工作的小时数。
(4) SalesEmployee：Employee 的子类，销售，工资由月销售额和提成率决定。
① 属性：月销售额、提成率。
(5) BasePlusSalesEmployee：SalesEmployee 的子类，有固定底薪的销售人员，工资由底薪加上销售提成部分。
① 属性：底薪。
本题要求根据上述雇员分类，编写一个程序，实现以下功能：
（1）创建一个 Employee 数组，分别创建若干不同的 Employee 对象，并打印某个月的工资。
（2）每个类都完全封装，不允许非私有化属性
加强版：实现增删改查的功能
Employee类
public class Employee {
private String name;
private int month;
public Employee() {
}
public Employee(String name, int month) {
this.name = name;
this.month = month;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getMonth() {
return month;
}
public void setMonth(int month) {
this.month = month;
}
public double getSalary(int month){
double salary=0;
if(this.month==month){
salary=salary+100;
}
return salary;
}
}
SalariedEmployee类
public class SalariedEmployee extends Employee {
private double monthSalary;
public SalariedEmployee() {
}
public SalariedEmployee(String name, int month, double monthSalary) {
super(name, month);
this.monthSalary = monthSalary;
}
public double getMonthSalary() {
return monthSalary;
}
public void setMonthSalary(double monthSalary) {
this.monthSalary = monthSalary;
}
@Override
public double getSalary(int month){
double salary = monthSalary+super.getSalary(month);
return salary;
}
}
HourlyEmployee类
public class HourlyEmployee extends Employee{
private double hourSalary;
private int hours;
public HourlyEmployee() {
}
public HourlyEmployee(String name, int month, double hourSalary, int hours) {
super(name, month);
this.hourSalary = hourSalary;
this.hours = hours;
}
public double getHourSalary() {
return hourSalary;
}
public void setHourSalary(double hourSalary) {
this.hourSalary = hourSalary;
}
public int getHours() {
return hours;
}
public void setHours(int hours) {
this.hours = hours;
}
@Override
public double getSalary(int month){
if(hours < 0){ //如果工作小时数小于0 输出数据错误
System.out.println("数据错误");
return 0;
}
//小于160个小时的 按照每个月的工作小时数乘以每小时的工资
else if(hours <= 160)
return hourSalary*hours+super.getSalary(month);
//超出160个小时的小时数 按照1.5倍计算
else return hourSalary*160+hourSalary*1.5*(hours-160)+super.getSalary(month);
}
}
SalesEmployee类
public class SalesEmployee extends Employee{
private double monthlySales;
private double rate;
public SalesEmployee() {
}
public SalesEmployee(String name, int month, double monthlySales, double rate) {
super(name, month);
this.monthlySales = monthlySales;
this.rate = rate;
}
public double getMonthlySales() {
return monthlySales;
}
public void setMonthlySales(double monthlySales) {
this.monthlySales = monthlySales;
}
public double getRate() {
return rate;
}
public void setRate(double rate) {
this.rate = rate;
}
@Override
public double getSalary(int month){
return this.getMonthlySales()*(1+this.getRate())+super.getSalary(month);
}
}
BasePlusSalesEmployee类
public class BasePlusSalesEmployee extends SalesEmployee{
private double basePay;
public BasePlusSalesEmployee() {
}
public BasePlusSalesEmployee(String name, int month, double monthlySales, double rate, double basePay) {
super(name, month, monthlySales, rate);
this.basePay = basePay;
}
public double getBasePay() {
return basePay;
}
public void setBasePay(double basePay) {
this.basePay = basePay;
}
@Override
public double getSalary(int month){
return basePay+super.getSalary(month);
}
}
Test类（实现增删改查）
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int a;
Employee[] employee;
employee = new Employee[100];
employee[0]=new SalariedEmployee("张三", 1, 6000);
employee[1]=new HourlyEmployee("李四", 2, 50, 180);
employee[2]=new SalesEmployee("王五", 3, 6500, 0.15);
employee[3]=new BasePlusSalesEmployee("赵六", 4, 5000, 0.15, 2000);
employee[4]=new BasePlusSalesEmployee("qz",5,6000,0.1,3000);
System.out.println("--------------欢迎来到员工管理系统---------------");
System.out.println("1.办理员工入职");
System.out.println("2.辞退员工");
System.out.println("3.修改员工信息");
System.out.println("4.查询员工信息");
System.out.println("0.退出");
System.out.println("-----------------------------");
System.out.println("请选择您想办理的业务");
while(true){
a = sc.nextInt();
switch(a){
case 1:
addEmployee(employee);
break;
case 2:
deleteEmployee(employee);
break;
case 3:
updateEmployee(employee);
break;
case 4:
searchEmployee(employee);
break;
case 0:
System.exit(0);
break;
default:
System.out.println("您的输入有误，请重新输入！");
break;
}
}
}
private static void searchEmployee(Employee[] employee){
int i,m,k;
for(k=0;k<employee.length;k++){
if(employee[k]!=null)
System.out.println(employee[k].getName());
}
System.out.println("请输入您想要查询的员工的姓名");
Scanner sc=new Scanner(System.in);
String name=sc.next();
for(i=0;i<employee.length;i++){
if(name.equals(employee[i].getName())){
System.out.println("姓名："+employee[i].getName()+"\n出生月份:"+employee[i].getMonth());
System.out.println("请随机输入一个月份：");
m=sc.nextInt();
System.out.println(employee[i].getName()+"在"+m+"月的工资为："+employee[i].getSalary(m));
break;
}else{
if(i==employee.length){
System.out.println("查无此人");
break;
}else{
continue;
}
}
}
show();
}
private static void deleteEmployee(Employee[] employee){
int k;
for(k=0;k<employee.length;k++){
if(employee[k]!=null)
System.out.println(employee[k].getName());
}
System.out.println("请输入您想要辞退的员工的姓名");
Scanner sc=new Scanner(System.in);
String name=sc.next();
int i;
for(i=0;i<employee.length;i++){
if(name.equals(employee[i].getName())){
break;
}
}
for(int j=i;j<employee.length-1;j++){
employee[j]=employee[j+1];
}
show();
}
private static void addEmployee(Employee[] employee){
Scanner sc=new Scanner(System.in);
int n,month;
String name;
System.out.println("请选择员工类型：");
System.out.println("1) 拿固定工资的员工\n2) 按小时拿工资的员工\n3) 销售人员\n4) 有固定底薪的销售人员\n0) 退出");
int flag=1;
int i;
for(i=0;i<employee.length;i++){
if(employee[i]==null){
break;
}
}
while(flag==1){
n=sc.nextInt();
switch (n){
case 1:
double monthSalary;
employee[i]=new SalariedEmployee();
SalariedEmployee se=(SalariedEmployee)employee[i];
System.out.println("请输入员工姓名");
name=sc.next();
System.out.println("出生月份");
month=sc.nextInt();
System.out.println("月薪");
monthSalary=sc.nextDouble();
se.setName(name);
se.setMonth(month);
se.setMonthSalary(monthSalary);
System.out.println("新入职员工姓名："+name+"\n出生月份："+month+"\n月薪："+monthSalary);
System.out.println("--------------------------=");
System.out.println("若还要添加，请选择：\n否则摁0退出\n1) 拿固定工资的员工\n2) 按小时拿工资的员工\n3) 销售人员\n4) 有固定底薪的销售人员\n0) 退出");
break;
case 2:
double hourSalary;
int hours;
System.out.println("请输入员工姓名");
name=sc.next();
System.out.println("出生月份");
month=sc.nextInt();
System.out.println("时薪");
hourSalary=sc.nextDouble();
System.out.println("每月工作小时数");
hours=sc.nextInt();
employee[i]=new HourlyEmployee(name,month,hourSalary,hours);
HourlyEmployee he = (HourlyEmployee)employee[i];
System.out.println("新入职员工姓名："+name+"\n出生月份："+month+"\n时薪："+hourSalary+"\n每月工作小时数："+hours);
System.out.println("--------------------------=");
System.out.println("若还要添加，请选择：\n否则摁0退出\n1) 拿固定工资的员工\n2) 按小时拿工资的员工\n3) 销售人员\n4) 有固定底薪的销售人员\n0) 退出");
break;
case 3:
double monthlySales;
double rate;
System.out.println("请输入员工姓名");
name=sc.next();
System.out.println("出生月份");
month=sc.nextInt();
System.out.println("月销售额");
monthlySales=sc.nextDouble();
System.out.println("提成率");
rate=sc.nextDouble();
employee[i]=new SalesEmployee(name,month,monthlySales,rate);
SalesEmployee see=(SalesEmployee)employee[i];
System.out.println("新入职员工姓名："+name+"\n出生月份："+month+"\n月销售额："+monthlySales+"\n提成率："+rate);
System.out.println("--------------------------=");
System.out.println("若还要添加，请选择：\n否则摁0退出\n1) 拿固定工资的员工\n2) 按小时拿工资的员工\n3) 销售人员\n4) 有固定底薪的销售人员\n0) 退出");
break;
case 4:
double basePay;
double monthlyS;
double royalty;
System.out.println("请输入员工姓名");
name=sc.next();
System.out.println("出生月份");
month=sc.nextInt();
System.out.println("月销售额");
monthlyS=sc.nextDouble();
System.out.println("提成率");
royalty=sc.nextDouble();
System.out.println("底薪");
basePay=sc.nextDouble();
employee[i]=new BasePlusSalesEmployee(name,month,monthlyS,royalty,basePay);
BasePlusSalesEmployee bpse=(BasePlusSalesEmployee)employee[i];
System.out.println("新入职员工姓名："+name+"\n出生月份："+month+"\n月销售额："+monthlyS+"\n提成率："+royalty+"\n底薪："+basePay);
System.out.println("----------------------------");
System.out.println("若还要添加，请选择：\n否则摁0退出\n1) 拿固定工资的员工\n2) 按小时拿工资的员工\n3) 销售人员\n4) 有固定底薪的销售人员\n0) 退出");
break;
case 0:
flag=0;
continue;
default:
System.out.println("没有此选项，请重新输入！");
break;
}
}
show();
}
private static void updateEmployee(Employee[] employee){
int k,i,n,flag;
String name;
Scanner sc=new Scanner(System.in);
System.out.println("员工名单：");
for(k=0;k<employee.length;k++){
if(employee[k]!=null)
System.out.println(employee[k].getName());
}
System.out.println("请输入你想要操作的员工姓名");
name=sc.next();
//1.根据名字找到员工
for(i=0;i<employee.length;i++){
if(name.equals(employee[i].getName())){
break;
}
}
//2.确定员工类型并打印员工信息,,,3.选择并更改员工信息，不同员工所要更改的信息不同
if(employee[i] instanceof SalariedEmployee){
double tempMonthSalary;
SalariedEmployee se=(SalariedEmployee)employee[i];
System.out.println("-------------------------");
System.out.println("员工姓名："+se.getName()+"\n出生月份："+se.getMonth()+"\n月薪："+se.getMonthSalary());
System.out.println("-------------------------");
System.out.println("请输入更改后的月薪：");
tempMonthSalary=sc.nextDouble();
se.setMonthSalary(tempMonthSalary);
System.out.println("更改后员工信息：");
System.out.println("员工姓名："+se.getName()+"\n出生月份："+se.getMonth()+"\n月薪："+se.getMonthSalary());
show();
}else if(employee[i] instanceof HourlyEmployee){
double tempHourSalary;
int tempHours;
HourlyEmployee he=(HourlyEmployee)employee[i];
System.out.println("-------------------------");
System.out.println("员工姓名："+he.getName()+"\n出生月份："+he.getMonth()+"\n时薪："+he.getHourSalary()+"\n每月工作小时数："+he.getHours());
System.out.println("-------------------------");
flag=1;
while(flag==1){
System.out.println("请选择您想要更改的信息：\n1.时薪\n2.每月工作小时数\n0.退出");
n=sc.nextInt();
switch(n){
case 1:
System.out.println("请输入更改后的时薪：");
tempHourSalary=sc.nextDouble();
he.setHourSalary(tempHourSalary);
System.out.println("更改后员工信息：");
System.out.println("员工姓名："+he.getName()+"\n出生月份："+he.getMonth()+"\n时薪："+he.getHourSalary()+"\n每月工作小时数："+he.getHours());
System.out.println("-------------");
break;
case 2:
System.out.println("请输入更改后的每月工作小时数：");
tempHours=sc.nextInt();
he.setHours(tempHours);
System.out.println("更改后员工信息：");
System.out.println("员工姓名："+he.getName()+"\n出生月份："+he.getMonth()+"\n时薪："+he.getHourSalary()+"\n每月工作小时数："+he.getHours());
System.out.println("-------------");
break;
case 0:
flag=0;
break;
default:
System.out.println("抱歉，您的输入有误，请重新输入");
break;
}
}
show();
}else if(employee[i] instanceof SalesEmployee){
//因为BasePlusSalesEmployee extends SalesEmployee,所以要再判断一下
if(employee[i] instanceof BasePlusSalesEmployee){
double tempRate,tempBasePay;
BasePlusSalesEmployee bpse=(BasePlusSalesEmployee)employee[i];
System.out.println("-------------------------");
System.out.println("员工姓名："+bpse.getName()+"\n出生月份："+bpse.getMonth()+"\n月销售额："+bpse.getMonthlySales()+"\n提成率："+bpse.getRate()+"\n底薪："+bpse.getBasePay());
System.out.println("-------------------------");
flag=1;
while(flag==1){
System.out.println("请选择您想要更改的信息:\n1. 提成率\n2. 底薪\n0. 退出");
n=sc.nextInt();
switch(n){
case 1:
System.out.println("请输入更改后的提成率：");
tempRate=sc.nextDouble();
bpse.setRate(tempRate);
System.out.println("更改后员工信息：");
System.out.println("员工姓名："+bpse.getName()+"\n出生月份："+bpse.getMonth()+"\n月销售额："+bpse.getMonthlySales()+"\n提成率："+bpse.getRate()+"\n底薪："+bpse.getBasePay());
System.out.println("-------------");
break;
case 2:
System.out.println("请输入更改后的底薪：");
tempBasePay=sc.nextInt();
bpse.setBasePay(tempBasePay);
System.out.println("更改后员工信息：");
System.out.println("员工姓名："+bpse.getName()+"\n出生月份："+bpse.getMonth()+"\n月销售额："+bpse.getMonthlySales()+"\n提成率："+bpse.getRate()+"\n底薪："+bpse.getBasePay());
System.out.println("-------------");
break;
case 0:
flag=0;
break;
default:
System.out.println("抱歉，您的输入有误，请重新输入");
}
}
show();
}else{
double tempRate;
SalesEmployee se=(SalesEmployee)employee[i];
System.out.println("-------------------------");
System.out.println("员工姓名："+se.getName()+"\n出生月份："+se.getMonth()+"\n月销售额："+se.getMonthlySales()+"\n提成率："+se.getRate());
System.out.println("-------------------------");
System.out.println("请输入更改后的提成率：");
tempRate=sc.nextDouble();
se.setRate(tempRate);
System.out.println("更改后员工信息：");
System.out.println("员工姓名："+se.getName()+"\n出生月份："+se.getMonth()+"\n月销售额："+se.getMonthlySales()+"\n提成率："+se.getRate());
show();
}
}
}
private static void show(){
System.out.println(" ");
System.out.println(" ");
System.out.println("-----------------------------");
System.out.println("1.办理员工入职");
System.out.println("2.辞退员工");
System.out.println("3.修改员工信息");
System.out.println("4.查询员工信息");
System.out.println("0.退出");
System.out.println("-----------------------------");
System.out.println("请选择您想办理的业务");
}
}
