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问题 A: 雇员类

- - 题目描述
  - 输入
  - 输出
代码

题目描述

定义下述5个类，其中SalaridEmployee, HourlyEmployee, CommisionEmployee 继承自Employee，basePlusCommisionEmployee继承自 CommisionEmployee。
类属性如下：
Employee: firstName,lastName,socialSecurityNumber
SalaridEmployee: weeklySalary(周薪）
HourlyEmployee: wage(每小时的工钱),hours（月工作小时数）
CommisionEmployee: grossSales(销售额),commissionRate(提成比率)
basePlusCommisionEmployee: baseSalary（月基本工资）

Employee类中定义了抽象方法earning，用于计算员工的月工资。
SalaridEmployee月工资计算为：weeklySalary4
HourlyEmployee月工资计算为：wagehours
CommisionEmployee月工资计算为：grossSalescommissionRate
basePlusCommisionEmployee月工资计算为：grossSalescommissionRate+baseSalary
类还应该包括构造方法，toString方法，属性的get/set方法。
firstName,lastName,socialSecurityNumber的初始化在构造方法中完成。其中对firstName,lastName也要提供get/set方法，对socialSecurityNumber只提供get方法。
其他属性要提供get和set方法。

类中用到的数值建议用double存储。

在Main类中利用这5个类完成相应查询要求。

输入

第一行为一个整数n(0<n<=100)，代表共n个雇员。后边是n行，每行一个雇员的数据，数据格式见样例。其中0表示SalaridEmployee，1表示HourlyEmployee，2表示CommissionEmployee，3表示basePlusCommisionEmployee。紧跟着的三个字符串依次代表firstName,lastName,socialSecurityNumber。后边的数字，如果是SalaridEmployee则代表周薪，如果是HourlyEmployee，则依次代表wage,hours，如果是CommissionEmployee则依次代表grossSales,commissionRate，如果是basePlusCommisionEmployee则依次代表grossSales，commissionRate，baseSalary。
这n行后的第一行为一个整数，m(0<m<100)，代表测试用例条数。后边为m行，每行一条测试用例，数据格式见样例。其中0代表根据firstName（其后边跟的即为firstName）），1代表根据socialSecurityNumber查询（其后边跟的即为firstName）。

样例：

4
0 Ai Meng 2012673901 4312
1 NanXiong Qimu 2016782340 15.2 200
2 Guo Yang 2017672347 46781.3 0.1
3 Rong Huang 2018768901 7854.4 0.28 7098
4
0 Ai
1 2016782340
1 2018768901
0 Guo

输出

若干行，每行表示一个雇员的信息。具体格式见样例（注意各类数据之间都有一个空格）。建议依次调用对象的toString方法输出对象的信息，调用earning方法来输出对象的月工资。
如果一条查询有多条结果（firstName有可能相同），则按月工资从低到高的顺序输出。

java.lang包有一个接口叫Comparable，该接口只有一个方法，即int compareTo(T o)方法；如果我们在自己的类（比如Employee）中实现该接口，那么就可以使用使用Arrays.sort()方法对Employee类的数组进行排序。
int compareTo(T o)方法：
如： obj1.compareTo(obj2)：obj1小于、等于、大于obj2时，分别返回负整数、零、正整数。

样例：

firstName:Ai; lastName:Meng; socialSecurityNumber:2012673901; earning:17248.00
firstName:NanXiong; lastName:Qimu; socialSecurityNumber:2016782340; earning:3040.00
firstName:Rong; lastName:Huang; socialSecurityNumber:2018768901; earning:9297.23
firstName:Guo; lastName:Yang; socialSecurityNumber:2017672347; earning:4678.13

代码

import java.util.Arrays;
import java.util.Scanner;
abstract class Employee
{String firstName,lastName,socialSecurityNumber;double weeklySalary,wage,hours,grossSales,commissionRate,baseSalary;int n;public Employee(int n, String firstName, String lastName, String socialSecurityNumber){this.n = n;this.firstName = firstName;this.lastName = lastName;this.socialSecurityNumber = socialSecurityNumber;}public String getfirstName(){return firstName;}public void setfirstName(String firstName){this.firstName = firstName;}public String getlastName(){return lastName;}public void setlastName(String lastName){this.lastName = lastName;}public String getsocialSecurityNumber(){return socialSecurityNumber;}public  abstract double earning();public String toString(){return "firstName:"+firstName+"; lastName:"+lastName+"; socialSecurityNumber:"+socialSecurityNumber+"; earning:";}
}
class SalaridEmployee extends Employee
{double weeklySarlary;public SalaridEmployee(int n,String firstName,String lastName,String socialSecurityNumber, double weeklySarlary){super(n, firstName, lastName, socialSecurityNumber);this.weeklySarlary=weeklySarlary;}public double earning(){return weeklySarlary*4;//System.out.println(super.toString()+String.format("%.2f", weeklySarlary));}
}
class HourlyEmployee extends Employee
{double wage, hours;public HourlyEmployee(int n, String firstName, String lastName, String socialSecurityNumber, double wage, double hours){super(n, firstName, lastName, socialSecurityNumber);this.wage = wage;this.hours = hours;}public double earning(){return  wage*hours;//System.out.println(super.toString() + String.format("%.2f",wage*hours));}
}
class CommisionEmployee extends Employee
{double grossSales, commissionRate;public CommisionEmployee(int n, String firstName, String lastName, String socialSecurityNumber, double grossSales, double commissionRate){super(n, firstName, lastName, socialSecurityNumber);this.grossSales = grossSales;this.commissionRate = commissionRate;}public double earning(){return grossSales*commissionRate;//System.out.println(super.toString() + String.format("%.2f",grossSales*commissionRate));}
}
class basePlusCommisionEmployee extends CommisionEmployee
{double baseSalary;public basePlusCommisionEmployee(int n, String firstName, String lastName, String socialSecurityNumber, double grossSales, double commissionRate, double baseSalary){super(n, firstName, lastName, socialSecurityNumber, grossSales, commissionRate);this.baseSalary = baseSalary;}public double earning(){double bCE_money=(grossSales*commissionRate+baseSalary);return bCE_money;//System.out.println(super.toString() + String.format("%.2f",bCE_money));}
}
public class Main{public static void main(String args[]){int m;Scanner in = new Scanner(System.in);String str,sss,mm;int i=0;mm=in.nextLine();m=Integer.parseInt(mm);Employee [] emp=new Employee[m];for(int j=m;j>=1;j--){str = in.nextLine();String[] s = str.split(" ");String str1 = s[0];int num = Integer.parseInt(str1);double money=Double.parseDouble(s[4]);if(num==0){emp[i] = new SalaridEmployee(m, s[1], s[2], s[3], money);//p[i].earning();i=i+1;}if(num==1){double a=Double.parseDouble(s[5]);emp[i] = new HourlyEmployee(m, s[1], s[2], s[3], money,a);//people1.earning();i=i+1;}if(num==2){double b=Double.parseDouble(s[5]);emp[i] = new CommisionEmployee(m, s[1], s[2], s[3], money,b);//people2.earning();i=i+1;}if(num==3){double c=Double.parseDouble(s[5]);double d=Double.parseDouble(s[6]);emp[i]  = new basePlusCommisionEmployee(m, s[1], s[2], s[3], money,c,d);//people3.earning();i=i+1;}}	Arrays.sort(emp,(first,second)->(int)(first.earning()-second.earning()));String pp=in.nextLine();for(int p=Integer.parseInt(pp);p>=1;p--){sss=in.nextLine();String []s1=sss.split(" ");String sss1=s1[0];int num1=Integer.parseInt(sss1);if(num1==1){for(int j=0;j<=i-1;j++){if(s1[1].equals(emp[j].socialSecurityNumber)){emp[j].earning();System.out.println(emp[j].toString() + String.format("%.2f",emp[j].earning()));break;}}}else{for(int k=0;k<=i-1;k++){if(s1[1].equals(emp[k].firstName)){emp[k].earning();System.out.println(emp[k].toString() + String.format("%.2f",emp[k].earning()));}}}}in.close();}
}