Java——员工工资计算系统（Employee Wage Calculation System）

import java.time.Month;
//父类：Employee
class Employee{
    private String name;
    private Month birthmonth;
    protected Employee(String name, Month birthmonth){
        this.name = name;
        this.birthmonth = birthmonth;
    }

    public String getName() {
        return name;
    }

    public Month getMonth() {
        return birthmonth;
    }
    public int calculateSalary(int month){
        int bonus = birthmonth.getValue() == month ? 100:0;
        return bonus;
    }
}
//子类：拿固定工资的员工（SalariedEmployee）
class SalariedEmployee extends Employee{
    private int monthlySalary;
    public SalariedEmployee(String name, Month birthmonth, int monthlySalary) {
        super(name, birthmonth);
        this.monthlySalary = monthlySalary;
    }

    public int getMonthlySalary() {
        return monthlySalary;
    }

    @Override
    public int calculateSalary(int month) {
        return super.calculateSalary(month)+monthlySalary;
    }
}
//子类：按小时拿工资的员工（HourlyEmployee）
class HourlyEmployee extends Employee{
    private double hourlyRate;
    private int hoursWorked;
    public HourlyEmployee(String name, Month birthmonth, double hourlyRate, int hoursWorked) {
        super(name, birthmonth);
        this.hourlyRate = hourlyRate;
        this.hoursWorked = hoursWorked;
    }

    public double getHourlyRate() {
        return hourlyRate;
    }

    public int getHoursWorked() {
        return hoursWorked;
    }

    @Override
    public int calculateSalary(int month) {
        int baseSalary = (int)(hourlyRate*Math.min(hoursWorked,160));
        int overtimeSalary = (int)(hourlyRate*1.5*Math.max(0,hoursWorked - 160));
        return super.calculateSalary(month);
    }
}
// 子类：销售人员（SalesEmployee）
class SalesEmployee extends Employee {
    private double monthlySales;
    private double commissionRate;

    public SalesEmployee(String name, Month birthMonth, double monthlySales, double commissionRate) {
        super(name, birthMonth);
        this.monthlySales = monthlySales;
        this.commissionRate = commissionRate;
    }

    public double getMonthlySales() {
        return monthlySales;
    }

    public double getCommissionRate() {
        return commissionRate;
    }

    @Override
    public int calculateSalary(int month) {
        int commission = (int) (monthlySales * commissionRate);
        return super.calculateSalary(month) + commission;
    }
}
// 子类：有固定底薪的销售人员（BasePlusSalesEmployee）
class BasePlusSalesEmployee extends SalesEmployee {
    private int baseSalary;

    public BasePlusSalesEmployee(String name, Month birthMonth, double monthlySales, double commissionRate, int baseSalary) {
        super(name, birthMonth, monthlySales, commissionRate);
        this.baseSalary = baseSalary;
    }

    public int getBaseSalary() {
        return baseSalary;
    }

    @Override
    public int calculateSalary(int month) {
        return super.calculateSalary(month) + baseSalary;
    }

}
public class Main {
    public static void main(String[] args) {
        // 创建几个不同类型的员工对象
        Employee employee1 = new SalariedEmployee("Alice", Month.JANUARY, 3000);
        Employee employee2 = new HourlyEmployee("Bob", Month.FEBRUARY, 20, 200);
        Employee employee3 = new SalesEmployee("Charlie", Month.MARCH, 10000, 0.05);
        Employee employee4 = new BasePlusSalesEmployee("David", Month.APRIL, 15000, 0.04, 2500);

        // 打印某个员工的信息
        printEmployeeInfo(employee1);
        System.out.println();
        printEmployeeInfo(employee2);
        System.out.println();
        printEmployeeInfo(employee3);
        System.out.println();
        // 打印某个员工在某个月的工资
        System.out.println(employee1.getName() + ": " + employee1.calculateSalary(3));
        System.out.println(employee2.getName() + ": " + employee2.calculateSalary(4));
        System.out.println(employee3.getName() + ": " + employee3.calculateSalary(5));
        System.out.println(employee4.getName() + ": " + employee4.calculateSalary(6));

    }

    private static void printEmployeeInfo(Employee employee) {
        System.out.println("Name: " + employee.getName());
        System.out.println("Birth Month: " + employee.getMonth());
        System.out.println("Salary for current month (assuming current month is 7): " + employee.calculateSalary(7));
        System.out.println("--------------------");
    }
}