一道java题，大神们求解！

import java.util.Calendar;
public class Employee {
    private String name;
    private int month;
    public int getSalary(int month){
        Calendar cal = Calendar.getInstance();
        int m = cal.get(Calendar.MONTH) + 1;
        return m==month?100:0;
    }
}

public class SalariedEmployee extends Employee{
    private int monthlyPay;

    public int getMonthlyPay() {
        return monthlyPay;
    }

    public void setMonthlyPay(int monthlyPay) {
        this.monthlyPay = monthlyPay;
    }

   @Override
    public int getSalary(int month) {
        return super.getSalary(month)+monthlyPay;
    }
}

public class HourlyEmployee extends Employee {
    private int peerHourPay;
    private int peerSumHour;

    public int getPeerHourPay() {
        return peerHourPay;
    }

    public void setPeerHourPay(int peerHourPay) {
        this.peerHourPay = peerHourPay;
    }

    public int getPeerSumHour() {
        return peerSumHour;
    }

    public void setPeerSumHour(int peerSumHour) {
        this.peerSumHour = peerSumHour;
    }

    @Override
    public int getSalary(int month) {
        return super.getSalary(month)+peerSumHour*peerHourPay+(int)(peerSumHour>160?(peerSumHour-160)*peerHourPay*0.5:0);
    }
}

package com.example.demo;

import java.math.BigDecimal;
import java.util.Arrays;
import java.util.Calendar;

public class Employee {
    private String name;
    private int month;
    public BigDecimal getSalary(int month){
        Calendar cal = Calendar.getInstance();
        int m = cal.get(Calendar.MONTH) + 1;
        return m == month ? new BigDecimal(100) : BigDecimal.ZERO;
    }

    public static class SalariedEmployee extends Employee {

        private BigDecimal salary = new BigDecimal(5000);

        @Override
        public BigDecimal getSalary(int month) {
            return this.salary.add(super.getSalary(month));
        }
    }

    public static class HourlyEmployee extends Employee {

        // 每小时工资
        private BigDecimal salaryOfHour = new BigDecimal(5);
        // 工作时间
        private BigDecimal workHours = new BigDecimal(180);

        @Override
        public BigDecimal getSalary(int month) {

            if (workHours.compareTo(new BigDecimal(160)) > 0){
                return workHours.subtract(new BigDecimal(160)).multiply(new BigDecimal(1.5).multiply(salaryOfHour))
                        .add(new BigDecimal(160).multiply(salaryOfHour)).add(super.getSalary(month));
            } else {
                return salaryOfHour.multiply(workHours).add(super.getSalary(month));
            }
        }
    }

    public static void main(String[] args) {
        Employee[] employees = {new HourlyEmployee(),new SalariedEmployee()};
        Arrays.stream(employees).forEach(employee -> System.out.println(employee.getSalary(11)));
    }


}

最后两个你自己写写吧