Employee.ava
import java.util.Calendar;
import java.util.GregorianCalendar;
public class Employee {
    /**
    * Employee：这是所有员工总的父类，属性：员工的姓名和生日月份。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。
    */
    private String name;
    protected int month;
    private int base = 6000;
    private int salary;
    public Employee() {
    }
    public Employee(String name, int month) {
        this.setName(name);
        this.setMonth(month);
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public int getMonth() {
        return month;
    }
    public void setMonth(int month) {
        h = month;
    }
    GregorianCalendar g = new GregorianCalendar();
    int flag = (int) g.get(Calendar.MONTH) + 1;
    public int getSalary(int month) {
        int s = Month();
        if (flag == s) {
            salary = base + 100;
        } else
            salary = base;
        return salary;
    }
    void says() {
        System.out.println("当前月份：" + flag);
    }
}
// SalaryEmployee：Employee的子类，拿固定工资的员工。属性：月薪
class SalaryEmployee extends Employee {
    private int base = 6000;
    private int salary;
    public SalaryEmployee(String name, int month) {
        super(name, month);
    }
    public int getSalary(int month) {
        int s = Month();
        if (flag == s) {
            salary = base + 100;
        } else {
            salary = base;
        }
        return salary;
    }
    void says() {
        System.out.println("  " + "姓名：" + Name() + "  " + "生日所在月："
                + Month() + "  " + "所得薪酬：" + getSalary(month));
    }
}
// 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。
// 属性：每小时的工资、每月工作的小时数
class HourlyEmployee extends Employee {
    private int hours;
    private int basehour = 35;
    private int salary;
    public HourlyEmployee(String name, int month, int hours) {
        super(name, month);
        this.hours = hours;
    }
    public int getHours() {
        return hours;
    }
    public void setHours(int hours) {
        this.hours = hours;
    }
    public int getSalary(int month) {
        int s = Month();
        if (hours < 160) {
            if (flag == s) {
                salary = basehour * hours + 100;
            } else
                salary = basehour * hours;
        } else {
            if (flag == s) {
                salary = (int) (basehour * hours * 1.5) + 100;
            } else
                salary = (int) (basehour * hours * 1.5);
        }
        return salary;
    }
    void says() {
        System.out.println("  " + "姓名：" + Name() + "  " + "生日所在月："
                + Month() + "  " + "所得薪酬：" + getSalary(month));
    }
}
// SalesEmployee：Employee的子类，销售人员，工资由月销售额和提成率决定。属性：月销售额、提成率(sales<60000
// bonus=0.1,sales>=60000 bonus=0.125)
java反射获取父类属性class SalesEmployee extends Employee {
    private int sales;
    private double bonus = 0.1;
    private int salary;
    public SalesEmployee(String name, int month, int sales) {
        super(name, month);
        this.sales = sales;
    }
    public int getSales() {
        return sales;
    }
    public void setSales(int sales) {
        this.sales = sales;
    }
    public int getSalary(int month) {
        int s = Month();
        if (sales < 60000) {
            if (s == flag) {
                salary = (int) (sales * bonus) + 100;
            } else
                salary = (int) (sales * bonus);
        } else {
            if (s == flag) {
                salary = (int) (sales * bonus * 1.25) + 100;
            } else
                salary = (int) (sales * bonus * 1.25);
        }
        return salary;
    }
    void says() {
        System.out.println("  " + "姓名：" + Name() + "  " + "生日所在月："
                + Month() + "  " + "所得薪酬：" + getSalary(month));
    }
}
// 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。属性：底薪。
class BasePlusSalesEmployee extends Employee {
    private int sales;
    private int base = 3000;
    private double bonus = 0.75;
    private int salary;
    public BasePlusSalesEmployee(String name, int month, int sales) {
        super(name, month);
        this.sales = sales;
    }
    public int getSales() {
        return sales;
    }
    public void setSales(int sales) {
        this.sales = sales;
    }
    public int getSalary(int month) {
        int s = Month();
        if (sales < 60000) {
            if (s == flag) {
                salary = (int) (sales * bonus) + base + 100;
            } else
                salary = (int) (sales * bonus) + base;
        } else {
            if (s == flag) {
                salary = (int) (sales * bonus * 1.25) + base + 100;
            } else
                salary = (int) (sales * bonus * 1.25) + base;
        }
        return salary;
    }
    void says() {
        System.out.println("  " + "姓名：" + Name() + "  " + "生日所在月："
                + Month() + "  " + "所得薪酬：" + getSalary(month));
    }
}
Test.java//测试类
public class Test {
    public static void main(String[] args){
        Employee e=new Employee(" ",0);
        SalaryEmployee se = new SalaryEmployee("基本工：张三",8);
        HourlyEmployee he = new HourlyEmployee("小时工：李四",11, 190);
        SalesEmployee sa = new SalesEmployee ("销售额工：王二",3,79999);
        BasePlusSalesEmployee bpse = new BasePlusSalesEmployee("基本销售额工：于五",7,5000);

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