Java/com/study/demo13/AttendanceService.java

package com.study.demo13;

abstract class Employee {
    private String name;
    protected int workDays;

    public Employee(String name, int workDays) {
        this.name = name;
        this.workDays = workDays;
    }

    abstract int calculateAttendance();

    boolean isExcellent() {
        return calculateAttendance() >= 40;
    }

    public String getName() {
        return name;
    }
}

class FullTimeEmployee extends Employee {
    public FullTimeEmployee(String name, int workDays) {
        super(name, workDays);
    }

    @Override
    int calculateAttendance() {
        return workDays * 2;
    }
}

class InternEmployee extends Employee {
    public InternEmployee(String name, int workDays) {
        super(name, workDays);
    }

    @Override
    int calculateAttendance() {
        return workDays + 5;
    }
}

public class AttendanceService {
    public static void main(String[] args) {
        Employee fullTime = new FullTimeEmployee("张三", 22);
        Employee intern = new InternEmployee("李四", 20);
        Employee fullTimeLow = new FullTimeEmployee("王五", 18);
        Employee internExcellent = new InternEmployee("赵六", 30);

        System.out.println(fullTime.getName() + " - 出勤分: " + fullTime.calculateAttendance() + " - 是否优秀: " + fullTime.isExcellent());
        System.out.println(intern.getName() + " - 出勤分: " + intern.calculateAttendance() + " - 是否优秀: " + intern.isExcellent());
        System.out.println(fullTimeLow.getName() + " - 出勤分: " + fullTimeLow.calculateAttendance() + " - 是否优秀: " + fullTimeLow.isExcellent());
        System.out.println(internExcellent.getName() + " - 出勤分: " + internExcellent.calculateAttendance() + " - 是否优秀: " + internExcellent.isExcellent());
    }
}