Java基础系列（十三）：多态

public class Employee {

    private String name;
    private double salary;
    private LocalDate hireDay;

    public Employee(String name, double salary, int year, int month, int day) {
        this.name = name;
        this.salary = salary;
        hireDay = LocalDate.of(year, month, day);
    }


    public String getName() {
        return name;
    }

    public double getSalary() {
        return salary;
    }

    public LocalDate getHireDay() {
        return hireDay;
    }

    public void raiseSalary(double byPercent) {
        double raise = this.salary * byPercent / 100;
        salary += raise;
    }
}

public class Manager extends Employee{

    private double bonus;

    public Manager(String name, double salary, int year, int month, int day) {
        super(name, salary, year, month, day);
    }

    @Override
    public double getSalary() {
        return super.getSalary() + bonus;
    }

    public void setBonus(double bonus) {
        this.bonus = bonus;
    }
}


public class ManagerTest {

    public static void main(String[] args) {
        Manager boss = new Manager("Jackey Ma", 80000, 1975, 12, 15);
        boss.setBonus(10000);

        Employee[] staffs = new Employee[3];

        staffs[0] = boss;
        staffs[1] = new Employee("Pony Ma", 40000,1974,1,15);
        staffs[2] = new Employee("Lei Jun",35000,1973,11,15);

        for (Employee staff : staffs) {

            System.out.println("名字 = " + staff.getName() + ", 薪水 = " + staff.getSalary());
        }
    }
}

名字 = Jackey Ma, 薪水 = 90000.0
名字 = Pony Ma, 薪水 = 40000.0
名字 = Lei Jun, 薪水 = 35000.0