Не доступен метод из родительского класса

public class employee {
    public static String name;
    public static int age;
    public static String gender;
    public static int salary;
 
    //methods
    public static int getSalary () {
        return salary;
    }
}

public class director extends employee{
    public static int bonusPlus;
 
    director(String name, int age, String gender, int salary, int bonusPlus) {
        this.name = name;
        this.gender = gender;
        this.age = age;
        this.salary = salary;
        this.bonusPlus = bonusPlus;
 
    }
}

public class manager extends employee {
    public static int bonusSalary;
 
    manager (String name, int age, String gender, int salary, int bonusSalary) {
        this.name = name;
        this.age = age;
        this.gender = gender;
        this.salary = salary;
        this.bonusSalary = bonusSalary;
 
    }
}

public class test {
    public static void main(String[] args) {
        manager John = new manager("John",25 ,"male",2500,500);
        director Mike = new director("Mike",25,"male",30000,10000);
        
    }
}