Constructor Inheritance in Object Oriented Programming in Dart

void main() {
    var employee = new Employee.fromEmployee("name 1", "female", "e01", 100);
    employee.printEmployee();
}
  
class Human {
    late String name;
    late String gender;
  
    Human.fromNameAndGender(String name, String gender) {
      this.name = name;
      this.gender = gender;
    }
  
    Human() {}
}
  
class Employee extends Human {
    late String id;
    late double salary;
  
    Employee() {
    }
  
    Employee.fromEmployee(String name, String gender, String id, double salary)
        : super.fromNameAndGender(name, gender) {
      this.id = id;
      this.salary = salary;
    }
  
    void printEmployee() {
      print("id: ${this.id}");
      print("salary: ${this.salary}");
      print("name: ${this.name}");
      print("gender: ${this.gender}");
    }
}  
  

Output

id: e01
salary: 100.0 
name: name 1  
gender: female