episode twelve.dart

class Human{

  String _name ;
  String _address;
  int _age;
   //الاخصار الصحيح في الويندوز Alt+Insert    to build getter and setter
  Human(this._address , this._name , this._age);

 // int get age => _age;

 // String get address => _address;

  //String get name => _name;
  //يمكن انشاءها ايضا بهذه الطريقة

   void setname (String name){

     this._name = name;
   }
   String getname (){
     return this._name;
   }
   void setage (int age ){

     this._age = age ;
   }
   int getage (){

     return this._age;
   }
   void setaddress (String address){

     this._address = address;
   }
   String getaddress (){
     return this._address;
   }
}

main.dart

import 'package:Education1/episode twelve.dart';

main() {
  Human human = Human('sadsad', 'asd', 33);
     human.setname('abo roomy');
  print(human.getname());

}