DART somo la 37: Class interface

Class interface hii ni class ambayo huweka sintaksia (kanuni, mpangilia) ambapo class zitakuwa zinafuata.unapotaka kuifanyia kazi (impleent) hiyo class anterface utatumia keyword implements . 

Mfano:

// Abstract class

abstract class gari{

}

//

class toyota implements gari{

}

Kuna namna mbili za kutengeneza interface class, moja ni kutumia abstract  keyword  kama ilivyo kwenye mfano uliotangulia na nyingine ni kutumia class kama hapo chini ila mara nyingi huwa inatumika abstract kutengeneza class insterface.

// Abstract class

class gari{

}

//

class toyota implements gari{

}

Sasa nakwenda kutumia mfano ambao tumeuona kwenye somo lililopita. Huu utaanza kukupa aidia na maswali kadhaa kuhusu interface

abstract class gari{

 //abstract method

 tangazo();

 taarifa();

}

class toyota implements gari{

 @override

 tangazo() {

   // TODO: implement taarifa

   print("Tunauza gari aina ya toyota");

 }

 @override

 taarifa() {

   // TODO: implement taarifa

   print("Toyota imeuzwa");

 }

}

class bugati implements gari{

 @override

 tangazo() {

   // TODO: implement tangazo

   print("Tunauza gari aina ya Bugati");

 }

 @override

 taarifa() {

   // TODO: implement taarifa

   print("Bugati imeuzwa");

 }

}

class tipa implements gari{

 @override

 tangazo() {

   // TODO: implement taarifa

   print("Tunauza gari aina ya Tipa");

 }

 @override

 taarifa() {

   // TODO: implement taarifa

   print("Tipa limeuzwa");

 }

}

void main(){

 bugati bu = bugati();

 bu.tangazo();

 bu.taarifa();

 print(" ");

 toyota to = toy...