Axborot texnologiyalari texnikumi

Ob'ektga yo'naltirilgan dasturlash(Object-Orianed-Programming): Nomidan ko'rinib turibdiki, Ob'ektga yo'naltirilgan dasturlash yoki OYDlar dasturlashda ob'ektlardan foydalanadigan tillarga ishora qiladi. Ob'ektga yo'naltirilgan dasturlash dasturlashda meros, yashirish, polimorfizm va boshqalar kabi real dunyo ob'ektlarini amalga oshirishga qaratilgan. Ushbu maqolada biz ushbu OYD kontseptsiyasi real dunyo stsenariysida qanday amalga oshirilishini muhokama qilamiz.
Keling, Java to'liq kursini onlayn o'rganmoqchi bo'lgan Geek misolini ko'rib chiqaylik. U Java kursini taklif qiladigan turli platformalar haqida bilish uchun manbalardan birini tanlaydi. Aytaylik, u Googleni tanladi va u kursni qidiradi. Google soʻrovni qabul qilgandan soʻng, soʻrov bajarilgunga qadar soʻrovni bajarish uchun turli amallarni bajaradi. Quyidagi rasmda bajarilgan qadamlar ko'rsatilgan:

Quyida yuqoridagi rasmda ko'rsatilgan qadamlarni ko'rsatadigan demo sinfining amalga oshirilishi keltirilgan:

// Java Program to demonstrate

// the above steps

// Here, Geek is a class

class Geek {

// Until no request the

// value will be false
boolean value = false;

private String request = "";

// Constructor of Geek

Geek(String request)
{
// The value becomes true
// once the constructor called
// or when the object created
value = true;

this.request = request;

System.out.println(

"Geek Requested: "
+ request);
}

public String getRequest()

{
return this.request;
}
}

// A google class

class Google {

private String request;

// Constructor of Google

Google(String request)
{
this.request = request;
System.out.println(
"Google Searched: "
+ request);
}

// This class may also contains methods

// through which the request passes
// messages to further more objects
// and also send back a response
}

// Demo class to understand

// A way of using abstraction
public class MainDemo2 {

// Driver code

public static void main(String[] args)
{
// Geek class object creation
Geek g = new Geek("Java");

// Checking whether Geek

// has requested or not
if (g.value) {

// If the Geek requested

// Google object created
Google gl = new Google(g.getRequest());

// Google performs some action

// To satisfy the Geek with his
// Desired result
}
}
}


Chiqish:


Geek Requested: Java
Google Searched: Java