OOP Kya Hota Hai?
Object-Oriented Programming (OOP) ek programming approach hai jisme hum software ko objects ke roop mein design karte hain. Har object ke paas apne data (properties) aur behavior (methods) hote hain.
Java ek purely object-oriented language hai, jisme har cheez object ke around ghoomti hai.
Real-Life Example
Socho tumhare paas ek Car object hai:
- Properties (Data): color, brand, speed
- Methods (Behavior): start(), stop(), accelerate()
Yeh car ek class ka instance ho sakti hai – jise hum niche aur detail mein samjhenge.
OOP Kyu Important Hai?
- Modular Code – Chhote-chhote parts mein code likhna easy hota hai.
- Reusability – Ek baar likhe code ko baar-baar use kar sakte ho.
- Maintainability – Code samajhna aur modify karna asaan hota hai.
- Real-World Mapping – Real world problems ko as objects model karna easy hota hai.
OOP ke 4 Pillars (Important Concepts)
1. Encapsulation – Data ko wrap karna
- Data ko direct access se protect karta hai.
- Getters aur setters use hote hain.
2. Inheritance – Code reuse ka feature
- Ek class doosri class se properties inherit kar sakti hai.
3. Polymorphism – One name, multiple forms
- Same method name, but different behaviors (overloading/overriding).
4. Abstraction – Hidden complexity
- Sirf important details show karta hai, implementation hide karta hai.
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