Oops_Concept-java

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Oops_Concept-java

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This repository contains Java programs demonstrating core OOPs concepts such as Classes, Objects, Inheritance, Polymorphism, Abstraction, and Encapsulation. Designed for beginners to build a strong foundation in Jav

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# ☕ Java OOPs Concept Programs

This repository contains a complete collection of **Java Object-Oriented Programming (OOPs) concepts** with simple, clear, and beginner-friendly examples.

Each program focuses on **one OOP concept** to help students understand Java OOPs step by step.

---

## 📌 OOPs Concepts Covered
### 🔹 Core OOPs
- Class & Object
- Encapsulation
- Inheritance
- Polymorphism
- Abstraction
- Interface

### 🔹 Constructors
- Default Constructor
- Parameterized Constructor
- Copy Constructor
- Private Constructor

### 🔹 Keywords
- this keyword
- super keyword
- static vs instance
- package

### 🔹 Inheritance Types
- Single Inheritance
- Multilevel Inheritance
- Hierarchical Inheritance
- Method Overriding

### 🔹 Polymorphism
- Compile-time Polymorphism
- Runtime Polymorphism

### 🔹 Exception Handling
- Exception basics

### 🔹 File Handling
- FileReader
- FileWriter
- File Handling

### 🔹 Collections
- Java Collection Framework

---

## 📂 Program Files Included

Includes programs such as:
Abstract.java, Interface.java, Encapsulation_Bank.java, Constructor.java,  
Inheritance examples, Polymorphism examples, Exception handling,  
File handling, Collections, and Bank mini programs.

---

## ▶️ How to Run the Programs

```bash
javac FileName.java
java FileName
```

---

## 🎯 Who Should Use This Repository?
- Java beginners
- College students
- Core Java learners
- Interview preparation

---

## 👨‍💻 Author & Contributors
<a href="https://github.com/gitKeshav11/Sanatan_Food-Full_Stack_Project/graphs/contributors">
  <img src="https://contrib.rocks/image?repo=gitKeshav11/Sanatan_Food-Full_Stack_Project" />
</a>

## 📞 Contact

### **Keshav Upadhyay**  
**Role:** Backend Developer (Java & Spring Boot)  
📧 Email: [keshavupadhyayje@gmail.com](mailto:keshavupadhyayje@gmail.com)  
🔗 LinkedIn: [Keshav Upadhyay](https://www.linkedin.com/in/keshavupadhyayje/)  
🐙 GitHub: [gitKeshav11](https://github.com/gitKeshav11)

---

## 📜 License
For learning and educational purposes only.

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