☕ Java OOP Projects

A collection of Java Object-Oriented Programming projects and assignments.

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👨‍💻 About

Student: Hanan Qaisar Focus: Core Java & OOP Principles Repository: Java_OOP

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📁 Directory Structure

Java_OOP/                          (18 directories, 68 files)
│
├── BasicOOP/                      ← Core OOP concepts & practice files
│   ├── Inheritance/
│   ├── Polymorphism/
│   └── *.java (constructors, arrays, strings, matrix ops...)
│
├── CricketTeamManagment/          ← Team & player management system
│   ├── Main.java
│   ├── Player.java
│   └── team.java
│
├── DeliverySystem/                ← Restaurant order & delivery system
│   ├── Main.java
│   ├── Menuitem.java
│   ├── Order.java
│   └── Resturant.java
│
├── Hotel_Management/              ← Hotel booking & room management
│   ├── IndigoHotel/
│   ├── Booking.java
│   ├── Main.java
│   ├── Room_Deluxe.java
│   └── Room_Standard.java
│
├── Library_Management_System/     ← Book & magazine library system
│   ├── Book.java
│   ├── Library1.java
│   ├── LibraryItem.java
│   ├── Magazine.java
│   └── Main.java
│
├── MobileStore/                   ← Mobile inventory & sales system
│   ├── Battery.java
│   ├── Main.java
│   ├── Phone.java
│   └── Store.java
│
├── Music_Library/                 ← Music & podcast library (Dockerized)
│   ├── src/
│   ├── Dockerfile
│   └── README.md
│
├── OOP_Assignments/               ← Lab assignments & exam practice
│   └── *.java (BankAccount, StudentGrade, Matrix, Labs...)
│
├── StringAnalyzing_Processing/    ← String manipulation & algorithms
│   └── Main.java
│
├── University_Staff_Management/   ← Staff hierarchy with inheritance
│   ├── Person.java
│   ├── Employee.java
│   ├── Faculty.java
│   ├── AdminStaff.java
│   └── Main.java
│
├── Vehical_Rental_System/         ← Vehicle rental with polymorphism
│   ├── Vehicle.java
│   ├── Car.java
│   ├── Bike.java
│   ├── SUV.java
│   └── Main.java
│
├── BankAccountTest.java           ← PIN verification & transactions
├── Triangle.java                  ← Geometric calculations
├── University_Staff.java          ← Staff hierarchy demo
└── main.java                      ← General OOP entry point

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🚀 Projects Overview

#	Project	Description	Run
1	BasicOOP	Core OOP concepts — constructors, arrays, strings, matrix operations, inheritance & polymorphism sub-folders	Various .java files
2	CricketTeamManagment	Team management with player registration and stats tracking	Main.java
3	DeliverySystem	Restaurant order and delivery logistics — real-world OOP	Main.java
4	Hotel_Management	Hotel room booking system with deluxe & standard rooms	Main.java
5	Library_Management_System	Book & magazine tracking with library item abstraction	Main.java
6	MobileStore	Mobile phone inventory and sales management	Main.java
7	Music_Library	Music & podcast library system with playback interfaces (Dockerized)	src/Tester.java
8	OOP_Assignments	Lab assignments covering bank accounts, grades, matrix ops	See individual files
9	StringAnalyzing_Processing	String analysis and processing algorithms	Main.java
10	University_Staff_Management	Staff hierarchy using inheritance — Person → Employee → Faculty/Admin	Main.java
11	Vehical_Rental_System	Vehicle rental system — Car, Bike, SUV with polymorphism	Main.java

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🧠 Topics Covered

Topic	Concepts
Classes & Objects	Constructors, copy constructors, instance variables, methods
Encapsulation	Private fields, getters & setters
Inheritance	Parent/child classes, method overriding, staff & vehicle hierarchies
Polymorphism	Method overloading, runtime polymorphism
Abstraction	Abstract classes, interfaces
Has-A Relationship	Object composition & aggregation
Collections	ArrayList, arrays, matrix operations
String Processing	Manipulation, analysis, algorithms

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▶️ How to Run

# Compile
javac FileName.java

# Run
java FileName

Make sure JDK is installed. For Music_Library, Docker is also supported.

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Learning Java OOP one project at a time. 🚀