🏥 Hospital Management System

A Java-based console application for managing hospital operations efficiently — built with a clean service-oriented architecture and file-based data persistence.

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📋 Table of Contents

• Overview
• Features
• Project Structure
• Getting Started
• Usage
• Data Persistence
• Architecture
• Author

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Overview

The Hospital Management System is a command-line Java application that streamlines core hospital operations. It allows hospital staff to manage patients, doctors, appointments, medical records, and billing — all from a simple, intuitive menu-driven interface. Data is automatically persisted to text files, ensuring records are retained across sessions.

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✨ Features

Module	Capabilities
🧑‍⚕️ Patient Management	Add patients, view all records, search by Patient ID
👨‍⚕️ Doctor Management	Register doctors with specializations, view all doctors
📅 Appointment Booking	Schedule appointments between patients and doctors
🗂️ Medical Records	Add and retrieve patient medical history
💰 Billing System	Generate and view patient billing records
💾 Data Persistence	All records auto-saved to .txt files

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📁 Project Structure

Hospital-managment/
│
├── Main.java                  # Entry point — main menu & navigation
│
├── Models
│   ├── Patient.java           # Patient entity (ID, Name, Age, Disease)
│   ├── Doctor.java            # Doctor entity (ID, Name, Specialization)
│   ├── Appointment.java       # Appointment entity (ID, PatientID, DoctorID, Date)
│   ├── Bill.java              # Bill entity (ID, PatientID, Amount)
│   └── MedicalRecord.java     # Medical Record entity
│
├── Services
│   ├── PatientService.java    # Patient CRUD operations
│   ├── DoctorService.java     # Doctor CRUD operations
│   ├── AppointmentService.java# Appointment booking & viewing
│   ├── BillingService.java    # Bill generation & viewing
│   ├── MedicalRecordService.java # Medical record management
│   └── Utils.java             # File I/O utility (read/write)
│
└── Data Files (auto-generated)
    ├── patients.txt
    ├── doctors.txt
    ├── appointments.txt
    ├── bills.txt
    └── medical_records.txt

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🚀 Getting Started

Prerequisites

• Java JDK 8 or higher
• A terminal / command prompt

Compilation

Navigate to the Hospital-managment/ directory and compile all .java files:

cd Hospital-managment
javac *.java

Running the Application

java Main

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🖥️ Usage

Upon launching, you will see the main menu:

=== HOSPITAL MANAGEMENT SYSTEM ===
1. Patient Management
2. Doctor Management
3. Appointment Management
4. Medical Records
5. Billing
6. Exit
Enter choice:

Navigate by entering the corresponding number. Each sub-menu provides options to add or view records. For example:

• Patient Management → Add Patient: enter name, age, and diagnosis
• Appointment Management → Book Appointment: link a patient ID to a doctor ID with a date
• Billing → Generate Bill: enter the patient ID and the billing amount

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💾 Data Persistence

All records are stored as comma-separated values (CSV) in plain text files in the running directory:

File	Contents
patients.txt	id,name,age,disease
doctors.txt	id,name,specialization
appointments.txt	id,patientId,doctorId,date
bills.txt	id,patientId,amount
medical_records.txt	Medical history entries

Data is loaded at startup and appended on every new entry — no database required.

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🏛️ Architecture

The system follows a Service-Oriented Architecture (SOA) pattern:

Main.java (Controller / UI Layer)
    │
    ├── PatientService        ──► patients.txt
    ├── DoctorService         ──► doctors.txt
    ├── AppointmentService    ──► appointments.txt
    ├── BillingService        ──► bills.txt
    └── MedicalRecordService  ──► medical_records.txt
              │
              └── Utils.java (File I/O Layer)

• Models hold data (plain Java objects).
• Services handle business logic and delegate I/O to Utils.
• Utils provides reusable readAll() and writeToFile() methods.

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👤 Author

Pradyumn Krishna Arya
📦 GitHub: Code-ve/Pradyumn_Krishna_Arya

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This project was developed as part of a Java programming submission demonstrating object-oriented programming principles, file handling, and service-oriented design.