Hospital Queue Simulation System

A Java-based simulation of a hospital's patient queue management system, prioritizing patients based on urgency (Normal, Critical, Emergency) and processing them using multithreaded caretakers and emergency doctors.

Project Overview

This system simulates a hospital environment where patients arrive with varying priorities and are processed by either caretakers (for Normal/Critical cases) or emergency doctors (for Emergency cases). Key features include:

• Dynamic queue management with priority-based dequeueing.
• Multithreaded processing for efficient patient handling.
• Real-time logging and statistical reporting.

Components

Core Classes

Class	Description
AdaptiveQueue	A queue prioritizing critical patients. Automatically scales when thresholds are exceeded.
CaretakerProcessor	Processes patients in an AdaptiveQueue, logs details, and calculates waiting times.
CriticalPatient	Base class for patients with attributes like arrival time, priority, and service time.
EmergencyPatient	Subclass of CriticalPatient with faster service times for emergency cases.
EmergencyDoctor	Handles emergency patients in dedicated threads.
EmergencyDoctorManager	Manages 5 emergency doctors and assigns patients to available ones.
HospitalQueueSimulation	Main driver class. Generates patients, manages queues, and runs simulations.
MultiPriorityQueue	Manages three priority queues (Normal, Critical, Emergency) for patient distribution.
PriorityQueue	FIFO queue implementation using a linked list for each priority level.
QueueProcessor	Processes patients from a specific priority queue in a thread.

How It Works

Patient Generation

• 100 patients are generated with random arrival times.
• Priority Distribution:
  • Normal (80%): Priority 0.
  • Critical (15%): Priority 1.
  • Emergency (5%): Priority 2.
• Emergency patients have shorter service times (Gaussian-distributed, mean=5 min).

Queue Management

• Caretaker Queues:
  • Created dynamically when existing queues exceed 25 patients.
  • Critical patients are dequeued first.
• Emergency Patients:
  • Assigned to 1 of 5 dedicated emergency doctors.
  • Processed concurrently for faster service.

Multithreading

• Caretakers: Each queue is processed in a separate thread.
• Emergency Doctors: 5 threads handle emergency patients.

Installation & Usage

Requirements

• Java 8 or higher.

Steps

1. Compile:

   javac *.java