AlphaBot AI Chatbot.
A Java conversational agent powered by pattern-based NLP, intent classification, memory persistence, and dynamic multi-response generation.
Interactive AlphaBot Live Chat
Talk to AlphaBot in real-time. It runs the exact regex intent classification logic from the Java NLPEngine.java class.
Official Video Walkthrough
Watch the full console conversation demonstrating natural dialogue, math evaluation, and intent recognition.
▶ Task 3 Demonstration — AlphaBot Chatbot In Action
Full HD RecordingSystem Architecture & Java NLP Design
Pattern-driven natural language processing using modular intent mapping and conversation memory persistence.
NLPEngine.java
Iterates through compiled regex patterns. When an intent matches, randomly samples from pre-defined contextual response variants.
Intent.java
Data structure binding an intent tag to a collection of regex patterns and corresponding bot response choices.
ChatMemory.java
Handles session history persistence to local disk (chat_memory.txt) for auditing and contextual recall.
Chatbot.java
The central controller orchestrating input normalization, command routing, formatting, and graceful termination.
public class NLPEngine { private List<Intent> intents; public NLPEngine() { intents = new ArrayList<>(); loadIntents(); } public String processInput(String input) { for (Intent intent : intents) { if (intent.matches(input)) { return intent.getRandomResponse(); } } return "I'm not quite sure I understand. Type 'help' to see what I can do!"; } }
How to Run Locally in Terminal
Start the interactive chat interface directly in your command shell.
Navigate into the project folder and launch with Java:
cd Task3_AIChatbot javac *.java java Chatbot