🚀 Cognifyz Technologies - Java Development Internship

This repository contains all the tasks and projects completed during my Java Development Internship at Cognifyz Technologies.

📌 Completed Levels & Tasks

🟢 Level 1: Core Java Fundamentals

1. Temperature Converter: A highly robust converter with try-catch input validation.
2. Palindrome Checker: Utilized Regex (replaceAll) to smartly ignore spaces and punctuation.
3. Student Grade Calculator: Built using arrays and conditional logic for accurate grading.
4. Random Password Generator: Used java.security.SecureRandom to generate cryptographically unhackable passwords.

🟡 Level 2: Advanced Logic & File Handling

1. Tic-Tac-Toe Game: A 2D-Array matrix implementation with a clean console UI and strict move validation.
2. Password Strength Checker: Implemented advanced Regex patterns to analyze password entropy.
3. File Encryption/Decryption: Built a Caesar Cipher file lock using Try-With-Resources for memory-leak-proof File I/O.

🔴 Level 3: Networking, Concurrency & APIs

1. Chat Application: Developed a multi-threaded, asynchronous Client-Server architecture using Java Sockets.
2. Ticket Booking System: Demonstrated Race Condition prevention using the synchronized keyword in a multi-threaded environment.
3. Pro Calculator (GUI): Developed a sleek, dark-themed desktop application using Java Swing.
4. Live Currency Converter: Fetched real-time exchange rates from a REST API using Java 11 HttpClient and parsed JSON dynamically using Regex.

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Developed by: Ankit Sonkar Language: Java 17