Cognifyz Java Development Internship 🚀

Welcome to my repository for the Cognifyz Java Development Internship. This project showcases a series of tasks designed to build strong foundations in Java programming, from basic logic to advanced networking and file handling.

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📑 Table of Contents

• Level 1 Tasks
  • Task 1: Temperature Converter
  • Task 2: Palindrome Checker
  • Task 3: Student Grade Calculator
  • Task 4: Password Generator
• Level 2 Tasks
  • Task 1: Password Strength Checker
  • Task 2: File Encryption/Decryption
  • Task 3: Console Chat Application
• How to Run
• Technologies Used

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🛠 Level 1 Tasks

Level 1 Task 1: Temperature Converter 🌡️

File: L1task1.java

• Description: A tool to convert temperatures between Celsius and Fahrenheit.
• Key Concepts: Input handling, arithmetic formulas, conditional logic.

Level 1 Task 2: Palindrome Checker 🔄

File: L1task2.java

• Description: Checks if a given word or phrase is a palindrome, ignoring non-alphabetic characters and case sensitivity.
• Key Concepts: String manipulation, StringBuilder, Regular Expressions.

Level 1 Task 3: Student Grade Calculator 🎓

File: L1task3.java

• Description: Calculates the average grade of a student based on marks entered for multiple subjects.
• Key Concepts: Arrays, loops, floating-point arithmetic.

Level 1 Task 4: Password Generator 🔑

File: L1task4.java

• Description: Generates a secure, random password based on user-defined length and character requirements (uppercase, lowercase, digits, special characters).
• Key Concepts: Random class, logical branching, String building.

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🏗️ Level 2 Tasks

Level 2 Task 1: Password Strength Checker 💪

File: L2task1.java

• Description: Analyzes the complexity of a user-provided password and provides a strength rating (Weak to Very Strong).
• Key Concepts: String pattern matching (Regex), conditional scoring.

Level 2 Task 2: File Encryption/Decryption 🔐

File: L2task2.java

• Description: A basic file security tool that implements a Caesar Cipher (shift 3) to encrypt or decrypt the contents of a text file.
• Key Concepts: File I/O (BufferedReader/BufferedWriter), character encoding.

Level 2 Task 3: Console Chat Application 💬

File: L2task3.java

• Description: A real-time, console-based chat application supporting basic Client-Server communication.
• Key Concepts: Networking (Sockets, ServerSocket), Multi-threading (reading/writing concurrently).

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🚀 How to Run

1. Prerequisites: Ensure you have JDK installed.
2. Clone the Repository:

   git clone https://github.com/VIJAYAPANDIANT/cognifyz.git
   cd cognifyz

3. Compile a Task:

   javac L1task1.java  # Example for Task 1

4. Execute:

   java L1task1

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💻 Technologies Used

• Language: Java 8+
• APIs: java.util.Scanner, java.util.Random, java.io.*, java.net.*
• Concepts: OOP, File Handling, Networking, Regular Expressions.

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Internship Tasks completed for Cognifyz Technologies.