Java Console Application

A simple Java console application that demonstrates basic Java programming concepts and console input/output operations.

Project Description

This Java Console Application is designed to showcase fundamental Java programming principles through a command-line interface. The application allows users to interact with various features through text-based commands, demonstrating core concepts such as:

Features

Requirements

• Java Development Kit (JDK) 21 or higher
• Any Java IDE (Eclipse, IntelliJ IDEA, etc.) or a text editor

Getting Started

1. Clone the repository:

   git clone https://github.com/vkpro/JavaConsoleApp.git
   

2. Open the project in your preferred IDE or navigate to the project directory in your terminal.

3. Compile the Java files:

   ./gradlew build
   

   Without Gradle:

   mkdir -p build/classes
   javac -d build/classes src/main/java/com/github/vkpro/*.java
   

4. Run the application:

   ./gradlew run
   

   Without Gradle:

   java -cp build/classes com.github.vkpro.Main
   

   Create executable JAR (optional):

   ./gradlew jar
   java -jar build/libs/JavaConsoleApp-*.jar
   

   Without Gradle (create JAR):

   mkdir -p build/libs
   jar cvfe build/libs/JavaConsoleApp.jar com.github.vkpro.Main -C build/classes .
   java -jar build/libs/JavaConsoleApp.jar
   

Usage Examples

Main Menu

Please choose an option:
1. Caesar Cipher Encryption
2. Caesar Cipher Decryption
3. Arithmetic Expression Evaluation
0. Exit

Caesar Cipher Encryption

Please choose an option:
1. Encrypt text from console
2. Encrypt text from file
0. Back to main menu

Arithmetic Expression Evaluation

Enter arithmetic expression: 2 + 3 * 4
Result: 14

Enter arithmetic expression: (10 + 5) / 3
Result: 5

Enter arithmetic expression: 2 * (3 + 4) - 1
Result: 13

Enter arithmetic expression: -5 + 3
Result: -2

Project Structure

• src/main/java/com/github/vkpro/ - Source code directory
  • Main.java - Main application entry point
  • CaesarCipher.java - Caesar cipher implementation
  • ExpressionEvaluator.java - Arithmetic expression parser and evaluator
  • FileHandler.java - File operations handler
• docs/ - Documentation files

Contributing

1. Fork the repository
2. Create your feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add some amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

Contact

Project Link: https://github.com/vkpro/JavaConsoleApp