📄 PDF Converter System (Console-Based)

This is a Java-based console application that allows users to create, merge, split, extract text, and password-protect PDF files.
The project uses Data Structures and Algorithms (DSA) concepts like Stack and Queue for managing undo actions and task history.

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📚 Features

• Create PDF from Text
• Merge multiple PDFs
• Split a PDF into individual pages
• Extract text from a PDF
• Password protect any PDF file
• Undo the last performed operation (using Stack)
• Manage Tasks using Queue

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🛠️ Technologies Used

• Java (JDK 17)
• Apache PDFBox Library
• Data Structures: Stack and Queue
• IDE: VS Code / IntelliJ IDEA

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📦 Project Structure

PDF_Converter_By_Aarohi/
├── src/
│   ├── Main.java
│   ├── PDFService.java
│   ├── TaskManager.java
│   └── UndoManager.java
│
├── lib/
│   └── pdfbox-app-2.0.34.jar
│
├── bin/              (compiled .class files)
│
└── README.md

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🚀 How to Run

1. Download and setup Apache PDFBox:

   • Place pdfbox-app-2.0.34.jar inside the lib/ folder.

2. Compile the Java files:

   javac -cp "lib/pdfbox-app-2.0.34.jar" src/*.java -d bin

3. Run the Project:

   • java -cp "lib/pdfbox-app-2.0.34.jar;bin" Main (Use ; for Windows and : for Mac/Linux)

🧠 Concepts Applied

Stack: Undo functionality to reverse the last file operation.

Queue: Maintaining the task history for all operations.

✍️ Developed By

Aarohi Dixit (2310990173)

Supervisor: Mr. Sachin Garg

🎯 Conclusion

This project showcases real-world usage of Java, file handling, and DSA concepts. It is a lightweight, efficient, offline PDF management system built entirely on the console.