Port Scanner (JavaFX)

A simple Port Scanner desktop application built using Java and JavaFX.
The application allows the user to scan common TCP ports on a target IP address and display whether each port is OPEN or CLOSED.

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📌 Project Idea

The idea of this project is to demonstrate the Client/Server networking concept.
The scanner (client) attempts to connect to specific ports on a remote host (server).
If the connection succeeds, the port is considered open; otherwise, it is closed.

This project focuses on:

• Understanding TCP socket connections
• Client-side networking
• Multithreading in Java
• GUI development using JavaFX

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🛠 Technologies Used

• Java (JDK 21 / 25)
• JavaFX
• FXML
• Sockets (java.net.Socket)
• IntelliJ IDEA

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🎯 Features

• Simple and clean GUI
• Input field to enter target IP address
• Scan common ports (21, 22, 80, 443, 3389)
• Displays scan results in real-time
• Uses multithreading to avoid freezing the GUI

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🖥 GUI Preview

• TextField for IP address
• Scan button
• Output area showing port status

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⚙ How It Works

1. User enters an IP address.
2. The application tries to create a TCP socket connection for each port.
3. If the connection succeeds → Port is OPEN
4. If it fails → Port is CLOSED
5. Results are displayed in the output area.

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🚀 How to Run

1. Make sure JavaFX SDK is installed.
2. Open the project in IntelliJ IDEA.
3. Add JavaFX VM options: