Graph Visualizer

A Java Swing desktop application for visualizing graphs through an interactive adjacency matrix.

Features

• Adjacency matrix editor — enter edge weights directly into a table to build the graph in real time
• Directed / Undirected — switch between graph types; the matrix mirrors symmetrically for undirected graphs
• Weighted / Unweighted — supports arbitrary integer weights or simple 0/1 connectivity
• Smooth rendering — nodes and curved edges are drawn with anti-aliasing and drop shadows
• Pan & Zoom — navigate the canvas by dragging and scrolling the mouse wheel

Project Structure

File	Description
Node.java	Represents a graph node with position and drawing logic
Edge.java	Represents an edge (directed or undirected) with optional weight and curved rendering
Graph.java	Stores the list of nodes and edges; handles edge insertion rules
GraphPanel.java	Swing panel that renders the graph with pan and zoom support
MainWindow.java	Main window with toolbar, adjacency matrix table and event handling

How to Run

1. Compile all .java files inside the graph_algorithms package
2. Run MainWindow

javac graph_algorithms/*.java
java graph_algorithms.MainWindow

Requires Java 8 or later.

Usage

1. Type the number of nodes (1–20) in the Nodes field and click Create matrix
2. Select Directed or Undirected and Weighted or Unweighted
3. Fill in the adjacency matrix — the graph updates automatically
4. Use the mouse wheel to zoom and drag to pan the canvas
5. Click Reset to start over

Author

Sara Belli