To build and run the application, run the two commands below:

./gradlew build
java -jar build/libs/graph-builder-1.0.0.jar

Upon opening the program, you will see the following start screen.

This screen allows for you to select the type of graph you want to create. When you select a graph type, a new window will open. The graph drawing window consists of two sections: the graph section for drawing the graph and the statistics section which maintains live statistics as you create the graph.

To create a node, hold down the n key. An outline of a node will appear under the cursor. Click the mouse while holding n to place a node. To create an edge, move the cursor near the node you wish to create an edge from, press e and an edge will appear from the nearest node the the cursor. Click on another node to create an edge between the two nodes. (Note: for a structural graph, holding e creates a positive (+) edge and holding r creates a negative (-) edge.)

To delete an edge or node, hold down the d key. A red x will appear under the cursor. Hover over the node or edge to delete and click the mouse while holding d. If you delete a node, all edges adjacent to it will also be deleted.

Lastly, you can hold down on a node and move the cursor to move the node on the screen.