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问题:

Is it possible that anyone has a link to a graph class/library that I can use to produce a graph in Java?

Thanks for any help!

回答1:

My top choice would be JGraph as others have suggested; I am using JGraph5 because it is better documented than the newer alternative, JGraphX. EDIT: JGraphX turns out to be the far superior version, despite the lack of documentation. It's not that hard to figure out.

JGraph

Demonstration app
Feature list
Licensing agreement

Other alternatives I've researched:

JGraphT

"JGraphT is a free Java graph library that provides mathematical graph-theory objects and algorithms...complete source code included, under the terms of the GNU Lesser General Public License." (http://jgrapht.sourceforge.net/)

Main project repository
Example visualizations

JUNG - Java Universal Network/Graph Framework

Main project repository

yEd Graph Editor

Implementation of yFiles library
Demonstration Java applet
About yEd
Saves graphs in GraphML format

回答2:

I used JGraph as a visualizer for networks of nodes/topologies at my previous job, it's not half bad once you get past the architecture (it's a big state machine if I recall correctly).

回答3:

Visual graph: JFreeChart

You may also wish to consider the Google Charts API, if you can make web service requests.

回答4:

A really good alternative is to used the Google Charts API. Platform independent, easy to use, and fast processing (done on Google Server side)

回答5:

graphviz would be my choice. It's not Java, but still terrific and easy to use.

There is a Java component that works with dot to generate graphs. I've used it - very nice, indeed.

回答6:

I would recommend JGraphT. I used it to create multi-leveled graphs in my dissertation and as the base of a GPS Routing Software, understanding what is going on I found a bit of a mind bender, but once looking at how the algorithms package works I found it quite easy to implement A*/D* heuristic algorithms. For working out the distance between nodes on the graph I'd also recommend looking at the Haversine function, if that's your thing.