If you were using JGraph, you should give a try to JGraphT which is designed for algorithms. One of its features is visualization using the JGraph library. It's still developed, but pretty stable. I analyzed the complexity of JGraphT algorithms some time ago. Some of them aren't the quickest, but if you're going to implement them on your own and need to display your graph, then it might be the best choice. I really liked using its API, when I quickly had to write an app that was working on graph and displaying it later.

试试Annas吧，它是一个开源的图形包，很容易掌握

http://annas.googlecode.com

我不知道我是否可以称之为生产就绪，但是有jGABL。

http://neo4j.org/是一个包含许多图算法的图数据库，并且比大多数内存库具有更好的伸缩性。

JUNG是一个很好的可视化选择，并且也有一组相当不错的可用图算法，包括几种不同的随机图创建、重布线等机制。我还发现，在必要的地方扩展和调整它通常相当容易。

如果你喜欢图形算法，JDSL (Java中的数据结构库)应该足够好了——http://www.cs.brown.edu/cgc/jdsl/