1.

Java™ 2 Runtime Environment, Standard Edition (version 1.6 Build 17)

Under Sun Microsystems Inc. Binary License.

Web Link: http://www.java.com/en/download/manual.jsp

 

2.

JGraph Library (version 5.8)

Under LGPL License

Web Link: http://sourceforge.net/projects/jgraph/files/jgraph/