<p>JGraphT是一个免费的Java图形库，提供数学图论中的对象和算法。它支持下各种图形类型：</p>    <ul>     <li><strong>directed</strong> and <strong>undirected</strong> graphs.</li>     <li>graphs with <strong>weighted</strong> / <strong>unweighted</strong> / labeled or any user-defined edges.</li>     <li>various edge multiplicity options, including: <strong>simple-graphs</strong>, <strong>multigraphs</strong>, <strong>pseudographs</strong>. </li>     <li><strong>unmodifiable</strong> graphs - allow modules to provide "read-only" access to internal graphs.</li>     <li><strong>listenable</strong> graphs - allow external listeners to track modification events.</li>     <li><strong>subgraphs</strong> graphs that are auto-updating subgraph views on other graphs.</li>     <li>all compositions of above graphs.</li>    </ul>    <p><strong>项目主页：</strong><a href="http://www.open-open.com/lib/view/home/1323355910077" target="_blank">http://www.open-open.com/lib/view/home/1323355910077</a></p>