源码要求为至少5个C或Java源码或其他好源码或编程学习资料，质量越高得到的下载个-Source requirements for at least 5 C or Java source code or programming or other good learning materials, the higher the quality of the download a

java可以直接调用这个类实现画图功能，但是使用这个类的前提是你的电脑已经装了GraphViz软件，你可以在http://www.graphviz.org/Gallery.php下载windows版本，装完后，找到dot.exe所在的路径，-java can call this class implements the drawing functions, but only if the use of this class is that your computer has installed