用树形控件编写的拓扑图，只要输入子节点和父节点的关系，即可显示出拓扑图。-Written with tree control topology, as long as the input node and parent s relationship, can show the topology.

java拓扑结构，一些显示方面的东西，可以运用于部门 人员关系。-java topology, some display side of things, can be applied to the department staff relations.