gt-render

This is most likely the reason you are interested in the GeoTools library - this module finally lets you draw a map using all that data you set up.

Supports the rendering of geospatial information using the Java2D API.

 参考1：https://docs.geotools.org/latest/userguide/library/render/index.html

其它：https://www.cnblogs.com/2008nmj/p/15841709.html https://www.cnblogs.com/2008nmj/p/15867482.html