这是Geomorphometry上的，这个软件的功能介绍如下：
GeoTools is an open source (LGPL) Java code library which provides standards compliant methods for the manipulation of geospatial data, for example to implement Geographic Information Systems (GIS). Geotools is used by a number of projects including Web Feature Servers, Web Map Servers, and desktop applications. Programmers wishing to use GeoTools in their own applications can get more information from the Use page and the User Guide.

GEOTOOLS main web page: http://geotools.codehaus.org/

The GeoTools 2.3.0 release (it was created on December 1st, 2006) is
available for download at he address below:
http://geotools.codehaus.org/Downloads