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. The GeoTools library data structures are based on Open Geospatial Consortium (OGC) specifications.
GeoTools is used by a number of projects including web services, command line tools and desktop applications.
Definition of interfaces for key spatial concepts and data structures
A clean data access API supporting feature access, transaction support and locking between threads
A stateless, low memory renderer, particularly useful in server-side environments.
Powerful schema assisted parsing technology using XML Schema to bind to GML content
The parsing / encoding technology is provided with bindings for many OGC standards including GML, Filter, KML, SLD, and SE.
GeoTools Plugins: open plug-in system allowing you to teach the library additional formats
Provide additional capabilities built using the spatial facilities of the core library.
Extensions provide graph and networking support (for finding the shortest path), validation, a web map server client, bindings for XML parsing and encoding and color brewer!
GeoTools also operates as part of a wider community with a staging area used to foster new talent and promote experimentation.
Some highlights are swing support (used in our tutorials!), swt, local and web process support, additional symbology, additional data formats, generation of grids and a couple of implementations of ISO Geometry.
raster formats and data access
arcsde, arcgrid, geotiff, grassraster, gtopo30, image (JPEG, TIFF, GIF, PNG), imageio-ext-gdal, imagemosaic, imagepyramid, JP2K, matlab
Database “jdbc-ng” support
db2, h2, mysql, oracle, postgis, spatialite, sqlserver
Vector formats and data access
app-schema, arcsde, csv, dxf, edigeo, excel, geojson, org, property, shapefile, wfs
Java data structures and bindings provided for the following: xsd-core (xml simple types), fes, filter, gml2, gml3, kml, ows, sld, wcs, wfs, wms, wps, vpf.
Additional Geometry, Filter and Style parser/encoders available for DOM and SAX applications.
Support of numerous Open Geospatial Consortium (OGC) standards: