See: Description
Class  Description 

Depth 
A Depth object records the topological depth of the sides
of an Edge for up to two Geometries.

DirectedEdge  
DirectedEdgeStar 
A DirectedEdgeStar is an ordered list of outgoing DirectedEdges around a node.

Edge  
EdgeEnd 
Models the end of an edge incident on a node.

EdgeEndStar 
A EdgeEndStar is an ordered list of EdgeEnds around a node.

EdgeIntersection 
Represents a point on an
edge which intersects with another edge.

EdgeIntersectionList 
A list of edge intersections along an
Edge . 
EdgeList 
A EdgeList is a list of Edges.

EdgeNodingValidator 
Validates that a collection of
Edge s is correctly noded. 
EdgeRing  
GeometryGraph 
A GeometryGraph is a graph that models a given Geometry

GraphComponent 
A GraphComponent is the parent class for the objects'
that form a graph.

Label 
A
Label indicates the topological relationship of a component
of a topology graph to a given Geometry . 
Node  
NodeFactory  
NodeMap 
A map of nodes, indexed by the coordinate of the node

PlanarGraph 
The computation of the
IntersectionMatrix relies on the use of a structure
called a "topology graph". 
Position 
A Position indicates the position of a Location relative to a graph component
(Node, Edge, or Area).

Quadrant 
Utility functions for working with quadrants, which are numbered as follows:

TopologyLocation 
A TopologyLocation is the labelling of a
GraphComponent's topological relationship to a single Geometry.

The Java Topology Suite (JTS) is a Java API that implements a core set of spatial data operations using an explicit precision model and robust geometric algorithms. JTS is intended to be used in the development of applications that support the validation, cleaning, integration and querying of spatial datasets.
JTS attempts to implement the OpenGIS Simple Features Specification (SFS) as accurately as possible. In some cases the SFS is unclear or omits a specification; in this case JTS attempts to choose a reasonable and consistent alternative. Differences from and elaborations of the SFS are documented in this specification.
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