Lucene is a Java full-text search engine. Lucene is not a complete application, but rather a code library and API that can easily be used to add search capabilities to applications.

Spatial4j is a general purpose spatial / geospatial ASL licensed open-source Java library. It’s core capabilities are 3-fold: to provide common geospatially-aware shapes, to provide distance calculations and other math, and to read and write the shapes to strings.

JAR File Size and Download Location:

File name: spatial4j.jar, spatial4j-0.3.jar
File size: 69290 bytes
Date modified: 31-Aug-2012
Download: Apache Lucene

Manifest of the JAR:

Archiver-Version: Plexus Archiver
Built-By: dsmiley
Build-Jdk: 1.7.0_06

List of Classes in the JAR:

com/spatial4j/core/context/jts/JtsSpatialContext
com/spatial4j/core/context/jts/JtsSpatialContextFactory
com/spatial4j/core/context/SpatialContext
com/spatial4j/core/context/SpatialContextFactory
com/spatial4j/core/distance/AbstractDistanceCalculator
com/spatial4j/core/distance/CartesianDistCalc
com/spatial4j/core/distance/DistanceCalculator
com/spatial4j/core/distance/DistanceUtils
com/spatial4j/core/distance/GeodesicSphereDistCalc
com/spatial4j/core/exception/InvalidShapeException
com/spatial4j/core/io/GeohashUtils
com/spatial4j/core/io/geonames/Geoname
com/spatial4j/core/io/geonames/GeonamesReader
com/spatial4j/core/io/JtsShapeReadWriter
com/spatial4j/core/io/LineReader
com/spatial4j/core/io/ParseUtils
com/spatial4j/core/io/sample/SampleData
com/spatial4j/core/io/sample/SampleDataReader
com/spatial4j/core/io/sample/SampleDataWriter
com/spatial4j/core/io/ShapeReadWriter
com/spatial4j/core/shape/Circle
com/spatial4j/core/shape/impl/CircleImpl
com/spatial4j/core/shape/impl/GeoCircle
com/spatial4j/core/shape/impl/PointImpl
com/spatial4j/core/shape/impl/RectangleImpl
com/spatial4j/core/shape/jts/JtsGeometry
com/spatial4j/core/shape/jts/JtsPoint
com/spatial4j/core/shape/MultiShape
com/spatial4j/core/shape/Point
com/spatial4j/core/shape/Rectangle
com/spatial4j/core/shape/Shape
com/spatial4j/core/shape/SpatialRelation