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You know Java, and now You want to use semantic technologies or build [[semantic web]] applications? No problem. The'''semweb4j''' project gives you simple libraries to do complicated things with Java and RDF. Very little semantic web knowledge is required. === Components & Download === * [[RDF2Go]] - a unified API to access [[RDF]] Models * [[RDFReactor]] - generates convenient Java classes from an [[RDF Schema]]. The instances of the generated classes are live views on the RDF model. All get/set/update-calls are directly reflected as changed triples in the RDF model. You can also do SPARQL queries. For [[Maven]] users: * Our release-repository lives here: http://semweb4j.org/repo . * You can browse all releases, ".dist" are complete distributions === See also === * A [http://www.aifb.uni-karlsruhe.de/Publikationen/showPublikation_english?publ_id=1073 paper] on semweb4j * [[Semweb4j/Developing|Developing Semweb4j]] == Lessons == === Lesson 1: [[Semweb4j/models|RDF Models]] === * What is RDF? * How to configure and use a triple store * Which triple store to use * Add and remove triples * Dumping a models content to System.out === Lesson 2: [[Semweb4j/filesQueries|Files and queries]] === * Serialization: Read and write RDF files in different syntaxes * Finding: Triple pattern queries * Querying: SPARQL queries ** SELECT, CONSTRUCT, DESCRIBE and ASK. === Lesson 3: [[Semweb4j/multipleModels|Multiple models]] === * Using mutltiple models * What are Named Graphs? * How to merge models & more === Lesson 4: [[Semweb4j/rdfs|RDF Schema]] === * What is RDF Schema? * Support for RDF Schema in semweb4j * Finding and using an RDF Schema <!-- * XML Schema types * Documenting RDF Schemas ** @@ SchemaDoc --> === Lesson 5: [[Semweb4j/rdfreactor|Mapping RDF to Java]] === * Generate Java classes from an RDF Schema with RDFReactor <!-- * What can you do with the generated code? ** using ** hacking * Fine-tune the generations process --> [[Category:Semantic Web tool]]
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