JAVA Support for Semantic Web

Question

Do java support semantic webservices.Any apis are available for that..

Answer 1

There are no standard Java APIs for semantic web; e.g. triple store access, querying, etc. You basically have two alternatives for "doing semantic web stuff" in Java:

1. You can talk to an off-the-shelf SPARQL server using a standardized query language over HTTP. The problem is that SPARQL doesn't provide a way to add, update or delete triples.
2. You code your application to use one of a number of (mostly incompatible) Java triple store APIs. I use Sesame and Jena which are both open source, but there are a number of alternatives, including commercial offerings.

IMO, it is a crying shame that W3C or Sun has not come up with a standard Java API for creating, updating, deleting and querying RDF / triples.

Answer 2

Take a look at KASWS.

Answer 3

Right now count of stable API for semantic web service is small.

Some API can be useful i think :

- Apache Jena

Apache Clerezza

Some info about clerezza :

• OSGi-based Platform
• RESTful Web Service Framework
• JSR 223 compatible
• An API to access RDF Graph
• SPARQL Support

Apache Stanbol

• has RESTful interface

• LServices that add semantic information to “non-semantic” pieces of content.

  • Another interesting opensource API is Linked Media Framework

Answer 4

I'd add Apache Marmotta to the list, a spin-out project from Linked media Framework.