search for Java projects. The examples extracted from open source search engine understands the semantics of Java, so the search yields more accurate results than a text search. The site also provides the ability to rate examples
Searching all methods, classes, and packages of J2SE, J2EE, and J2ME. Anyone that has an example of the Java at the Doc level can entry their 2 cents worth.
Large-Scale Open-Source Web Search YaCy is a scalable personal web crawler and web search engine. One YaCy installation can store more than 10 million documents, but in a community of search peers YaCy can provide a search index of unlimited size.
Aperture is a Java framework for extracting and querying full-text content and metadata from various information systems (e.g. file systems, web sites, mail boxes) and the file formats (e.g. documents, images) occurring in these systems.