Everybody who is interested in using constraint programming tools in Java may now download JSR-331 v. 1.0.0 from http://openrules.com/jsr331. You may download JSR-331 executables and sources, try multiple examples of constraint satisfaction and optimization problems, and start writing CP-based engines for your own problems. The latest release has been delivered to the JCP for the final approval.
To install JSR-331, simply download, unzip, and import the Eclipse project “org.jcp.jsr331.tck” “to your Eclipse workspace. JSR-331 v.1.0.0 comes with 3 working implementations based on open source CP solvers: Choco, Constrainer, and JaCoP. One more implementation is on the way. All included software comes with sources and available under the terms of open source licenses. You may look at the latest JSR-331 User Manual. There is a Google support group for all your technical questions. Your comments and suggestions are very welcome.