- JDK: Cayenne, including GUI tools, is written in 100% Java, and runs on any Java-compatible platform. Required JDK version is 1.4 or higher. If your deployment environment uses JDK 1.3, you can still use Cayenne, just downgrade to version 1.1.x - the last version compatible with JDK 1.3.
- JDBC Driver: You will need a JDBC driver to access the database. Information about various drivers and database-specific configuration is provided on the Database Support page.
- Third-party Libraries: Depending on the application nature, Cayenne may optionally require a few third-party open source packages. See JAR Files and Dependencies page for details.
Installing Cayenne is simple - just download and unpack the distribution. Download page is located here: http://incubator.apache.org/cayenne/download.html. Select a distribution matching your target platform (cross-platform version, as the name implies, works on any OS that has Java).