What Java version does JCows require?JCows require Java 5 to run. Since JCows needs to invoke the Java Compiler you need to have Java Development Kit installed.
You can download The JDK 5 from Sun's Homepage.
Is JCows still being developed?If you intend to donate, yes ;-)...
Seriously, we mean to keep the project under development. Of course it depends on how popular the project becomes too. At the moment we both don't find the time but we hope to eventually resume development. There are still some features we would like to see in JCows (and a handful of bugs too...) that should keep us motivated.