JBoss Cache requires Java 5.0 (or newer).

However, there is a way to build JBoss Cache as a Java 1.4.x compatible binary using JBossRetro to retroweave the Java 5.0 binaries. However, Red Hat Inc. does not offer professional support around the retroweaved binary at this time and the Java 1.4.x compatible binary is not in the binary distribution. See this wiki page for details on building the retroweaved binary for yourself.

In addition to Java 5.0, at a minimum, JBoss Cache has dependencies on JGroups , and Apache's commons-logging . JBoss Cache ships with all dependent libraries necessary to run out of the box.