XZ for Java 1.1 is available at <http://tukaani.org/xz/java.html> and in the Maven Central (groupId = org.tukaani, artifactId = xz). Here is an extract from the NEWS file:
* The depthLimit argument in the LZMA2Options constructor is no longer ignored. * LZMA2Options() can no longer throw UnsupportedOptionsException. * Fix bugs in the preset dictionary support in the LZMA2 encoder. -- Lasse Collin | IRC: Larhzu @ IRCnet & Freenode