UHE Neutrino Simulator (the Java-based Ultra-high energy Lepton Integral Transporter)
The original website http://www.ppl.phys.chiba-u.jp/JULIeT/
The interaction table data files are needed to run JULIeT. The bundle of the data files together with the pre-compiled class files are provided in the form of jar file at the website above.
will get you the jar bundle file. Extract the class files as well as the interaction table files by running jar -xv JULIeTclassFiles.jar.