Dear all, I have had the same problem as stated before, even with SUN's jdk installed, and therefore enable to install any of 'iplots', 'rJava' or 'JGR' packages. It seemed however that the R CMD javareconf couldn't catch the path of my actual jdk. The following worked for me by forcing the JAVA_HOME environment variable: env JAVA_HOME=/my/path/to/my/very/own/sun/jdk1.6.0_17 /my/path/to/my/very/own/favourite/version/of/R-2.10.0/bin/R CMD javareconf and then, everything runs smoothly for the install of the previous packages. Hope this helps. Cheers, Leo. -- /*******************************************/ /* Leonor Palmeira, PhD */ /* */ /* +32 4 3664269 */ /* mlpalmeira at ulg.ac.be */ /* */ /* Bat. B43BIS Immunologie et vaccinologie */ /* Boulevard de Colonster 20 */ /* 4000 Liege, Belgique */ /*******************************************/ ################# Previous Message : It's almost always the same with failing builds: On 31 January 2009 at 11:41, Stefan Th. Gries wrote: [...] Java home path : /usr/lib/jvm/java-6-openjdk/jre [...] This clearly states that you have the JRE -- ie the __run-time__ environment. The Builds-Depends [1] are for the package openjdk-6-jdk -- ie the 'java development kit'. Install that, re-run 'sudo R CMD javareconf' and try again. Dirk [1] The second-best thing about having Debian packages, besides giving you the binaries, is that they give you the essentially fail-safe recipe for building them, including the list of ingredients encoded in the Build-Depends: line of debian/control. You get that via the .diff.gz -- Three out of two people have difficulties with fractions.