I tried adding my jars to classpath using #!/usr/bin/Rscript library(rJava) #.jclassPath() .jinit() .jaddClassPath(dir("target\\mavenLib", full.names=TRUE )) .jclassPath() but got in .jnew("com/algoTree/ClientElasticSearch/ElasticSearchLoader") : java.lang.ClassNotFoundException then I tried giving the absolute path .jaddClassPath(dir("E:\\Documents and Settings\\Admin\\My Documents\\Downloads\\OG-R\\target\\mavenLib", full.names=TRUE )) then I got in .jcall(obj, "[[Ljava/lang/String;", "getAllContentFromKeyword", : java.lang.NullPointerException I wonder how this happens because in terminal both are working fine !!! .Any idea on how to solve this .Appreciate any help. Thanks -- View this message in context: http://r.789695.n4.nabble.com/Class-Not-found-exception-from-RCosole-tp4650930.html Sent from the R help mailing list archive at Nabble.com.