exportPattern("^\\.j")
export(is.jnull, .r2j, .rJava.base.path)
exportClasses(jobjRef, jarrayRef, jfloat, jlong, jbyte, jchar)
exportMethods(show, "$", "$<-", "==", "!=", names)
S3method(with, jobjRef)
S3method(within, jobjRef)
