\name{printLookup}
\alias{printLookup}
\title{Print R-Java data type mapping information}
\description{
\code{printLookup} prints the R-Java data type mapping information.
}
\usage{
printLookup(lookup, all = TRUE)
}
\arguments{
  \item{lookup}{environment, the environment contains the R-Java data type mapping information. It is generated by \code{\link{generateDataMap}}. }
  \item{all}{logical, FALSE to just print the mappings for user-defined data types, TRUE to print the mappings for basic R data types as well.}
}
\author{Nianhua Li}
\examples{
# please try the example under examples/s4Map
}
\keyword{interface}