To cite package ‘rJava’ in publications use:

  Urbanek S (2026). _rJava: Low-Level R to Java Interface_. R package
  version 1.0-14, <https://CRAN.R-project.org/package=rJava>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {rJava: Low-Level R to Java Interface},
    author = {Simon Urbanek},
    year = {2026},
    note = {R package version 1.0-14},
    url = {https://CRAN.R-project.org/package=rJava},
  }