inst/doc/rJavaEnv-step-by-step.R

In rJavaEnv: 'Java' Environments for R Projects

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library(rJavaEnv)


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project_dir <- tempdir()
setwd(project_dir)


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#| eval: false
## options(rJavaEnv.cache_path = "/path/to/your/desired/cache/folder")


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#| include: false
options(rJavaEnv.cache_path = tempdir()) # does that fix the error on r-oldrel-macos-arm64 and r-oldrel-macos-x86_64?


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getOption("rJavaEnv.cache_path")


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java_17_distr <- java_download(version = 17)
java_17_distr


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java_8_linux64_distr <- java_download(
  version = 8,
  platform = "linux",
  arch = "x64"
)


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java_list("distrib")


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java_clear("distrib")


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java_clear("distrib", delete_all = TRUE)


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java_8_distr <- java_download(8)
java_17_distr <- java_download(17)
java_22_distr <- java_download(22)


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java_install(
  java_distrib_path = java_17_distr,
  autoset_java_env = FALSE)


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java_home <- java_unpack(java_distr_path = java_8_distr)


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java_install(
  java_distrib_path = java_8_distr,
  autoset_java_env = TRUE)


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java_list("project")


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java_check_version_cmd()


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java_list("project")


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java_home_17 <- java_list("project", output = "vector")[1]
java_home_17


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java_env_set(where = "both", java_home = java_home_17)


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java_check_version_cmd() # for pacakges that use Java via commandline, like opentripplanner
java_check_version_rjava() # for packages that use Java via `rJava`, like r5r


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java_clear("project", delete_all = TRUE)
java_clear("installed", delete_all = TRUE)
java_clear("distrib", delete_all = TRUE)


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java_env_unset()