.onLoad failed in loadNamespace() for 'rJava [duplicate]

Question

I am running Win 10 64-bi with Java version 1.8.0.221. when loading xlsx package I am getting an error in R Studio with version 3.5.2 - also 64-bit. The error is in loading rJava. any thoughts on how can I fix this? I am stuck and can't move forward. Thanks.

trying URL 'https://mran.microsoft.com/snapshot/2019-02-01/bin/windows/contrib/3.5/xlsx_0.6.1.zip'
Content type 'application/zip' length 458979 bytes (448 KB)
downloaded 448 KB

package ‘xlsxjars’ successfully unpacked and MD5 sums checked
package ‘xlsx’ successfully unpacked and MD5 sums checked

The downloaded binary packages are in
    C:\Users\<user>\AppData\Local\Temp\RtmpIZaYPe\downloaded_packages
> library(xlsx)
Error: package or namespace load failed for ‘xlsx’:
 .onLoad failed in loadNamespace() for 'rJava', details:
  call: inDL(x, as.logical(local), as.logical(now), ...)
  error: unable to load shared object 'C:/Users/<user>/Documents/R/win-library/3.5/rJava/libs/x64/rJava.dll':
  LoadLibrary failure:  The specified module could not be found.

Most questions are older and hence may not be relevant

user3150378
– user3150378

2019-10-11 19:56:20 +00:00
Commented Oct 11, 2019 at 19:56 — user3150378
– user3150378, Commented Oct 11, 2019 at 19:56

user3150378 · Accepted Answer · 2019-10-11 19:58:16Z

1

I added the following and then rJava loaded without error.

Sys.setenv(JAVA_HOME='C:\\Program Files\\Java\\jre1.8.0_221')

answered Oct 11, 2019 at 19:58

user3150378

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3 Comments

r2evans Over a year ago

Perhaps you should revise or delete your comment where you said "Most questions are older and hence may not be relevant", since your answer here is exactly (version/release number notwithstanding) what is in the other question.

NelsonGon Over a year ago

This will only work for the current session. Maybe edit Rprofile?!

user3150378 Over a year ago

Yes, I added this to .RProfile. As for older versions, I was not sure if there was a change due to package and R version changes and wanted to make sure to find the latest info.

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