Cannot install library(xlsx) in R and look for an alternative

Question

I use R version 3.0.3. I was not able to install library(xlsx). Error message:

Loading required package: rJava
Error : .onLoad failed in loadNamespace() for 'rJava', details:
call: inDL(x, as.logical(local), as.logical(now), ...)
error: unable to load shared object 'C:/Program Files/R/R-3.0.3/library/rJava/libs/x64/rJava.dll':

LoadLibrary failure:  The specified module could not be found.

I then tried to install rjava on its own. Got the error message below:

library("rJava", lib.loc="C:/Program Files/R/R-3.0.3/library") Error : .onLoad failed in loadNamespace() for 'rJava', details: call: inDL(x, as.logical(local), as.logical(now), ...) error: unable to load shared object 'C:/Program Files/R/R-3.0.3/library/rJava/libs/x64/rJava.dll': LoadLibrary failure: The specified module could not be found.

Is there another way to load excel file in R?

Thanks,

Answer 1

This problem is generally caused by x86 vs x64 bit differences between the R session and the install Java edition. By default Java installs the x86 version and you have to search for the x64 version. if you look at the version of Java you have installed and then open your R session to the same if your using R studio you can click on Tools.GlobalOptions and then select the version you need. ;-)

Answer 2

Here are some possible solutions:

1. Install 64-bit version of Java. Here is the download link of Java.
2. Re-install rJava.

3. Manually set the directory of your Java location by setting it before loading the library

   Sys.setenv(JAVA_HOME="C:\\Program Files\\Java\\jre7") # for 64-bit version Sys.setenv(JAVA_HOME="C:\\Program Files (x86)\\Java\\jre7") # for 32-bit version library(rJava)

Source: here

Answer 3

For mac user, installing Java for OS X 2014-001 works for me https://support.apple.com/kb/DL1572?locale=en_US

Answer 4

See this and this. The last one is "The hard way: package xlsx" but it may still help you.

Answer 5

For Windows 10 Pro users 64 bit OS, use

Sys.setenv(JAVA_HOME="C:\\Program Files\\Java\\jre1.8.0_144")

Answer 6

For MAC OS X follow these steps in order:

1. Use this command in the Terminal: sudo R CMD javareconf

2. Restart BaseR and RStudio...

3. in RStudio console: install.packages("xlConnect")

4. in RStudio console: library(xlConnect)

5. in RStudio console: library(xlsx)

Problem solved!