rJava error on window os

Loading required package: rJava
Error : .onLoad failed in loadNamespace() for 'rJava', details:
call: fun(libname, pkgname)
error: JAVA_HOME cannot be determined from the Registry
In addition: Warning messages:
1: package ‘xlsx’ was built under R version 3.2.5
2: package ‘rJava’ was built under R version 3.2.5
Error: package ‘rJava’ could not be loaded


You could miss Java requirement on your system. see rJava

For xlsx reading and manipulation know that there is openxlsx and readxl and writexl; All of them does not have the java dependency.

One advice for next time: do not hesitate to provide some context and some friendly introduction too ! :wink: