In this example, I’ll explain how to solve the problems when trying load an R package due to rJava.įor this, you have to download and install the 64-bit version of Java on this page: Download Java 64-bit version for Windows. Hence, it is necessary to manually install the 64-bit version.Įxample 2: Fixing the Error: JAVA_HOME cannot be determined from the Registry Note that the Java download page suggests the 32-bit version by default. Earlier versions do not work Mirrors are not up-to-date, so go to the source at Note the advice there Please use install.packages('rJava',' to install.
You may have installed a 32-bit version of Java or you might not have installed Java at all. During JDK install, Java menu items are added to the Windows Start menu to provide easy access to Reference Documentation, which is online documentation web page. Go to the Java website to download the installer of JRE 1. To save the file for later installation, click Save. The reason for this usually is that you are using a 64-bit version of R, but not a 64-bit version of Java. This article will guide you to install Java Runtime Environment (JRE) 1.8 on your Windows computer. The File Download dialog box appears prompting you to run or save the download file. So why does the error message “JAVA_HOME cannot be determined from the Registry” occur when we are trying to install the rJava package? > install.packages('rJava') - Use the CRAN mirror for this connection phase. R tries to install the rJava package as well, when we are installing the xlsx package. 64-bit Windows in installing rJava and Rwordseg times errors as well as solutions, the detailed procedure is as follows. However, this problem does not occur because of the xlsx package, but because of the rJava package. # Failed with error: 'package 'rJava' could not be loaded'Īs you can see, the error “JAVA_HOME cannot be determined from the Registry” was returned to the RStudio console after installing and loading the xlsx package. # error: JAVA_HOME cannot be determined from the Registry
#Install rjava windows Offline
Hence, I’d suggest you to download the offline package manually and try installing the same. onLoad failed in loadNamespace() for 'rJava', details: So make sure you’re testing for java using the appropriate version of IE or better install both 32-bit and 64-bit version of Java. After installing the 64-bit version of Java, we have to install and load the rJava package (or as in our example the xlsx package) again: install.packages('xlsx') Install xlsx package library ('xlsx') Load xlsx package. Install.packages("xlsx") # Install & load xlsx For this, you have to download and install the 64-bit version of Java on this page: Download Java 64-bit version for Windows. onLoad failed in loadNamespace() for 'rJava', details: # call: fun(libname, pkgname) # error: JAVA_HOME cannot be determined from the Registry # Failed with error: 'package 'rJava' could not be loaded' Library ( "xlsx" ) # Loading required package: xlsx # Loading required package: xlsxjars # Loading required package: rJava # Error.
packages ( "xlsx" ) # Install & load xlsx
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