So I have tried the MSI installers found available from the Oracle support site (aka "MSI enterprise" installers), but unfortunately to no benefit.Īlso the MSI installers fail. The regular JRE/JDK installers (both on-line and off-line) silently fail without any error being shown. Not only: I just cannot even install JRE/JDK 1.8 from scratch! Since I upgraded my PC to Windows 10, I cannot update Java on my PC. 1.7K Training / Learning / Certification.165.3K Java EE (Java Enterprise Edition).7.9K Oracle Database Express Edition (XE).3.8K Java and JavaScript in the Database.If you’ve found any creative solutions not mentioned here, please add your expert insights to the comments. Of course, there is never any end to the configurations or settings that can trigger JAVA_HOME errors. If that’s the case, remove the reference to it from the PATH, add your own JDK’s \bin directory in there, and restart any open command windows. You might be surprised to find out that IBM or Oracle has at some prior time performed an install without your knowledge. First, check the Ubuntu or Windows PATH variable and look to see if any other JRE or JDK directory has been added to it. If another program has installed a JRE and put that JRE’s \bin directory on the PATH, your JAVA_HOME efforts may all be for naught. Some programs will run Java using the program’s availability through the PATH first, and JAVA_HOME second. If you already have programs that installed their own version of the JDK, those programs could have added a reference to that specific JDK in the Linux or Windows PATH setting. If you do, ensure that the JAVA_HOME variable is not pointing at the JRE.Īfter you’ve downloaded and installed the JDK, sometimes another problem can plague developers. To fix this issue, see if you have both a JRE and JDK installed locally. JAVA_HOME must point to a JDK not a JRE.When this happens, we see errors such as: And when the JAVA_HOME environment variable gets set, some people point it at the JRE installation folder and not the JDK installation folder. When you download a JDK distribution, some vendors include a Java Runtime Environment ( JRE) as well. Here’s a little bit of background on this one. One of the most frustrating JAVA_HOME errors is JAVA_HOME does not point to the JDK. The JAVA_HOME does not point to the JDK error The same thing goes for the value attached to the JAVA_HOME variable. If the JAVA_HOME variable is set as java_home, JAVAHOME or Java_Home, a Unix, Linux or Ubuntu script will have a hard time finding it. Other things that might trigger this error include spelling mistakes or case sensitivity errors. Java installation exists but JAVA_HOME has been set incorrectly.JAVA_HOME is set to an invalid directory.This misconfiguration also manifests itself with the following error messages: If you point JAVA_HOME at the bin directory, you’ll need to fix that. That’s the directory you use to configure the Windows PATH, but it is wrong, wrong, wrong when you set JAVA_HOME. One very common developer mistake that leads to the JAVA_HOME is set to an invalid directory error is pointing JAVA_HOME to the \bin sub-directory of the JDK installation. How to find JAVA_HOME in Mac or Ubuntu Linux computers. On an Ubuntu, Mac or Linux machine, the command uses a dollar sign instead of percentages: :-$ echo $JAVA_HOME If you encounter the JAVA_HOME invalid directory error, make sure the name of the installation folder and the value of the variable match.Īn easy way to see the actual value associated with the JAVA_HOME variable is to simply echo its value on the command line. It must point directly at the JDK installation directory itself. It cannot point to a sub-directory of the JDK, and it cannot point to a parent directory that contains the JDK. The JAVA_HOME environment variable must point to the root of the installation folder of a JDK. All you need to do to fix this error is edit the JAVA_HOME variable and point it to the correct directory. And, it also tells you it’s not pointing to the right place, which is helpful as well.
The error message is delightfully helpful, because it tells you in no uncertain terms the environment variable does in fact exist. The next most common JAVA_HOME error message is JAVA_HOME is set to an invalid directory. The JAVA_HOME is set to an invalid directory fix If one isn’t, then you better hop to it and get that done. As mentioned above, the JAVA_HOME variable must point to the installation root of a JDK, which means a JDK must actually be installed.
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