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There’s nothing worse than installing your favorite Java application, such as Minecraft, Maven, Jenkins, or Apache Pig, only to encounter a JAVA_HOME set to an invalid directory or unexplained JAVA_HOME error as soon as you start the program.
Well, no need to worry. Here is how to fix maximum common JAVA_HOME errors.
How to fix JAVA_HOME not found errors
It should be noted that there are no standardized JAVA_HOME error messages that users will encounter. There are many other tactics for logging a bug JAVA_HOME a certain one.
For example, one of the most common JAVA_HOME configuration issues is that the environment variable was never configured. Such a situation tends to cause the following error messages:
How to fix the problem discovered in JAVA_HOME?
Well, this is fixed in the Windows Environment Variable Editor, where you can load a new formula variable. If you’re familiar with the Windows operating formula, you deserve to be able to load the environment variable JAVA_HOME your configuration and point it to the install root of your JDK in a few minutes. Windows 10 settings look like this:
As discussed earlier, the JAVA_HOME variable will have to point to the root of installing a JDK, which means that a JDK will need to be installed. If not, you’d better go out and do it.
JAVA_HOME is configured as an invalid solution
The next non-unusual JAVA_HOME maximum error message is that JAVA_HOME is configured in an invalid directory. The error message is delightfully useful because it tells you unequivocally that the environment variable actually exists. And it also tells you that it doesn’t point to the right place, which is also helpful. All you want to do to fix this error is to modify the JAVA_HOME variable and point it to the correct directory.
The JAVA_HOME environment variable should point to the root of the JDK installation folder. It cannot point to a subdirectory of the JDK or a parent directory containing the JDK. Points directly to the JDK installation directory. If you encounter the JAVA_HOME invalid directory error, make sure the installation folder call and variable price match.
A simple way to see the actual price related to the JAVA_HOME variable is to simply echo its price on the command line. On Windows, type:
On an Ubuntu, Mac, or Linux machine, the command uses a dollar percentage sign:
Avoid the JDK bin directory
A very common developer error that leads to JAVA_HOME being set to an invalid directory is pointing JAVA_HOME to the bin subdirectory of the JDK installation. This is the directory you use to set the Windows PATH, but it’s wrong, wrong, wrong when you set JAVA_HOME. If you point JAVA_HOME to the bin directory, you’ll want to fix this problem.
This misconfiguration manifests itself with the following error messages:
Other things that can cause this error come with spelling errors or case-sensitive errors. If the JAVA_HOME variable is set to java_home, JAVAHOME, or Java_Home, a Unix, Linux, or Ubuntu script will have difficulty locating it. The same is going for the price attached to the variable JAVA_HOME.
JAVA_HOME points to JDK error
One of the most frustrating JAVA_HOME errors is that JAVA_HOME points to the JDK.
Here’s a sneak peek.
When you download a JDK distribution, some vendors also come with the Java Runtime Environment (JRE). And when the JAVA_HOME environment variable is set, other people point it to the JRE installation folder and not the JDK installation folder. When this happens, we see errors like:
For this issue, check if JRE and JDK are installed locally. If you do this, make sure that the JAVA_HOME variable does not point to the JRE.
Confusion JAVA_HOME and PATH
After downloading and installing the JDK, some other challenge may affect the developers. If you already have systems that have installed their own edition of the JDK, those systems would likely have added a reference to that JDK express in the Linux or Windows PATH settings. Some systems will run Java using the program’s availability through PATH first and then JAVA_HOME. If some other program has installed a JRE and placed the JRE’s bin directory in PATH, your efforts in JAVA_HOME are likely in vain.
However, you can fix this problem. First, check the PATH variable of Ubuntu or Windows and see if any other JRE or JDK directory has been loaded there. You may be surprised to learn that IBM or Oracle has already performed an installation without your knowledge. If so, dereference the PATH, load your own JDK bin directory, and restart all open command windows. Hopefully this will be the problem.
Of course, the configurations or settings that can cause JAVA_HOME errors never end. If you’ve discovered any artistic answers discussed here, please upload your expert reviews in the comments.
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