Windows 11 Change Java_home – In Unix terminology, an environment variable is a string containing information such as drive name, path name, file name, etc. JAVA_HOME is an environment variable that addresses the directory where the Java Runtime Environment or Java Development Kit is installed on the system. To be specific, say if you have installed Java in the path
. By default, JAVA_Home is the instance used by Java-based applications such as Apache Tomcat and other application server tools of where Java is installed on the system.
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Windows 11 Change Java_home
These third-party applications use environment variables that point to the file on the JDK or JRE. In simple terms, it makes it easier for programs to find an executable folder like javac on the computer. If you are not using these third-party applications, it may not be mandatory for users to install JAVA_Home on your system. In this article, we will explain in detail how to set JAVA_HOME as an environment variable in Windows 10. Setting JAVA_HOME in Windows 11/10 Set the JAVA_HOME environment variable and update the system path.
How To Set Java_home On Windows
In Edit System Variables, specify the variable name as JAVA_HOME and the variable value as the path to your JDK directory.
Type echo %JAVA_HOME% and press Enter. This should print the directory on the JDK pointed to by JAVA_HOME. Instead, if you see a space, it means you failed to set the environment variable.
If not, it will print a message that javac is not recognized as an internal or external command. This means that the routing parameter is not set correctly. I went to Environment Variables in ‘System’ in the Control Panel and created two new variables, one for user variables and one for system variables. Both were named JAVA_HOME and both pointed to
Note: One must put the jdk path without /bin at the end (as widely suggested). such as C:Javajdk1.8.0_172 and C:Javajdk1.8.0_172bin!
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(assuming that’s where the JDK is installed – it’s not by default) – don’t include bin
If your app only runs when you’re logged in as the current user, put it in the user variable – if it needs to run for all users on your system, put it in the system variable.
Also to the path (also depends if you run it from user only or from all users including system)
Variable – still no success – and finding only “empty” Java entries in my registry, seems to be the end point of fixing a “wrong” Java runtime.
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To see the program I was trying to launch, to sniff where it was looking in the registry for Java (executable environment), I triumphantly discovered that it was looking in the 32-bit version of the registry entries. ,
Within that key you should find subkeys for different Java versions (previous and/or current). Click on the latest version’s subkey (for example, my subkey is currently 1.7.0_25). After clicking that subkey, you’ll see the registry string values on the right, and specifically,
. You need to change the values of these two values to reflect both the current directory and the jvm.dll file respectively.
Which do not exist on my machine. I had to update these to the current folder and file
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Again, this depends entirely on what version of Java (JDK and/or JRE) you have installed — 32 or 64 bit — and what kind of operating system you’re running — 32 or 64 – Stay tuned . Just know that they are reflected in different places in the file (ie
Now that I’ve updated these two registry values, my application runs without a hitch, no more hiccups or complaints about the missing Java runtime (which comes from the registry).
Under the System Variables Advanced tab, click Environment Variables, find PATH and click it. In the Edit window, change the PATH by adding the category location to the PATH value. If you don’t have a PATH item, you can choose to add a new variable and add PATH as the name and the class location as the value. Open the Command Prompt window again and run your Java code.
We need to distinguish between two environmental variables that are discussed here interchangeably. is a JAVA_HOME variable. The second is the path variable. Any process that references the JAVA_HOME variable is looking for the search path for the JDK, not the JRE. The JAVA_HOME variable is not used by the Java compiler itself. The translator is aware of his situation. The variable is to make it easier for other software to find the compiler. This variable is typically used by IDE software to compile and build programs from Java source code. In contrast, the Windows CMD interpreter and many other first- and third-party software refer to the PATH variable, not the JAVA_HOME variable.
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So for example, if you are not using any IDE software, and you just want to be able to compile from CMD, regardless of the current working directory, what you want is to set the path parameter correctly. . In your case you don’t even need the JAVA_HOME variable. Because CMD uses the path, not JAVA_HOME, to find the Java compiler.
Using any IDE software, the first thing you need to do is look at the documentation. It may require JAVA_HOME to be set, but may also use another variable name for the same purpose. Over the years, the de facto standard has been JAVA_HOME, but that may not always be the case.
If you want, in addition to IDE software, can compile from CMD, regardless of the current working directory, then in
You may also need to add the JDK search path to the PATH variable in the JAVA_HOME variable.
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If your problem is related to compiling Java, you may want to check the JAVA_HOME variable and path (where applicable). If your problem is related to running Java applications, you may want to check your router parameter.
Path parameters are widely used in all operating systems. Because it is defined by the system and because it is the default variable used to locate the JRE, Java applications almost never have problems running. Especially not on Windows where software installers usually install everything for you. But if you’re installing manually, it’s safest to skip the JAVA_HOME variable altogether and just use the PATH variable for everything, both JDK and JRE. Any recent version of IDE software should be able to pick it up and use it.
Symbolic links can provide another way to refer to the JDK search path by customizing one of the existing environment variables.
I’m not sure about earlier versions of Oracle/Sun JDK/JRE versions, but at least for jdk1.8.0_74 the installer adds the search path.
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This places it at the beginning of the string value. This folder contains symbolic links to java.exe, javaw.exe, and javaws.exe in the JRE directory.
So at least with the Java 8 JDK, and possibly the Java 8 JRE standalone, there is no need to set any environment variables for the JRE. As long as you use the installation package to install it. However, there may be differences depending on your Windows installation. Note that Oracle JRE comes with JDK.
If you ever find that your Java JDK configuration is using the wrong version of the compiler, or that it seems to work magically, without specifically defining it (without casting a spell), then you have your environment. There might be a symlink somewhere in a variable. . So you might want to check out Symlink.
After setting JAVA_HOME, close and reopen the command line. Sometimes changes are not reflected in cmd opened before JAVA_HOME was set.
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Use the search function to make sure your latest Java installation is listed; Make sure it is the one that is marked. It should be JRE not JDK.
Variable, you might want to put it right at the beginning of it. The problem I have is putting the Java folder at the end
File and it seems that the first one wins, when you have multiple files with the same name
If you want to create a portable Java and set the path before using Java, then create a batch file as I mentioned below.
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If you want to run this batch file when your computer starts, place the batch file shortcut in the Startup folder. The Windows 7 Startup folder is “C:UsersuserAppDataRoamingMicrosoftWindowsStart MenuProgramsStartup”.
After hours of working around most of the solutions here, the problem was solved for me by installing the 32-bit JDK.
Since the path variable contains these files, you might have a headache trying to figure out why java -version or javac -version points to the old JAVA_HOME: rename these files, underscoring the extension Take out, for example. And then you just need to create the JAVA_HOME variable, add it to the path variable (for example %JAVA_HOME%) and add the “bin” particle. Here you are
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