When working with any command line (windows-cmd, git bash, ..), no Java commands are working.
I executed java -version and nothing happens. I can type again.
I have set my JAVA_HOME variable to C:/Users/myName/Java/jdk1.8
and I have also added %JAVA_HOME%\bin to my Path variable.
It's not, that the command does not get recognised. It's just that nothing happens.
I could probably run the java.exe command directly, but I wanna fix the env variable.
Can someone help?
Best regards
Try this (Windows):
Locate your JDK/JRE binary - Usually the path for your JDK/JRE bin (On Windows) is:
Your OS Drive(C or D etc):\Program Files\Java\jdk[version]\bin. After you've located it, Copy your path to your clipboard.
Search for "Environment Variables" on windows.
Create a new User variable name it (usually named "JAVA_HOME") and copy your path as a value.
Now in System variables locate a variable named "Path" and add the same value set in JAVA_HOME.
Close and then reopen the CMD.
If this solution does not work, reinstall java. You can uninstall through:
Control Panel -> Programs -> Under Programs and Features -> Uninstall a program.
After setting JAVA_HOME to C:\Program Files\Java\jdk1.8.0_171 and adding %JAVA_HOME%\bin to my path, I am still getting this error. I have checked that the path is correct multiple times and every solution online just says to add these two variables. Is there any other step to fix this?
I'm getting this error when trying to run "java -jar start.jar" for solr.
You have not added Java Location as the Path variable in your system. The Command Prompt or Powershell can only take you to the path/paths you have already specified.
Add "C:\Program Files\Java\jdk1.8.0_171\bin\" to the Path variable in your Advanced System Settings->Enviroment Variables->Path.
Make sure you run the command in a new DOS shell. If you are using the same one you ran the java command in before setting the path, it won't have the path update.
Don't type path manualy - choose path by [Browse directory] button.
Path looks the same but can be different (maybe encoding of signs)
When trying to check the current version of Java in which I am running, I received the error "java is not recognized as an internal or external command, operable program or batch file.".
I am running Windows 7 OS and have downloaded the latest JDK and felt I may have accidentally deleted the java from machine as before I was able to check the Java version using the command "java -version".
What software must I download to get Java working on my machine again?
EDIT:
I have managed to get Java running from my cmd again after ensuring all environment variables pointed to the current Java SDK.
You need to configure your environment variables, JAVA_HOME and PATH.
JAVA_HOME must contain the path to java, and you should add %JAVA_HOME%\bin to PATH
Alternatively, you can simply add to your PATH the whole path to the bin folder, without the JAVA_HOME variable, however, this makes a little more annoying when you need to have more than one java version on your machine (that way you only need to change JAVA_HOME and don't even bother with PATH)
For Windows 7:
Right click on My Computer
Select Properties
Select Advanced System Settings
Select the Advanced tab
Select Environment Variables
Select Path under System Variables
Click on the Edit button
In Variable value editor paste this at the start of the line
C:\Program Files\Java\jdk1.7.0_72\bin;
Click Ok then Ok again
Restart command prompt otherwise it won't see the change to the path variable
Type java -version in the command prompt.
Notes on Step 8:
The version of java in this may be different from the one used here -- this is only an example.
There will probably be other values in the path variable. It is really important that you don't delete what's already there. That's why the instructions say to paste the given value at the start of the line -- this means that you don't remove the existing value, you just put java before it. This also fixes any problems you'd be getting if an other version of java is also on the path.
Notes on Step 6:
This sets the path for the computer, not for the individual user. It may be that you're working on a computer which other developers also use, in which case you'd rather set the user variables, rather than the system variables
It sounds like you haven't added the right directory to your path.
First find out which directory you've installed Java in. For example, on my box it's in C:\Program Files\java\jdk1.7.0_111. Once you've found it, try running it directly. For example:
c:\> "c:\Program Files\java\jdk1.7.0_11\bin\java" -version
Once you've definitely got the right version, add the bin directory to your PATH environment variable.
Note that you don't need a JAVA_HOME environment variable, and haven't for some time. Some tools may use it - and if you're using one of those, then sure, set it - but if you're just using (say) Eclipse and the command-line java/javac tools, you're fine without it.
1 Yes, this has reminded me that I need to update...
Assume, Java/JDK is installed to the folder: C:\Program Files\Java:
Follow the steps:
Goto Control Panel → System → Advanced system settings → Advanced → Environment variables (Win+Pause/Break for System in Control Panel)
In the System variables section click on New…
In Variable name write: JAVA_HOME
In Variable value write: C:\Program Files\Java\bin, press OK:
In the System variables section double click on Path
Press New and write C:\Program Files\Java\bin, press OK:
In Environment variables window press OK
Restart/Run cmd.exe and write: java --version:
Search environment variables.
open the "edit the system environment variables".
then click on "environment variables".
Under "User variables" click on "Path" then "Edit".
Find your Java path and click "Edit".
then paste the path of your java installation folder.
Mostly you can find it on a path similar to this.
C:\Program Files\Java\jdk-12.0.2\bin
Then click OK.
now in the start menu, type cmd.
open the command prompt.
type
java -version
If you did it right,it should show something like this.
For me its start working after putting ,: in the starting of the system variable path :--
My solution was to put same value (path to JDK bin folder) in JAVA_HOME and Path
In my case, PATH was properly SET but PATHEXT has been cleared by me by mistake with .exe extension. That why window can't find java or anything .exe application from command prompt. Hope it can help someone.
This problem is on Windows 8.
First copy your Path of java jdk - e.g. C:\Program Files\Java\jdk1.7.0_51\bin.
Right on the My Computer Icon on the Desktop and Click Properties.
Select 'Advanced System Settings' in the left pane.
Under 'Advanced' tab, select 'Environment Variables' at the bottom.
In System Variables, select 'Path' Variable and edit it.
Paste the path and add a ';' at the end - e.g. C:\Program Files\Java\jdk1.7.0_51\bin;
I had the same problem. Just Install the exact bit of java as of your computer. If your PC is 64 bit then install 64 bit java. If it is 32 bit then vice versa :)
Not sure why, but in my case, the reason was because I was running Anaconda terminal instead of the CMD.
After I use CMD and update the path settings as mentioned by all comments above the issue solved on my side.
In case you are using a laptop and do not have the Pause\Break button.
For windows 10 users with 20h2 and above:
1 WIN → type "About your PC" → scroll at the bottom → Advanced system settings → Environment variables or WIN+R → shell:::{bb06c0e4-d293-4f75-8a90-cb05b6477eee} to open Classic System Properties → on the left side → Advanced system settings → Environment variables
Also for Windows 10 and Windows 7:
1 WIN → This PC → properties → Advanced system settings → Environment variables
In the System variables section click on New…
In Variable name write: JAVA_HOME
In Variable value write: C:\Program Files\Java\jdk-15.0.2\bin, press OK
I have taken steps 2-4 from Vijay Bhatt
There is a bit faster way to set a system variable. Run a console (terminal) as an administrator.
General command synax to add a new variable:
setx variableName value /M
In our example, we would need to set it as
setx JAVA_HOME "C:\Program Files\Java\jdk-15.0.2\bin" /M`
Like this:
/M - flag specifies to set the variable in the system environment.
After command execution, you should see the message:
SUCCESS: Specified value was saved.
How can I check that it is added?
Close your active terminal;
Open your favorite terminal;
Type java -version.
You should see something similar to this:
Notice:
User variables can be created w/o having a root (administrator privileges), whereas to create System variable; You need to open a console as a root.
I have used C:\Program Files\Java\jdk-15.0.2\bin as an example, in your case, it could be different from mine.
I opened a new command prompt in Windows 10 after updating the environment variables without closing the old one(To have my commands handy and lazy to type again)
Still, the new cmd window was referring to the previous version of Java.
Then once I closed the all cmd prompts that ran with admin privileges, the new java version was getting reflected.
I corrected my path variable but command prompt need to Restart otherwise, it won't be able to verify the change to the path variable. May be helpful for someone like me. so
"restart command prompt"
Restart the command prompt before checking the version of JDK installed. I spent 02 days on it until my problem resolved when I restarted the command prompt before checking javac - version, javac etc.
if you have cygwin installed in the Windows Box, or using UNIX Shell then
Issue bash#which java
This will tell you whether java is in your classpath or NOT.
If you have set the environment variables (JAVA_HOME and PATH) under user variables, command prompt (run as administrator) will not identify java. For that you need to set environment variables under system variables.
Try this:
System variables:
PATH = /bin folder of your jdk install
https://docs.oracle.com/javase/10/install/installation-jdk-and-jre-microsoft-windows-platforms.htm
Just some extra information for people that have still problems,
instead of editing the path variable of java, delete that part of the path(only the java!!)
and make a new variable pointing tpo the jdk/jre.
this seemed to work for me.
My Windows 8 command prompt doesn't see java anymore. I found that in C:\ProgramData\Oracle\Java\javapath located wrong symlink that I can't change. When I try change I got error:
Problem with Shortcut
The name 'C:\Program Files\Java\jre1.8.0_45\bin\javaw.exe' specified in the Target box is not valid. Make sure the path and file name are correct.
When I try to create shortcut I have message:
Windows can't create a shortcut here.
Do you want the shortcut to be placed on the desktop instead?
[Yes] [No]
How to solve this problem?
Here is how you solve this problem :
Delete the original symlinks. All the three of them, I think there
are three.
Do not create a shortcut. Shortcut and Symlinks are not same.
Open a command prompt in the same directory and create new Symlinks using the "mklink" command and point it to your JDK install.
If you use java from the command prompt chances are high that you need to have correct JAVA_HOME variable set as well. Some tools depend on it.
To do it - edit the system environment variables:
Add JAVA_HOME and point it to the install path of java version you want
you could also use symbolic link for the folder
In "Path" variable find "C:\ProgramData\Oracle\Java\javapath;" and replace it with %JAVA_HOME%\bin
First Uninstall the java from your system, after remove the oracle folder in C:\ProgramData. Then again reinstall the java. Next click on javac.bat in bin folder of jdk.After check with command prompt like, >javac it will display all the options.then it's working perfectly...
I think it's duplicate of
How to make a symlink in Java when running in Linux?
I'm trying to make my first app using Phonegap and I got this while running in command
C:\USERS\KTR\DESKTOP\PHONEGAP\LIB\ANDROID\BIN>create C:\Users\KTR\Desktop\Demoap
p com.example.Demoapp Demoapp
The JAVA_HOME environment variable is not set.
Set JAVA_HOME to an existing JRE directory.
Remember to also add JAVA_HOME to the PATH variable.
After updating system variables, open a new command window and retry.
Any help would be greatly appreciated
Thank you
You have to do two things to get it fixed.
Firstly go to My Computer right click open properties and open Advanced System Setting and then open Environment variables. Open the Path variable and insert a semicolon at the end and add the path of your bin folder of your jdk it will be something like C:/Program Files/Java/ Jdk X.Y/bin save and close it.
Secondly create a new system variable named JAVA_HOME and in its value write C:/Program Files/ Java/ Jdk X.Y save and close and now retry by writing the create command
P.S find the version number go to your java folder and copy those version number hopefully this will help
You need Java on your computer. See how to install and configure java http://docs.oracle.com/cd/E19509-01/820-3208/inst_cli_jdk_javahome_t/
Hope this will help