I'm using PowerShell on Windows 2012 server, and I deleted all the java commands from System32, reinstalled jdk, set JAVA_HOME and Path to point at the new installation. And I still get the following error:
java : The term 'java' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1
+ java
+ ~~~~
+ CategoryInfo : ObjectNotFound: (java:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
I deleted all the java commands from System32
This is why Windows can't find java.exe. The default JRE installation puts Java into your System32 directory, which is where CMD and Powershell usually find it.
You can fix this for your system by running the following from an admin shell. This creates a copy of java.exe in your Windows directory. (You can also probably get away with a soft link)
fsutil hardlink create (join-path $env:SystemRoot 'java.exe') (join-path $env:JAVA_HOME 'bin\java.exe')
If you don't want to modify your Windows directory (or can't), you can always set an alias to use in your Powershell session.
Set-Alias -Name java -Value (Join-Path $env:JAVA_HOME 'bin\java.exe')
Run that line in your current session and running java from the command line should work correctly. Add it to your $PROFILE if you want it to work from all future Powershell sessions.
PATH needs to point at the bin/ directory within the JDK/JRE installation
JAVA_HOME needs to point to the top level directory of the JDK/JRE
I suspect you're setting PATH to be the JDK/JRE folder which doesn't contain the java executable, as it's in the bin/ subdirectory...
1) My default JAVA_HOME is:
echo %JAVA_HOME%
D:\Program Files\Java\jdk1.7.0_25
<= The installer automagically configures this when you install a JRE
2) My default %PATH% does not include any Java
3) I'm able to run (but not compile) Java from a Windows command prompt:
java -version
java version "1.7.0_51"
Java(TM) SE Runtime Environment (build 1.7.0_51-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.51-b03, mixed mode)
4) I'm also able to do exactly the same from inside Powershell (or from a .ps1 Powershell script):
PS D:\temp> java -version
java version "1.7.0_51"
Java(TM) SE Runtime Environment (build 1.7.0_51-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.51-b03, mixed mode)
Related
I am trying to package a jar file into an executable file using the jpackage tool in Java, but the command is not recognized in the command prompt using Windows 10 and Java version:
> java --version
java 17.0.1 2021-10-19 LTS
Java(TM) SE Runtime Environment (build 17.0.1+12-LTS-39)
Java HotSpot(TM) 64-Bit Server VM (build 17.0.1+12-LTS-39, mixed mode, sharing)
I have the full JDK installed and the command javac is recognized.
I checked my computer with the "where java javac jpackage" command and it only found the first two in the CommonFiles folder.
I looked in the folder path "ProgramFiles\Java\jdk-17.0.1\jmods" and both the "jdk.jlink.jmod" and "jdk.jpackage.jmod" files are present.
Can someone please help me figure out why the tool isn't recognized by Windows?
I found the issue to be the way my Environment Variables were set up for Java. To fix my problem, I went into the JAVA_HOME variable and changed the entry from
C:\ProgramFiles\Java\jdk-17.0.1\lib
to
C:\ProgramFiles\Java\jdk-17.0.1
Next I updated the path variable to include "%JAVA_HOME%\bin". Before I had it listed as C:\ProgramFiles\Java\jdk-17.0.1\bin. Both of these changes were made under the System variables using the "Edit" button. I want to thank dave_thompson_085 for pointing me in the right direction.
I've always used Google2SRT, a light software to download subtitles from Youtube. Now it no longer works: "Startup Error: Failed to find Java VM".
I have Java installed, I have Netbeans installed and working, I have never had any Java related issues.
I've tried reinstalling everything, I've tried creating a JAVA_HOME and JRE_HOME System variable and pointing it to "C:\Program Files\Java\jre1.8.0_191" according to this tutorial: https://confluence.atlassian.com/doc/setting-the-java_home-variable-in-windows-8895.html
It felt odd because I didn't even had this environment variable previously. I have no idea what's the issue.
I've tried uninstalling Netbeans and other programming tools as well.
I'm on Windows 7 x64.
java -debug -version > "%userprofile%\desktop\javaDebug.log" 2>&1 returns:
java version "1.8.0_191"
Java(TM) SE Runtime Environment (build 1.8.0_191-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.191-b12, mixed mode)
I have also tried setting maximum heap size in _JAVA_OPTIONS
System Variables
Just go to the install dir (e.g. C:\Program Files (x86)\Google2SRT), open a cmd.exe, cd to the above folder and type java -jar Google2SRT.jar. You don't need the .exe
This should work, provided you have java installed. Check by typing java -version in the cmd.
Have installed java 8 and
Java -version
yields
java version "1.8.0_45"
Java(TM) SE Runtime Environment (build 1.8.0_45-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)
Having a AfterInstall script under hooks which simply has
cd $HOME/workspace
mvn clean install
AWS codedeploy is failing with following error
{\"message\":\"Script at specified location: scripts/start failed with exit code 1\",\"log\":\"LifecycleEvent - AfterInstall\\nScript - scripts/start\\n[stderr]Error: JAVA_HOME is not defined correctly.\\n[stderr] We cannot execute /usr/lib/jvm/jre/bin/java\\n\"}"}
echo $JAVA_HOME gives
/usr/java/jdk1.8.0_45/jre
Have also tried setting JAVA_HOME to
/usr/java/jdk1.8.0_45
When i try mvn clean install directly in the workspace it was able to pickup the Java correctly. Any idea what went wrong in code deploy?
hooks:
BeforeInstall:
- location: scripts/pre_processing
AfterInstall:
- location: scripts/start
Codedeploy seems works fine, it just run whatever script you gave.
This could be a problem of JAVA_HOME not accessible by current running user.
If you don't specify the runas parameter inside the appSpec, the scripts will run under root privilege by default(since the host agent starts with root privilege).
If this is the case, the possible workaround is either make JAVA_HOME accessible by root, or specify runas inside the appSpec for the AfterInstall script.
When I open eclipse in Ubuntu it is showing the following error:
A Java Runtime Environment (JRE) or Java Development Kit (JDK)
must be available in order to run Eclipse. No Java virtual machine
was found after searching the following locations:
/opt/eclipse/jre/bin/java
java in your current PATH
These are the Environment variables I set in .bashrc file:
JAVA_HOME=/opt/jdk1.7.0
PATH=$PATH:$HOME/bin:$JAVA_HOME/bin
JRE_HOME=/opt/jdk1.7.0
PATH=$PATH:$HOME/bin:$JRE_HOME/bin
export JAVA_HOME
export JRE_HOME
export PATH
I have also checked in terminal:
asr#asr-desktop:~$ java -version
java version "1.7.0"
Java(TM) SE Runtime Environment (build 1.7.0-b147)
Java HotSpot(TM) Server VM (build 21.0-b17, mixed mode)
asr#asr-desktop:~$ which java
/opt/jdk1.7.0/bin/java
asr#asr-desktop:~$ echo $JAVA_HOME
/opt/jdk1.7.0
asr#asr-desktop:~$ echo $PATH
/opt/softwares/apache-ant-1.7.1/bin:/usr/lib/lightdm/lightdm:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/home/vidyayugpc/bin:/opt/jdk1.7.0/bin:/home/vidyayugpc/bin:/opt/jdk1.7.0/bin
The eclipse is opening via command prompt only, I have tried to specify JVM location in eclipse.ini file by adding the below line
-vm
/opt/jdk1.7.0/bin/java
But its not running again showing the same error jvm is not found.Can any one help me here?
This work for me edit the eclipse.ini using any text editor and change your -vm path to real path of your JDK
-vm /opt/jdk1.6.0/bin/
You should set the Environment variables in /etc/profile or /etc/profile.d/ and reboot.
I don't know exactly, your path seems fine
If you set up the -vm parameter you have to point to the bin folder, please try this:
-vm /opt/jdk1.7.0/bin/
I want to run solR in mac OSX 10.9.1. So I installed JRE latest version. Then, I downloaded solR and expanded the folder. But when I try to run this jar file in example folder, I get this msg "no java runtime present", mentioned below.
Do I need to add JAVA_HOME env variable like we do in windows? If so, please tell me how.
Ananyas-MacBook-Pro:~ ananya$ /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/bin/java -version
java version "1.7.0_51"
Java(TM) SE Runtime Environment (build
1.7.0_51-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.51-b03, mixed mode)
Ananyas-MacBook-Pro:~ ananya$ cd /Users/ananya/Desktop/VT\ study/solr-4.6.1/example
Ananyas-MacBook-Pro:example ananya$ java -jar start.jar
No Java runtime present, requesting install.
Ananyas-MacBook-Pro:example ananya$
Thanks.
"Do I need to add JAVA_HOME env variable like we do in windows?"
Test to see if/where Java is on your path in a terminal:
echo $JAVA_HOME
If the path to Java is wrong or missing you can add and Environmental Variable to ~/.bash_profile like so
JAVA_HOME=/usr/bin/java #or whatever your path is
export PATH=$PATH:$JAVA_HOME/bin/
You can open ~/.bash_profile in a terminal with nano
nano ~/.bash_profile.
Nano hint: writeout means save.
You'll need to reopen your terminal to load the new path. Or, reload it with the source command.
source ~/.bash_profile
Alternatively, if you like saving keystrokes you can type
. ~/.bash_profile