JAVA_HOME is not set currently. Please set JAVA_HOME. I want to run appium programs but its throwing this weird error
Even java_home path not displaying in terminal. Currently displaying blank
My bash profile
JAVA VERSION Is also getting displayed
try the following command:
vim .bash_profile (do you see export JAVA_HOME=$(/usr/libexec/java_home) under the file) ?
If not then you need to add it there.
If already added then run source .bash_profile, it reloads the file. And the path is set.
The first bash line is incorrect.
export JAVA_HOME=$(/usr/libexec/java_home)
Should be:
export JAVA_HOME=/usr/libexec/java_home
I've installed Spark 2.1.1 on Ubuntu and no matter what I do, it doesn't seem to agree with the java path. When I run "spark-submit --version" or "spark-shell" I get the following error:
/usr/local/spark/bin/spark-class: line 71: /usr/lib/jvm/java-8-openjdk-amd64/jre/bin//bin/java: No such file or directory
Now obviously the "/bin//bin/java" is problematic, but I'm not sure where to change the configuration. The spark-class file has the following lines:
if [ -n "${JAVA_HOME}" ]; then
RUNNER="${JAVA_HOME}/bin/java"
I was originally using a version of Spark meant for Hadoop 2.4 and when I changed it to "RUNNER="${JAVA_HOME}" it would either give me the error "[path] is a directory" or "[path] is not a directory." This was after also trying multiple path permutations in /etc/environment
What I now have in /etc/environment is:
JAVA_HOME="/usr/lib/jvm/java-8-openjdk-amd64/jre/bin/"
This is the current java setup that I have:
root#ubuntu:~# update-alternatives --config java
There is only one alternative in link group java (providing /usr/bin/java): /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java
bashrc has the following:
export SPARK_HOME="/usr/local/spark"
export PATH="$PATH:$SPARK_HOME/bin"
Can anyone advise: 1) What files I need to change and 2) how I need to change them? Thanks in advance.
spark-class file is in the link, just in case:
http://vaughn-s.net/hadoop/spark-class
In the /etc/environment file replace
JAVA_HOME="/usr/lib/jvm/java-8-openjdk-amd64/jre/bin/
with
JAVA_HOME="/usr/lib/jvm/java-8-openjdk-amd64/jre/
then execute
source /etc/environment
also RUNNER="${JAVA_HOME}/bin/java" should be kept as it is
Windows Environment:
Open Advanced system settings -> Environment Variables to set JAVA_HOME path, and the most common mistake is setting the path to JAVA folder:
JAVA_HOME: Directory-Name:\java
rather than setting it to JDK folder
JAVA_HOME: Directory-Name:\jdk
This is how it worked for me.
I followed this thread to solve my problem, I have the same problem with a different version of JDK and for some reason it didn't work. I still get -bash: JAVA_HOME: command not found when I type JAVA_HOME to my terminal.
I have JDK1.8.0.45 located at Library/Java/JavaVirtualMachines/jdk1.8.0_45.jdk/Contents/Home which I can access with /usr/libexec/java_home
Using
echo "export JAVA_HOME=/usr/libexec/java_home" >> ~/.profile
~/.profile
I do get
"export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_45.jdk/Contents/Home"
saved to ~/.profile, and I can check this using /usr/bin/open ~/.profile
But I do not understand why JAVA_HOME still doesn't work and I need this to install maven.
Thanks!
My ~/.bash_profile has this line in it, and it's been working fine.
export JAVA_HOME=$(/usr/libexec/java_home)
This line basically says "run the program named /usr/libexec/java_home and export its output as a variable named JAVA_HOME."
I suggest opening your .profile or .bash_profile in a text editor rather than using echo statements to append new lines to it. That way you can see everything that's in the file and make sure other old lines in the file aren't causing you issues.
After you make a change to .bash_profile, make sure you open a new terminal window before testing it.
You can check the value of any environment variable (including JAVA_HOME) by simply echo'ing its value:
echo $JAVA_HOME
In my case the output of that echo command is:
/Library/Java/JavaVirtualMachines/jdk1.8.0_40.jdk/Contents/Home
Probably you misunderstood things. JAVA_HOME is not a command, it's an environment variable. You can't call JAVA_HOME in your terminal since - in fact - there is no such command, what your error message says.
You can see this variable's value by:
echo $JAVA_HOME
If it is set and points to a proper location then it's fine. Some tools that expect this variable to be set (e.g. Maven or Java IDEs) will work well.
Im building some application, where i would like to get some variable directly from linux.
I know, that the command to get the variable is System.getenv(), but i don't exackly know where i should set variable in linux.
I'm using Centos, and my tomcat is set in /usr/share/tomcat6
I was thinking, that maybe i should write it in /etc/profile file, but it doesn't works, and additionally i think that i should past the variable in user folder. User for Tomcat is tomcat, and his folder is /usr/share/tomcat6.
Should i create there file profile and add something like this? :
MY_VARIABLE=value
export MY_VARIABLE
Please help
From Terminal:
gedit ~/.bashrc
~ here refers to /home/USER directory.
Edit the file:
MY_VARIABLE=value
export MY_VARIABLE
confirm changes:
echo $MY_VARIABLE
Many Java applications that use shell scripts to configure their environment use the JAVA_HOME environment variable to start the correct version of Java, locate JRE JARs, and so on.
In macOS X 10.6, the following paths seem to be valid for this variable
/Library/Java/Home
/System/Library/Frameworks/JavaVM.framework/Home
/System/Library/Frameworks/JavaVM.framework/Versions/Current
Some of these are symlinks to the actual current VM (as defined in the Java Preference pane).
But which one should be used—or is it okay to use any of them?
I just set JAVA_HOME to the output of that command, which should give you the Java path specified in your Java preferences. Here's a snippet from my .bashrc file, which sets this variable:
export JAVA_HOME=$(/usr/libexec/java_home)
I haven't experienced any problems with that technique.
Occasionally I do have to change the value of JAVA_HOME to an earlier version of Java. For example, one program I'm maintaining requires 32-bit Java 5 on OS X, so when using that program, I set JAVA_HOME by running:
export JAVA_HOME=$(/usr/libexec/java_home -v 1.5)
For those of you who don't have java_home in your path add it like this.
sudo ln -s /System/Library/Frameworks/JavaVM.framework/Versions/Current/Commands/java_home /usr/libexec/java_home
References:
Oracle explains the java_home command
An article for configuring the JDK in Spring Tool Suite (Eclipse
2019) on MacOS
Also, it`s interesting to set your PATH to reflect the JDK. After adding JAVA_HOME (which can be done with the example cited by 'mipadi'):
export JAVA_HOME=$(/usr/libexec/java_home)
Add also in ~/.profile:
export PATH=${JAVA_HOME}/bin:$PATH
P.S.: For OSX, I generally use .profile in the HOME dir instead of .bashrc
I am having MAC OS X(Sierra) 10.12.2.
I set JAVA_HOME to work on React Native(for Android apps) by following the following steps.
Open Terminal (Command+R, type Terminal, Hit ENTER).
Add the following lines to ~/.bash_profile.
export JAVA_HOME=$(/usr/libexec/java_home)
Now run the following command.
source ~/.bash_profile
You can check the exact value of JAVA_HOME by typing the following command.
echo $JAVA_HOME
The value(output) returned will be something like below.
/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home
That's it.
I'm on Mac OS 10.6.8
The easiest solution works for me is simply put in
$ export JAVA_HOME=$(/usr/libexec/java_home)
To test whether it works, put in
$ echo $JAVA_HOME
it shows
/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
you can also test
$ which java
Nowadays Java seems to be installed in /Library/Java/JavaVirtualMachines
I tend to use /Library/Java/Home. The way the preferences pane works this should be up to date with your preferred version.
That above works not any more in YOSEMITE for GRAPHICAL APPLICATIONS! Like eclipse, or anything started with Spotlight. (.bash_profile, launchd.conf works for terminal sessions only.)
Before starting eclipse, just open a terminal window, and give out the following command:
launchctl setenv JAVA_HOME /Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home
(With your installation path! Perhaps works with $(/usr/libexec/java_home) instead of the full path too.)
View the whole excellent article about the permanent solution here:
Setting environment variables via launchd.conf no longer works in OS X Yosemite/El Capitan/macOS Sierra?
It is recommended to check default terminal shell before set JAVA_HOME environment variable, via following commands:
$ echo $SHELL
/bin/bash
If your default terminal is /bin/bash (Bash), then you should use #hygull method
If your default terminal is /bin/zsh (Z Shell), then you should set these environment variable in ~/.zshenv file with following contents:
export JAVA_HOME="$(/usr/libexec/java_home)"
Similarly, any other terminal type not mentioned above, you should set environment variable in its respective terminal env file.
This method tested working in macOS Mojave Version 10.14.6.
I've found this stack to help, i was having the same issue and i could fix:
My java path was here:
/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home
and was needed to put into my .bash_profile:
export JAVA_HOME=\"/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home\"
Hope help
As other answers note, the correct way to find the Java home directory is to use /usr/libexec/java_home.
The official documentation for this is in Apple's Technical Q&A QA1170: Important Java Directories on OS X: https://developer.apple.com/library/mac/qa/qa1170/_index.html
For me maven seems to work off the .mavenrc file:
echo "export JAVA_HOME=$(/usr/libexec/java_home -v 1.8)" > ~/.mavenrc
I'm sure I picked it up on SO too, just can't remember where.
Create file ~/.mavenrc
then paste this into the file
export JAVA_HOME=$(/usr/libexec/java_home)
test
mvn -v
Skipping Terminal setup since you mentioned applications, permanent system environment variable set up (works for macOS Sierra; should work for El Capitan too):
launchctl setenv JAVA_HOME $(/usr/libexec/java_home -v 1.8)
(this will set JAVA_HOME to the latest 1.8 JDK, chances are you have gone through serveral updates e.g. javac 1.8.0_101, javac 1.8.0_131)
Of course, change 1.8 to 1.7 or 1.6 (really?) to suit your need and your system
For Fish Shell users, use something like the following: alias java7 "set -gx JAVA_HOME (/usr/libexec/java_home -v1.7)"