I've put in an embarrassing amount of time reading threads here and elsewhere, I cannot compile HelloWorldApp.java
Using Windows 7
the location of the script is C:\Users\Phil\Desktop
the location of javac is C:\Program Files\Java\jdk1.8.0_77\bin
In Environment Variables, in both User and System Variables, I have clicked NEW, and given the "Variable Name" as javac and "Variable Value" as `
C:\Program Files\Java\jdk1.8.0_77\bin;
`
I have tried to make this work based on the 2 different ways here (to no avail): https://docs.oracle.com/javase/tutorial/getStarted/problems/
I am failing to set a path, or tell computer where to find it from within cmd. What am I doing wrong?
just you have to do set temporary path set path=C:\Program Files\Java\jdk1.7.0_45;
or
change your Environment variable path
to
variable name=%path%
variable value:\Program Files\Java\jdk1.7.0_45;
then open cmd and run javac command to check
Okay, so I have solved my problem:
In Environment Variables, the "Variable Name" must be: PATH
The Variable value is: C:\Program Files\Java\jdk1.8.0_77\bin
Now It works!
I am building C# proxies for Java classes (using proxygen.xml) and my question is: can Jni4Net compile .java files using different JDK than saved in JAVA_HOME variable? Or do I need to change it temporary?
Thanks
Jni4Net uses the JAVA_HOME path, so the easiest option in your case is to change it temporarily.
I have been trying to install Maven v 3.0.4 on my machine win 7 for the first time.I have a problem setting the path environment System variable I have the following 4 entries :
PATH
%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;%SYSTEMROOT%\System32\WindowsPowerShell\v1.0\;C:\Program Files\Java\jdk1.7.0_04;C:\Program Files\apache-maven-3.0.4\bin;M2_HOME;%M2%
M2_HOME
C:\Program Files\apache-maven-3.0.4\bin
M2
%M2_HOME%\bin
JAVA_HOME
C:\Program Files\Java\jdk1.7.0_04\bin
when I do mvn --version
I get the error:
JAVA_HOME not found in your environment, please set the JAVA_HOME variable in your environment to match the location of your java installation
The java -version displays the java version fine,
what am I doing so horribly wrong? Is the PATH ok?
Help appreciated, thanks.
It is only necessary to set the path to the Maven binary and to the JDK correctly:
set PATH %SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;%SYSTEMROOT%\System32\WindowsPowerShell\v1.0\;C:\Program Files\Java\jdk1.7.0_04\bin;C:\Program Files\apache-maven-3.0.4\bin
Furthermore you need to set the JAVA_HOME correctly which is done under windows like this:
SET JAVA_HOME=C:\Program Files\Java\jdk1.7.0_04
Be aware of setting JAVA_HOME to the root of the installed JDK and not to bin folder it.
The settings of M2 and M2_HOME is not necessary.
from command prompt run the following
set M2_HOME= C:\Program Files\apache-maven-3.0.4
set PATH=%PATH%;%M2_HOME%\bin
set JAVA_HOME=C:\Program Files\Java\jdk1.7.0_04
set PATH=%PATH%;%JAVA_HOME%\bin
cmd.exe
mvn -version
The environmental variables should point to the installation directory of each program respectively, and their corresponding bin folders should be added to the PATH:
Make sure that your JAVA_HOME points to the C:\Program Files\Java\jdk1.7.0_04 (or whatever directory you have installed your JDK to).
Add the %JAVA_HOME%\bin folder to your PATH (e.g. by replacing the part with C:\Program Files\Java\jdk1.7.0_04). Make sure that you use ; to separate different path components.
Likewise, the M2_HOME variable should be assigned Maven's installation directory, e.g. C:\Program Files\apache-maven-3.0.4 and you should add %M2_HOME%\binto the PATH (the part with C:\Program Files\apache-maven-3.0.4\bin;M2_HOME;%M2% can be removed.
The advantage of adding the environmental variables %JAVA_HOME%\bin and %M2_HOME%\bin on the path rather than the fully qualified path is that it will be easy to update Java and Maven (or to have several versions installed in parallell). All you need to do is to update the environmental variable, and the PATH variable will fallow automatically.
I ran into the same issue as the original poster. I checked, double checked, and triple checked everything to conform to what everyone has (correctly) indicated the setup needs to be. I still got the same error. In the end, I ran SET JAVA_HOME=C:\Program Files\Java\jdk1.7.0_45 from the command line and then ran the mvn command and viola.
So, for what ever reason, pss's suggestion did the trick. Obviously, this doesn't really change what everyone else said, because that's exactly what my environment variables look like...just had to hit the JAVA_HOME from the command line.
Oddness.
I followed all the steps but it was not working for me. But as soon i have set the JAVA_HOME Path, in Command prompt just type:
C:>SET JAVA_HOME=C:\Program Files (x86)\Java\jdk1.8.0_91
It is working fine in fraction of seconds. Thanks Everyone.
I faced the same problem on local installation. I tried out all the suggested methods including the SET method but that didn't work for me. In the end, I had to manually add another environment variable to the system, and then after that
mvn -v
gave the appropriate response:
Apache Maven 3.3.3 (7994120775791599e205a5524ec3e0dfe41d4a06; 2015-04-22T04:57:37-07:00)
Maven home: C:\Program Files (x86)\apache-maven-3.3.3-bin\apache-maven-3.3.3\bin\..
Java version: 1.8.0_45, vendor: Oracle Corporation
Java home: C:\Program Files\Java\jdk1.8.0_45\jre
Default locale: en_US, platform encoding: Cp1252
OS name: "windows 8", version: "6.2", arch: "amd64", family: "dos"
If, like me, you are running mvn -version from the command prompt, and then adding any missing environment variables from the GUI, it is possible that you just have to reload the command prompt after adding the environment variables.
Just exit and run cmd.exe
You need to make a variable of name JAVA_HOME in your Environment and set its value as path to jdk.
Right click on My Computer/ This PC -> Properties
Choose Advance system settings
Open Environment variables
Under System variables click on New... button and give the name
as JAVA_HOME and value as c:/path/to/jdk
Version that I always use. Double click and you get the maven up and running
#echo off
title Maven 3.0.5
set JAVA_HOME=C:\Users\hutingung\Development\jdk\jdk1.6.0_33
set MAVEN_OPTS=-Xmx1024m -Xms512m -XX:MaxPermSize=192m -Dfile.encoding=utf-8
set MAVEN_HOME=C:\Users\hutingung\Development\tools\apache-maven-3.0.5\bin
set PATH=%MAVEN_HOME%;%JAVA_HOME%\bin;%PATH%
#cmd /k
Yes, Appending that path C:\programfiles\maven\bin to path variable in system variables is enough, it will work. No need to add user variables.
I have already done my homework before posting this question. I am trying to build Portico-1.0.2 on Red-Hat Linux 64 bit machine using apache ant. Initially I was setting JAVA_HOME path to jre-1.6.0_31/bin folder but it threw an error that : Unable to locate tools.jar. Expected to find it in jre1.6.0_31/lib/tools.jar.
Then after exploring stackoverflow I found few posts explaining to install jdk and set its folder as the JAVA_HOME path. So I have installed Jdk-1.6.0 in Redhat Linux and after installing jdk I located tools.jar file in it's lib folder. Now when I set the JAVA_HOME path to : /usr/lib/jvm/jre-1.6.0-openjdk.x86_64, it throws an error : portico-1.0.2/codebase/build.xml:55: The JAVA_HOME environment variable must be set
But I have set the JAVA_HOME in .bashrc file as follows :
JAVA_HOME=/usr/lib/jvm/jre-1.6.0-openjdk.x86_64
PATH=$JAVA_HOME:$PATH
I am not sure what to do. Any advice on how to solve this problem.
Confusingly the JDK also contains a JRE, the latter you've set as JAVA_HOME thereby repeating your problem...
The Red hat docs describe how to set the JAVA_HOME
hi open the bashrc file in the root directory and add the path to your jdk and you will be good to go..
eg
export JAVA_HOME=/usr/java/jdk1.6.0_19
export PATH=$PATH:$JAVA_HOME/bin
This question already has answers here:
Error installing Ant: ANT_HOME is set incorrectly
(31 answers)
Closed 8 years ago.
When I am running ant command its showing the following output:
ANT_HOME is set incorrectly or ant could not be located. Please set ANT_HOME.
ANT_HOME is is an environment variable which can be set temporary for a command line instance (window) by calling SET. Example:
SET ANT_HOME="C:\Program Files\Apache-Ant"
For permanently setting an environment variable open the Control Panel and open System. On the tab Advanced you should find a button named Environment Variables