I'm running Windows 8 and I can not get javac to work.
I have set my PATH in environmental variables to
C:\Program Files (x86)\Java\jdk1.7.0_17\bin
I have tried both with and without ';' but to no avail.
I recently had this issue on my desktop and adding ; worked but it's not in this case.
I have made sure that javac does exist in the bin too.
Any suggestions on fixes would be greatly appreciated.
EDITS
echo %PATH% gives:
C:\Users\Arktri\Desktop>echo %PATH%
C:\Program Files (x86)\Intel\iCLS Client\;
C:\Program Files\Intel\iCLS Client\;
C:\Windows\system32;C:\Windows;
C:\Windows\System32\Wbem;
C:\Windows\System32\WindowsPowerShell\v1.0\;
C:\Program Files (x86)\Intel\OpenCL SDK\2.0\bin\x86;
C:\Program Files (x86)\Intel\OpenCL SDK\2.0\bin\x64;
C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;
C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;
C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;
C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT;;
C:\Program Files (x86)\Java\jre7\bin
And the exact error is: 'javac' is not recognized as an internal or external command, operable program or batch file.
As far as I can see you have the JRE in your PATH, but not the JDK.
From a command prompt try this:
set PATH=%PATH%;C:\Program Files (x86)\Java\jdk1.7.0_17\bin
Then try javac again - if this works you'll need to permanently modify your environment variables to have PATH include the JDK too.
Go to my computer;
Right click properties;
Go to advanced system settings;
Go to environment variables;
In user variables for user click on new(top new button, not on system variables);
Set variable name as: Path
Set the value of that variable to: C:\Program Files\Java\jdk1.7.0_76\bin
Click ok;
Click ok;
Click ok.
Now you're set. Type javac in cmd. All javac options will be displayed.
EDIT: As #MediaMaker pointed out, after completing the above steps, you need to open a new command prompt for it to work.
Easiest way: search for javac.exe in windows search bar. Then copy and paste the entire folder name and add it into the environmental variables path in advanced system settings.
I'm searched many answers that suggest me to type in cmd:
set path = "%path%;c:program files\java\jdk1.7.0\bin"
but this is WRONG!
the right solution is that you leave "set" and just type
path = %path%;c:program files\java\jdk1.7.0\bin
P/s: of course you have to replace "jdk1.7.0" folder by your current java version folder. This works well on win 7 32bit, but I think it also works on win 8 - try it!
Start off by opening a cmd.exe session, changing directory to the "program files" directory that has the javac.exe executable and running .\javac.exe.
If that doesn't work, reinstall java. If that works, odds are you will find (in doing that task) that you've installed a 64 bit javac.exe, or a slightly different release number of javac.exe, or in a different drive, etc. and selecting the right entry in your path will become child's play.
Only use the semicolon between directories in the PATH environment variable, and remember that in some systems, you need to log out and log back in before the new environment variable is accessible to all environments.
You don't have jdk1.7.0_17 in your PATH - check again.
There is only JRE which may not contain 'javac' compiler.
Besides it is best to set JAVA_HOME variable, and then include it in PATH.
do this:
1. run CMD (WIN+R then type in CMD)
2. Type this:
set PATH=%PATH%; java installation path\bin
Replace "java installation path" with the directory JDK is installed in, such as C:\Program Files (x86)\Java. Be sure to add the \bin after the JDK directory, because this points to "javac" and "java" (BIN stands for "binaries")
This way, you can run the Java compiler from anywhere. It is impossible to CD to the JDK directory because it has a space in Program Files, and DOS will not let you CD to these directories.
Related
I have installed Java 8 and set my JAVA_HOME and JRE_HOME paths and added %JAVA_HOME% to the start of the path variable.
I created a helloworld.java application and am able to compile it using:
javac helloworld.java
However, when I try to run:
java helloworld
I get the error:
The system cannot find the file C:\ProgramData\Oracle\Java\javapath\java.exe
How can I solve this?
1.Just go to C:\ProgramData\Oracle\Java\javapath\
2.You will find there shortcuts for java.exe,javaw.exe,javaws.exe which are pointing to a location where they actually are not existing now
3.Go to the jre location where you have installed java like C:\Program Files\Java\jre6\bin
You will find java.exe,javaw.exe,javaws.exe
Create shortcuts for these files and replace with the ones which are present in C:\ProgramData\Oracle\Java\javapath.
It works
Just set %JAVA_HOME%/bin to your path variable.
If you are blocked from modifying system variables from command line, but are able to open up an elevated command prompt, then run a command like this:
setx \M JAVA_HOME "C:\Program Files\Java\jdk1.8.0_25"
But of course, change the directory to point to your installed version of java. Note that the JAVA_HOME path does not point into the bin directory, it stops one level above bin.
I was able to solve this issue. To do so I used the advice from this answer:
Java SE Development Kit 8u25 on a 64-bit Windows 8
Set the following user environment variables (== environment variables of type user variables)
•JAVA_HOME : C:\Program Files\Java\jdk1.8.0_25
•JDK_HOME : %JAVA_HOME%
•JRE_HOME : %JAVA_HOME%\jre
•CLASSPATH : .;%JAVA_HOME%\lib;%JAVA_HOME%\jre\lib
•PATH : your-unique-entries;%JAVA_HOME%\bin
(make sure that the longish your-unique-entries does not contain any other references to another Java installation folder.)
Usually when you install the java jdk, you have to then paste the path of the bin folder to the PATH environment variable. When I installed it, what I found was that there was a new folder that I did not know about. Here is the path of the folder on my laptop: C:\ProgramData\Oracle\Java\javapath
What I notice at the end of the folder (javapath) is that there are symbolic links to certain java exes that are in my jdk bin folder. The path for this: C:\Program Files\Java\jdk1.8.0_60\bin
The problem is that the symbolic links only link up to a few java exes and not the whole bin folder (which is why you paste the bin folder in the PATH environment variable so you have permanent access to everything and you don't have to set it up each time).
What is also interesting is that the path C:\ProgramData\Oracle\Java\javapath was put in the PATH environment variable when I installed java 8u60.
Can I delete the path C:\ProgramData\Oracle\Java\javapath and replace it with
C:\Program Files\Java\jdk1.8.0_60\bin since C:\Program Files\Java\jdk1.8.0_60\bin has all the java exes that C:\ProgramData\Oracle\Java\javapath already has plus more? Would that cause any problems in the future because I plan to use netbeans in the future? If not, can I safely delete the javapath folder?
I've only just installed java 8u60 and and I can't execute jar files because there is no link to the bin folder. I've tried to create javac.exe as a symlink and placed it in inside the javapath folder but everytime I type javac in the command prompt I get a message that says that Jli.dll is missing when it's actually in the jdk bin folder
I could just set it up each time I use the cmd prompt but that would be redundant and annoying. I could also just setup C:\Program Files\Java\jdk1.8.0_60\bin to the PATH environment variable as well and leave C:\ProgramData\Oracle\Java\javapath alone but I don't know if that would cause any problems.
Ultimately I could just go back to a previous version of java.
Yes, you can change the PATH environment variable to be whatever you want it to be, including replacing the C:\ProgramData\Oracle\Java\javapath value with the C:\Program Files\Java\jdk1.8.0_60\bin value.
That's what I do, and I've never had trouble with it. Just have to redo it every time you install a new version.
Others have asked this question but the answer is usually the same and not helpful to my problem. I installed JDK, and added C:\Program Files\Java\jdk1.7.0_25\bin to the path system variable. I checked, jps.exe is in that directory. I restarted my computer but still have had no luck. When I run jps I get the error:
'jps is not recognized as an internal or external command, operable command or batch file'
When I run C:\Program Files\Java\jdk1.7.0_25\bin\jps.exe on the command line it works fine. Working in Windows 7.
Mildly obvious mistake, but I realize that I had spaces in between the directories in my path and that caused them to not be recognized. So I had %OTHER_PATH%; C:\Program Files\Java\jdk1.7.0_25; %ANOTHER_PATH%, which I just had to switch to %OTHER_PATH%;C:\Program Files\Java\jdk1.7.0_25;%ANOTHER_PATH%
Your JDK bin directory does not exist in PATH variable.
To add this you need to do below steps.
Go to "Control Panel >> System >> Advanced system settings >>
Environment Variables
Click 'Path' from System variables
Click Edit.
Now add the path "C:\Program Files\Java\jdk1.8.0_72\bin"
Now open command window and write jps. It will work now.
In addition to the above solutions, still if you have issue with jps command, Please check whether the default system installed java(JRE) path is already available in the Path variable.
My case i faced the same issue and observed the following path already available in the path variable.
"C:\Program Files (x86)\Common Files\Oracle\Java\javapath"
So I had to change the position(move up) of my new JAVA_HOME path, new JAVA_HOME path is above the default oracle javapath.
I'm new to java and eclipse. I even saw this type of query on this website. But I have applied all those methods and it was also helpful. But when I try to open eclipse, it is not opening:
This is my path for java
C:\Program Files (x86)\Java\jre6
this is where my eclipse is
C:\Users\New folder\eclipse
But when I run the eclipse I'm getting an error
"A java rumtime 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 location: C:\Users\New
folder\eclipse\jre\bin\javaw.exe javaw.exe in your current path"
Please tell me the possible solution.
Thanks in advance!
If you have installed jdk then Eclipse won't have any issue to start. I think you just have installed JRE to run java programs. You need to install JDK.
To check whether you have installed JDK. Check Path C:\Program Files (x86)\Java. Your Java directory should contain directory jdk1.6.., If you don't have this directory there, search it at other places. If you did not find directory then you didn't install JDK.
Download JDK from here.
You should set JAVA_HOME and JRE_HOME variable. http://www.javawebonline.com/java-se-programming/beginners/java_home-jre_home-environment-variables/
And another suggestion is you should move your java home to another location and test your path to java such as
C:\Java\jre6
instead of
C:\Program Files (x86)\Java\jre6.
Go to C:\Users\New folder\eclipse
Open eclipse.ini file with text editor and add the javaw location there
( right after -vm part ) like so:
-vm
C:/Program Files/Java/jdk1.6.0_33/bin/javaw.exe <--- change to your path
-vmargs
Open the command prompt by pressing Windows+r, type cmd and press Enter.
Type javac and check the output.
If it gives all the options and usage, then you have configured the PATH vairables correctly, or else you have not set them up correctly.
Try it by checking the value at the command prompt.
NOTE
You need to open a new command prompt each time you change the environment variables.
If you have two Program Files folder in your C: drive
such as
C:\Program Files
C:\Program Files (x86)
then try to put your java inside
C:\Program Files
instead of C:\Program Files (x86)
It seems you are running 64 bit eclipse in 64 bit operating system. If you are running 64 bit eclipse then you need 64 bit JDK. Please install 64 bit JDK and run eclipse.
I cannot run the java keyword from the console. What settings do I have to change on XP to get this working.
Thanks in advance.
Install the JVM (or JDK)
Set the JAVA_HOME environment variable to the installation folder
Add the executables location into the PATH environment variable (referencing JAVA_HOME)
Optionally set a CLASSPATH environment variable to have a default classpath
When you install the Sun JRE using its installer, there should be a java.exe file written to %windir%\SYSTEM32. Since this directory is on the PATH, it should be available on the command line.
If you installed Java via some other mechanism, you will have to locate the JRE's bin directory and configure PATH yourself.
right click on computer -> property -> advanced -> environment variable
then choose where save the path:
- in user variable (the path is associated to the user, every other user cannot directly run java, without setting it up).
- in system variable (every user can run java by console without specify the entire path).
choose row with path, double click -> at the end on the line add an ; and then specify the java installation path plus bin...
Exmple:
I installed java in C:\Programs\Java
so I have to put in path C:\Programs\Java\bin\
in Path I had:
%CommonProgramFiles%\Microsoft Shared\Windows Live;%SystemRoot%\system32
after modification I'll have
%CommonProgramFiles%\Microsoft Shared\Windows Live;%SystemRoot%\system32;C:\Programs\Java\bin\