Unable to locate tools.jar
JavaAnttools.jarJava Problem Overview
I am building a project in Java.
I have this error:
Unable to locate tools.jar. Expected to find it in C:\Program Files\Java\jre6\lib\tools.jar
I have installed a JDK and the folder: C:\Program Files\Java\jre6\lib
is in my system but the file tools.jar
is not there.
Java Solutions
Solution 1 - Java
Yes, you've downloaded and installed the Java Runtime Environment (JRE) instead of the Java Development Kit (JDK). The latter has the tools.jar, java.exe, javac.exe, etc.
Solution 2 - Java
In case this is still an issue for anyone, I have a bit of clarification on the previous answers. I was running into this same issue using ant with only a JDK installed. Although, the JDK installer gave me a directory structure like this:
Directory of C:\Program Files\Java
05/08/2012 09:43 AM <DIR> .
05/08/2012 09:43 AM <DIR> ..
05/08/2012 09:46 AM <DIR> jdk1.7.0_04
05/08/2012 09:19 AM <DIR> jre6
05/08/2012 09:44 AM <DIR> jre7
0 File(s) 0 bytes
and when I ran ant, it complained about not finding tools.jar under the jre7 subdirectory. It wasn't until I set "JAVA_HOME=C:\Program Files\Java\jdk1.7.0_04"
that the error went away.
Solution 3 - Java
-
Install the Java SDK.
-
Add a System Environment Variable called JAVA_HOME with the value of JDK location.
Go to Control Panel\System and Security\System. Advanced System Settings, Environment Variables, System Variables, New... Example:
Variable Name:JAVA_HOME
Variable Value: C:\Program Files\Java\jdk1.7.0_21 -
Close/reopen your CMD window so that the new variable takes effect before attempting to re-run the ant command.
Solution 4 - Java
I had the same problem and copying C:\Program Files\Java\jdk1.6.0_26\lib\tools.jar
to C:\Program Files\Java\jre6\lib\ext
worked for me
Solution 5 - Java
If you have installed JDK 9.0.1 you will also have this problem as the tools.jar has been deprecated. See migration document.
Solution 6 - Java
Set your JAVA_HOME
environmental variable to point to C:\Program Files\Java\jdk1.7.0_02
.
Solution 7 - Java
If you are in Linux you can solve this by installing java on the system:
sudo apt-get install openjdk-7-jdk openjdk-7-jre
Solution 8 - Java
No, according to your directory structure, you have installed a JRE, not a JDK. There's a difference.
C:\Program Files\Java\jre6\lib
^^^^
It should be something like:
C:\Program Files\Java\jdk1.6.0_24
Solution 9 - Java
Don't spend too much time looking for tools.jar
. If you get an error like that, don't be upset.
If you already have java JDK 1.5, go to your lib
folder, and the tools.jar
should be available there. Copy and paste it in your ant bin
folder, then try to use the command ant -version
.
You should see the expected result.
Solution 10 - Java
I had the same issue on a linux machine. I was quite frustrated at first, because I have installed both the JDK and JRE. I am using version 1.6, 1.7 and 1.8 simultaneously, and I have played a lot with the alternatives to have everything set properly.
The problem was quite stupid to solve, yet counter-intuitive. While I was using the correct JDK, I paid attention to the path of the tools jar maven complained about - it was expecting it to be
$JAVA_HOME\..\lib\tools.jar
The $JAVA_HOME
variable pointed directly to my jdk
folder (/usr/local/java
which was also the correct $PATH
entry and alternative sym link). It actually searches for the lib
folder outside the java directory, because:
$JAVA_HOME\..\lib\tools.jar
will resolve to
/usr/local/lib/tools.jar
and that is not a valid location.
To solve this, the $JAVA_HOME
variable should instead point to this location /usr/local/java/jre
(assuming the JDK path is /usr/local/java
) -- there is actually jre
folder inside the JDK installation directory, that comes with each JDK. This new setup will cause maven to look at the JRE directory, that is part of the JDK:
$JAVA_HOME\..\lib\tools
which now resolves to
/usr/local/java/jre/../lib/tools.jar
and finally to
/usr/local/java/lib/tools.jar
which is where the tools.jar
really resides.
So, even if you are indeed using the JDK instead of the JRE, the $JAVA_HOME has to point to the JRE. Remember, the OS alternative should still refer to the JDK.
Solution 11 - Java
go to your jdk path where you installed your java
For e.g In my PC JDK installed in the following path
"C:\Program Files\Java\jdk1.7.0_17";
After go to the lib folder e.g "C:\Program Files\Java\jdk1.7.0_17\lib"
in the lib directory there is tool.jar file
Copy this file and past it in the lib forlder of jre7 directory for e.g
"C:\Program Files\Java\jre7\lib"
Solution 12 - Java
You may face similar problem on Ubuntu:
Embedded error: tools.jar not found: /usr/lib/jvm/java-7-openjdk-amd64/jre/../lib/tools.jar
The problem is with JAVA_HOME that is not set properly.
So, on Ubuntu 14.04 x64 using Java8:
sudo apt-get install openjdk-8-jdk openjdk-8-jre
export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
Solution 13 - Java
It's worth observing that tools.jar has been removed from the JDK since Java 9. https://docs.oracle.com/javase/9/migrate/toc.htm#JSMIG-GUID-055EA9F4-835E-463F-B9E1-9081B3D9E55D
If people are facing this issue compiling a Java program with JDK 9+, you may need to review the dependencies of your projects.
In my case, I was trying to compile a project using AspectJ and the Maven plugin org.codehaus.mojo:aspectj-maven-plugin:1.11
. After searching online, I found an alternative that supports Java 9+: dev.aspectj:aspectj-maven-plugin:1.13.M3
.
Solution 14 - Java
I had the same problem even after installing Java JDK and set JAVA_HOME
to ..\jdk1.6.0_45\bin
folder.
Ant is still trying to find tools.jar
in C:\Program Files\Java\jre6\lib
folder.
I've fixed it by adding JAVACMD
environment variable and set path for it to java.exe
in the jdk
folder.
In my case it was C:\Program Files\Java\jdk1.6.0_45\bin\java.exe
Solution 15 - Java
it has been solved with me in windows os by setting the JAVA_HOME variable before running as follows:
set JAVA_HOME=C:\Program Files\Java\jdk1.8.0_111
Solution 16 - Java
As many people mentioned, it looks like you are looking in your JRE instead of the JDK for the tools.jar file.
I would also like to mention that on recent versions of the JDK, there is no more tools.jar file. I downloaded the most recent JDK as of today (JDK version 12) and I could not find any tools.jar. I had to download JDK version 8 (1.8.0) here https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html to get the tools.jar file. I downloaded that version, took the tools.jar file and put it into my recent version's lib folder.
Solution 17 - Java
Make sure that both the %JAVA_HOME% and %JAVA_HOME%/bin paths are added to your PATH variable.
All the answers about copying tools.jar into the correct position is a poor idea at best.
Make sure that your IDE can find these jars the way it was designed and intended for.
Solution 18 - Java
In eclipse window> preferences>Java> Installed JRE, I pointed the directory to the jre directory in the jdk 1.7 and i worked file for me e.g C:\Program Files\Java\jdk1.7.0_71\jre
Solution 19 - Java
I had my JDK_path (C:\Program Files\Java\jdk1.7.0_79
) in my JAVA_HOME
and also the JDK_path\bin in my PATH
. But, still my ant was using the JRE instead of JDK.
The issue was I had C:\ProgramData\Oracle\Java\javapath
before my JDK_path in PATH
variable. I simply moved my JDK_path before the oracle one and the issue solved.
Solution 20 - Java
solving this problem I have simply copied the tools.jar file from C:\Program Files\Java\jre1.8.0_112\lib to C:\Program Files\Java\jdk1.8.0_112\lib so that I have two tools.jar files instead of one and problem disappeared.
Solution 21 - Java
Expected to find it in C:\Program Files\Java\jre6\lib\tools.jar
if you have installed jdk then
..Java/jdkx.x.x
folder must exist there so in stall it and give full path like
C:\Program Files\Java\jdk1.6.0\lib\tools.jar
Solution 22 - Java
Make sure that your classpath is set correctly and pointing to the correct version of the JDK that you have installed. Also, are you using Open JDK? I have had this issue before after I tried to move from open JDK to Suns JDK. This is an example of how that issue could be fixed.
Solution 23 - Java
maven-compiler-plugin use jdk ,not jre, tools.jar is in C:\Program Files\Java\jdk1.6.0\lib\tools.jar you must config project JRE System Libary with jdk,not jar. This is the simplest solution.
Solution 24 - Java
- Right click on your ant file
- Go to "Run as" then click on "Ant Build..."
- Go to the "JRE" tab
- Select a JDK and not a JRE
Solution 25 - Java
For me what's working: I downloaded an old version of Java 1.7
I actually set my JAVA_HOME from C:/program files X86/Java BUT after I installed the 1.7 version I had another Java in program files/Java. And at this moment I found the tools.jar here. Then I changed for this new path and it's working
Solution 26 - Java
I was also facing the same error. This was removed after setting Java_Home path to C:\Program Files\Java\jdk1.8.0_121. Please ensure bin is not included in the path and no slash is there after jdk1.8.0_121 after you have defined %JAVA_HOME%\bin in the system path variable.
Solution 27 - Java
If you're in a RHEL environment the package name containing tools.jar would end with "openjdk-devel".
Solution 28 - Java
This is the solution for Windows: in Computer > Advanced system settings > Advanced > Environment variables..., add this in System variables:
Solution 29 - Java
I have downloaded tools.jar and after that I copied it into path in error message.
C:\Program Files\Java\jdk-11.0.1\bin > paste here tools.jar
After that I have restarted Spring Tool Suit 4 and everything was working. When I was trying to fix that problem I have made new environmental variable: Control Panel / System / Advenced / Environmental variables / new Name : JAVA_HOME Value: C:\Program Files\Java\jdk-11.0.1 But I do not know is it necessary.
Solution 30 - Java
maybe you have updated the JREs in the OS, and the addition has added in the "path" of the environment variables an entry ".../Oracle/jer" that overwrites your JAVA_HOME. try to remove it from the "path" by leaving JAVA_HOME.
Solution 31 - Java
Incase it helps, the problem for me was that I had 2 entries in my PATH environment variable which pointed to a location containing the javaw executable.
I cleaned up the variable to make sure that "%JAVA_HOME%\bin" was the only entry referencing a location containing my java executables.
Solution 32 - Java
This happens when the Environment Variable JAVA_HOME is not set, or points to the wrong directory. You can see the value that Ant has by running the command:
ant -diagnostics
And looking for the line that shows java.home
. If you have grep
installed then you can simple run:
ant -diagnostics | grep java.home
To fix the issue, set the JAVA_HOME
Environment Variable to the JDK directory. While setting the variable differs slightly between *nix and Windows, the rest works the same on all operating systems. So it doesn't matter if you use the GUI that Windows provides, or the set
or setx
commands, as long as the value is set prior to calling ant
(if you've set it globally then it must exist before you open the shell/terminal window).
After setting JAVA_HOME
you can run ant -version
, for example, and get the result, e.g.
> Apache Ant(TM) version 1.10.8 compiled on May 10 2020
Solution 33 - Java
Step1 Check your jdk is installed. and variable path is setted. Step2 unistall your eclipes and reinstall it. other wise It will continue to be a problem
Solution 34 - Java
I have resolved tool.jar file error recently. I am using eclipse oxygen ide. It works perfectly and easy. Repeat these steps on your system as
-
Download tool.jar file according to your jre jdk version. Lets suppose tool.jar file is 1.8.0.tool.jar
-
After donwload 1.8 .0 tool.jar file rename is as as tool.jar
-
Then go to your jdk installation folder
-
Then go to lib folder open it
-
And paste here
-
You will make this type path.
E:\jdk 8\lib\tools.jar