I am using javadoc doclets with gradle, so I need to use the package tools.jar, which is in the lib folder from the jdk (1.6.0_26 in my case).
The point is that gradle does not take it automatically, so I was adding that tools package to my libs folder, and then adding it to dependencies.gradle .
Now I want to take it directly from my JDK home into my dependencies.gradle. Is there a way to do that? I have tried the next in my dependencies.gradle:
compile files("${System.properties['java.home']}/lib/tools.jar")
But it does not find it while compiling.
I had this problem when I was trying to run commands through CLI.
It was a problem with system looking at the JRE folder i.e.
D:\Program Files\Java\jre8\bin. If we look in there, there is no Tools.jar, hence the error.
You need to find where the JDK is, in my case: D:\Program Files\Java\jdk1.8.0_11, and if you look in the lib directory, you will see Tools.jar.
What I did I created a new environment variable JAVA_HOME:
And then you need to edit your PATH variable to include JAVA_HOME, i.e. %JAVA_HOME%/bin;
Re-open command prompt and should run.
Found it. System property 'java.home' is not JAVA_HOME environment variable. JAVA_HOME points to the JDK, while java.home points to the JRE. See that page for more info.
Soo... My problem was that my startpoint was the jre folder (C:\jdk1.6.0_26\jre) and not the jdk folder (C:\jdk1.6.0_26) as I thought(tools.jar is on the C:\jdk1.6.0_26\lib folder ). The compile line in dependencies.gradle should be:
compile files("${System.properties['java.home']}/../lib/tools.jar")
I got the same error using Eclipse trying to execute a Gradle Task. Every time I run a command (i.e. war) the process threw an exception like:
Could not find tools.jar. Please check that C:\Program Files\Java\Jre8" is a valid JDK install.
I tried the solution listed in this post but none of them solved this issue. Here my solution :
Go to the "Gradle Task" view
Right Click on the task you want to execute
Select Open Gradle Run Configuration
In the tab "Java Home" select your local JDK repository then click OK
Run again, Enjoy!
I just added a gradle.properties file with the following content:
org.gradle.java.home=C:\\Program Files\\Java\\jdk1.8.0_45
I had a similar case using Ubuntu. The machine had only the JRE installed. So, I just executed the command below to install the JDK.
sudo apt install openjdk-8-jdk
In macOS Big Sur
The issue happens because of the environment variable JAVA_HOME is not correctly set in macOS Big Sur.
Step 1 - Confirm that you have issue with JAVA_HOME by printing its value in the terminal. You will most likely get an empty string.
echo $JAVA_HOME
Step 2 - Find the correct path on your machine
/usr/libexec/java_home -V
Copy that path associated with "Java SE 8" which usually looks like /Library/Java/JavaVirtualMachines/jdk1.8.0_202.jdk/Contents/Home
Step 3 - Edit .zshenv using nano
nano ~/.zshenv
Step 4 - Add the path from step 2 to the file as follows
export JAVA_HOME=YOUR_JAVA_PATH
example:
export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_202.jdk/Contents/Home
Step 5 - Source the updated .zshenv file to activate the environment variable
source ~/.zshenv
Step 6 - Print to confirm the path
echo $JAVA_HOME
I was struggling as well for this Solution. Found a better way to it with Gradle as described here.
We can get the JVM/JDK information from Gradle itself.
dependencies {
runtime files(org.gradle.internal.jvm.Jvm.current().toolsJar)
}
So simple.
In CentOS7 the development package will install tools.jar. The file is not present in java-1.8.0-openjdk
sudo yum install java-1.8.0-openjdk-devel
Add this to gradle.properties:
org.gradle.java.home=C:\Program Files\Java\jdk1.8.0_91
My solution on Mac:
add this line to gradle.properties:
org.gradle.java.home=/Library/Java/JavaVirtualMachines/jdk1.8.0_271.jdk/Contents/Home
not this one:
org.gradle.java.home=/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home
you can open the last home directory and will find that there is no lib/tools.jar file existence, so change the path to JavaVirtualMachines/jdk1.8.0_271.jdk and it works for me.
By the way, in the terminal, I echo the $JAVA_HOME and it gets the first path, not the second one, I think this is why my Gradle cannot work properly.
With Centos 7, I have found that only JDK has tools.jar, while JRE has not. I have installed the Java 8 JRE(yum install java-1.8.0-openjdk), but not the JDK(yum install java-1.8.0-openjdk-devel).
Installing the latter solves the problem. Also, remember to set JAVA_HOME.
It may be two years too late, but I ran into the same problem recently and this is the solution I ended up with after finding this post:
import javax.tools.ToolProvider
dependencies {
compile (
files(((URLClassLoader) ToolProvider.getSystemToolClassLoader()).getURLs()),
...
}
}
It should work if java.home points to a directory that's not under the JDK directory and even on Mac OS where you'd have classes.jar instead of tools.jar.
On windows 10, I encounter the same problem and this how I fixed the issue;
Access Advance System Settings>Environment Variables>System
Variables
Select PATH overwrite the default
C:\ProgramData\Oracle\Java\javapath
With your own jdk installation that is JAVA_HOME=C:\Program Files\Java\jdk1.8.0_162
On my system (Win 10, JRE 1.8.0, Android Studio 3.1.2, Gradle 4.1) there is no tools.jar in the JRE directory (C:\Program Files\Java\jre1.8.0_171).
However, I found it in C:\Program Files\Android\Android Studio\jre\lib and tried setting JAVA_HOME=C:\Program Files\Android\Android Studio\jre
That works (for me)!
What solved it for me was the following:
found tools.jar in C:\Program Files\Android\Android Studio\jre\lib
copy paste to C:\Program Files (x86)\Java\jre1.8.0_271\lib
ran the code again and it worked.
If you use terminal to build and you have this error you can point to jdk bundled with android studio in your gradle.properties file:
org.gradle.java.home=/usr/local/android-studio/jre
Linux
Open /etc/environment in any text editor like nano or gedit and add the following line:
JAVA_HOME="/usr/lib/jvm/open-jdk"
Windows
Start the System Control Panel applet (Start - Settings - Control
Panel - System).
Select the Advanced tab.
Click the Environment
Variables button.
Under System Variables, click add button, then past the following lines:
in Variable Name : JAVA_HOME
in Variable Value : C:\Program Files\Java\jdk1.x.x_xxx
where x.x_xxx jdk version you can get your jdk version from here C:\Program Files\Java
Under System Variables, select Path, then click Edit,then click new button then past the following line:
%JAVA_HOME%/bin;
This worked for me:
I was getting message
Execution failed for task ':app:compileDebugJavaWithJavac'.
Could not find tools.jar. Please check that C:\Program Files\Java\jre1.8.0_121 contains a valid JDK installation.
In Android Studio, check your SDK Location.
File, Project Structure, SDK Location, JDK Location.
Example: C:\android-studio\android-studio\jre
Copy the tools.jar file in the C:\android-studio\android-studio\jre\lib folder into the C:\Program Files\Java\jre1.8.0_121\lib folder.
Retry.
Like other answers I set org.gradle.java.home property in gradle.properties file. But path with \ separators did not work (building on windows 10):
Java home supplied via 'org.gradle.java.home' is invalid. Invalid
directory: C:Program FilesJavajdk1.8.0_65
So instead of
org.gradle.java.home=C:\Program Files\Java\jdk1.8.0_65
i had to use
org.gradle.java.home=C:/Program Files/Java/jdk1.8.0_65
then the build was successful
Problem is that project is build with JRE instead of JDK and since I was building it from eclipse this also worked:
In Window>Preferences>Gradle>Arguments specify Workspace JRE and specify your JDK.
In Window>Preferences>Java>InstalledJREs specify your JDK as default
In my case (Windows 10) after Java update I lost my Enviroment Variables, so I fixed added the variables again, based in the following steps https://confluence.atlassian.com/doc/setting-the-java_home-variable-in-windows-8895.html
I solved problem on this way:
download file tools-1.8.0.jar on http://www.java2s.com/Code/Jar/t/Downloadtools180jar.htm
unzip file and rename to tools.jar
copy to C:\Program Files\Java\jre1.8.0_191\lib folder
Retry
Put in gradle.properties file the following code line:
org.gradle.java.home=C:\\Program Files\\Java\\jdk1.8.0_45
Example image
Use this with modern versions of gradle:
def compiler = javaToolchains.compilerFor { languageVersion = JavaLanguageVersion.of(java.sourceCompatibility.majorVersion) }.get()
implementation compiler.metadata.installationPath.files('lib/tools.jar')
Did you make sure that tools.jar made it on the compile class path? Maybe the path is incorrect.
task debug << {
configurations.compile.each { println it }
}
Adding JDK path through JAVA_HOME tab in "Open Gradle Run Configuration" will solve the problem.
Could not find tools.jar
MacOS
echo export "JAVA_HOME=\$(/usr/libexec/java_home)" >> ~/.bash_profile
And restart Shell
I've tried most of the top options but it seems that I had something wrong with my environment setup so they didn't help. What solved the issue for me was to re-install jdk1.8.0_201 and jre1.8.0_201 and this solved the error for me. Hope that helps someone.
For me this error ocurred after trying to use audioplayers flutter library.
To solve i got tools.jar of the folder:
C:\Program Files\Android\Android Studio\jre\lib
and pasted on
C:\Program Files\Java\jre1.8.0_181\lib.
After this the build worked fine.
My Android Studio Version: 4.2.1
The "tools.jar" is provided by Oracle JDK which is required by android studio for compilation - I have faced this issue after updating android studio to latest version in my PC.
To Resolve the issue follow below steps:
In Android studio File -> Project Structure -> SDKs (Under Platform Settings)
A) Add JDK path by pressing '+' symbol in middle pane if suppose JDK/JDK home path is not present in the middle pane already (Middle pane also contains the Downloaded Android SDK's)
B) Java sdk will be usually present/installed in the path 64 bit => "C:\Program Files\Java\jdk1.X.Y_ABC" (In my PC it is 1.8.0_202) or 32 bit => "C:\Program Files (x86)\Java\jdk1.X.Y_ABC"
If suppose you don't have JDK installed in your PC,
please download and install from Oracle Java website
https://www.oracle.com/java/technologies/javase/javase-jdk8-downloads.html
Set JDK and JRE Path(Download both from webpage mentioned in step 2) in system environment variable
A) Press windows key type "Edit the system environment variables" and open the application
B) Go to Advanced -> Environment Variables Under system variables add JAVA_HOME and JRE_HOME as below
Set Windows system environment variable
Add jdk lib path on the Path environment variable under user variables (this step is required only if the error not resolves with the previous steps)
C:\Program Files\Java\jdk1.X.Y_ABC\lib
For Windows add JDK home path to the Gradle property file as org.gradle.java.home.
If you don't have gradle.properties file then create a new one and add
Ex: org.gradle.java.home=C:\Program Files\Java\jdk1.8.0_241
I need help to extract WLS, I tried to install WebLogic Server with CMD and i already setup java_home.
But i've got the following error:
Extracting the installer . . . . . . Done
This installer must be executed using a Java Development Kit (JDK)
but C:\Program Files\Java\jre7 is not a valid JDK Java Home.
The log is located here: C:\Users\E440\AppData\Local\Temp\OraInstall2016-12-18_05-38-26AM\launcher2016-12-18_05-38-26AM.log.
Press Enter to exit
I trying to set JAVA_HOME
C:\Oracle\FMW>set java_home
JAVA_HOME=C:\Program Files\Java\jdk1.7.0_79
And that is the path that i set in environmet variable, but it still display the same error.
I change the command to specified the oracle home
C:\Oracle\FMW>java -jar fmw_12.2.1.2.0_wls_quick.jar oracle_home=C:\app\user\product\11.2.0\dbhome
But again the error is still the same.
The C:\Program Files\Java\jre7 path is not even in my environment variable.
Is there something I missed?
I had the same issue and found this way around:
1- Copied the installer to the JDK folder you want to use for the installation.
In my case: C:\Program Files\Java\jdk1.8.0_121\bin
(Just to make it easier to get to it from the command line latter)
2- Open cmd and navigate until the Java JDK folder
3- Then execute the installer using the java in that folder:
./java -jar fmw_12.2.1.3.0_wls.jar
Here is an image of what I did.
(Dont forget to remove the fmw_12.2.1.3.0_wls.jar from there after the installation is completed)
As I say, is just a way around if you just want to go over the issue and get Weblogic installed. Im sure there are more elegant solutions, but I hope this one helps ;-)
Set up the the path too (in addition to java_home), so the JDK comes before the JRE:
set path=C:\Program Files\Java\<JAVA_VERSION>\bin;%path%
Remember to change the <JAVA_VERSION> to your JAVA version.
eg:
set path=C:\Program Files\Java\jdk1.8.0_202\bin;%path%
I ran a command where java in command prompt and it showed me that the java was installed here:
C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
I deleted this from the environment variables under path in windows.
I can't install Oracle Glassfish Server 3.1.2.2
When I run the installer (as admin) a dialog box appears saying "extracting files" and then I get the following error box saying I don't have JRE installed.
I have JRE and JDK 1.6 and 1.7 installed (all are 64 bit).
All are in the PATH system variable.
I've tried the program from CMD using the instructions in the error.
The command I use to run is:
OracleGlassfishServer(OGS)-3.1.2.2-windows.exe" -j "c:\Program Files\Java\jdk1.7.0_09\bin
I've also tried with the 1.6 bin.
I am running Win 7 64 bit.
The only thing I haven't thought to try yet was installing a 32bit JRE in the Program Files(x86) directory. Does it make sense that this would require a 32bit JRE?
What else could be the cause?
The Glassfish installation program requires the path to the JRE installation folder to be in the JAVA_HOME environment variable; if the variable is not set the folder can be specified on the command line. In both cases the folder must be the root folder of the JRE, not the bin subfolder.
Unfortunately, I found setting JAVA_HOME to be ineffective for me.
The solution that worked on my server was to run the Glassfish install with the -j option pointing to my JDK.
using command line and pointing to JRE installation directory should work Just fine, the problem with the above command is that you were pointing to bin directory, simply point to the home directory that is "c:\Program Files\Java\jdk1.7.0_09"
I've installed Oracle 11g r2 to my machine and when I opened Oracle SQL Developer it says: java 1.6.0_02 is not supported and telling me to install new java version.
Then I've installed JDK 1.6.0_27 and set the path in environment variables and run Oracle SQL Developer again, but the same error occurred.
How can I change the settings for Oracle SQL Developer to recognize 1.6.0_27 as my SDK?
In windows 10, I needed to go to following folder and change following product.conf file and set SetJavaHome directive.
%APPDATA%\sqldeveloper\<product-version>\product.conf
in my machine:
C:\Users\ati_o\AppData\Roaming\sqldeveloper\17.4.0\product.conf
with following line.
SetJavaHome C:\Tools\oraclejdk8
Thanks to comment from #thatjeffsmith, in MacOS or Linux/Unix, go to:
$HOME/.sqldeveloper/<product-version>/product.conf
to set same SetJavaHome directive.
sqldeveloper.conf under sqldeveloper/bin in the SQLDeveloper base directory has an entry for the java home being used.
(So, on Windows, if you have unzipped SQLDeveloper to C:\sqldev then sqldeveloper.conf is under C:\sqldev\sqldeveloper\bin)
Something like:
SetJavaHome C:\Program Files\Java\jdk1.6.0_20
Quit SQLDeveloper, remove this entry and relaunch SQLDeveloper. You should be prompted for the location of Java.
Go to sqldeveloper\sqldeveloper\bin and edit sqldeveloper.conf file.
There you'll see
SetJavaHome C:\Program Files\Java\jdk1.6.0_21
Change it to correct jdk path
With SQL Developer 19.1 (2018) I tried to install it with Java 11 but it failed, so for luck I still have an old java 8 version jdk8u202-b08.
If that happens you need to remove this folder
C:\Users\<username>\AppData\Roaming\sqldeveloper
And then run the exe again
C:\..\sqldeveloper-19.1\sqldeveloper.exe
Yes, Oracle just made a dumb installation package to makes us waste our time...good job guys!!!
The thing is, there should be a wizard/installer to configure the java path, this is because the jdk that comes pre-configured just doesn't work. Personally, I had to edit to the sqldeveloper.conf
under sqldeveloper\bin just has Nivas said and change the pre-configured path "SetJavaHome ../../jdk" to "SetJavaHome C:\Program Files\Java\jdk1.8.0_73" - for earlier versions of sqldeveloper it's a requirement to have Java8 and be sure that if you install SQLDeveloper x64 version that the java version that you set in your path is also x64.
If you have MacOS:
->SQLDeveloper didn't worked on 15.0.1.(Oracle has mentioned that Developer supports either Oracle JDK 8 or 11.)
->Install JDK8 https://www.oracle.com/java/technologies/javase/javase-jdk8-downloads.html (macOSx64)
->Go to cd /Users/amritshukla/.sqldeveloper/20.4.1
->Edit product.conf to add this line: SetJavaHome /Library/Java/JavaVirtualMachines/jdk1.8.0_291.jdk/Contents/Home
->Launch SQLDeveloper
This workaround helped many people (including me) during the last 12 months, so you must try it if you still have the problem:
Go to sqldeveloper\jdk\jre\bin folder and locate "msvcr100.dll"
Copy this dll to C:\Windows\System32 folder
Obs: you will need to provide administrator authorization to finish the file copy, so you must be logged on as a true windows administrator.
After copying the file, just try to start the sqldeveloper again. No reboot needed.
Hope this helps you too!
If you have MacOS :
Get the JDK home path
eg: /Library/Java/JavaVirtualMachines/jdk-11.0.4.jdk/Contents/Home
Go to
eg : cd /Users/sarath_sukumaran/.sqldeveloper/19.2.1
Edit product.conf to set SetJavaHome
eg : SetJavaHome /Library/Java/JavaVirtualMachines/jdk-11.0.4.jdk/Contents/Home
Re-open the SQL Developer and check the Java version from 'About Oracle SQL Developer' > Version
Adding a solution for Mac.
Edit this file: /Applications/SQLDeveloper.app/Contents/Resources/sqldeveloper/sqldeveloper/bin/jdk.conf
Uncomment the below line for SetJavaHome and give it the full path to JDK1.8. As of today, it does not work with JDK 11.
# By default, the product launcher will search for a JDK to use. If you wish
# to specify a JDK to use for all users of this install, uncomment the line
# below and set the path the the preferred JDK
#
# SetJavaHome /path/jdk
If you are using SQL developer > 4.x you can find this setting at this location on windows:
<USER HOME PATH>\AppData\Roaming\sqldeveloper\<VERSION>\product.conf
and change SetJavaHome to your JDK path. You can get the user home path on the command prompt using %homepath%.
Building on top of other answers:
For macOS 12.3.1 (M1 processor), SQL Developer 21.4.3, using sdkman to install Zulu 11.
mkdir -p ~/.sqldeveloper/21.4.3 (this directory didn't exist so I had to create it)
echo 'SetJavaHome $HOME/.sdkman/candidates/java/11.0.15-zulu/zulu-11.jdk/Contents/Home' >> ~/.sqldeveloper/21.4.3/product.conf
One solution is to install the latest Oracle SQL Developer. Link # SQL Developer Downloads . This installation will install and use the latest Java version 1.8.x.
The sqldeveloper.conf file resides at a newer location at ...\sqldeveloper\sqldeveloper\bin .
In order to change the version of SDK linked to your SQL developer, uninstall the other versions of SDK and install the required version. Once you install the required version, try running SQL developer it will automatically prompt you to attach the path. ANd you can provide the new path.
None of the sqldeveloper.conf had an entry in my case, and i downloaded another zip installation, which gave me same error for same JDK versoin, without me configuring anything, S
COMPANY=Oracle
PRODUCT=SQL Developer
VERSION=19.01000942042f
VER=19.1.0
VER_FULL=19.1.0.094.2042
BUILD_LABEL=094.2042
BUILD_NUM=094.2042
EDITION=
Issue: I was getting following error when try to open oracle sql developer
---------------------------
Oracle SQL Developer
---------------------------
Unable to launch the Java Virtual Machine
Located at path:
C:\Program Files\Eclipse Adoptium\jdk-8.0.322.6-hotspot\jre\bin\msvcr100.dll
---------------------------
OK
---------------------------
Resolution:
File msvcr100.dll was missing in the location *C:\Program
Files\Eclipse Adoptium\jdk-8.0.322.6-hotspot\jre\bin*.
Hence
copied that file from C:\Windows\System32\msvcr100.dll TO
C:\Program Files\Eclipse Adoptium\jdk-8.0.322.6-hotspot\jre\bin*
This helped me to lauch the oracle SQL developer.