JDK 1.8 is already installed in Windows 10 64 bit system. I am trying to create a scala project in Eclipse Scala IDE. Is says "Unbound classpath container: JRE System Library [JavaSE-1.8] in project.
While checking the Java build path-- Libraries-- JRE is coming outbound.
When I click to add JRE library, it has workspace default JRE (unbound)
While searching through preferences-- installed JRE--search. It gives no JREs.
If I try to add -- standard vm--directory ( JDK dir home). Ideally it should populate or detect all the jars but it doesn't detect.
I Tried running the application as 'Administrator' and it ran successfully.
Select your project and right click--> Build Path --> Configure Build Path -->Select Libraries--> Add Library-->JRE System Library--> Add the installed JRE here.
And if the JRE library is not getting selected, check the environment variables- JAVA_HOME and Path.
And to see if the java is correctly installed, try hitting this from CMD
java -version
I recently installed Spring boot on Ubuntu. When I run spring I get the following warning:
The JRE you are running Eclipse with appears to not be a JDK.
Spring Boot Live hovers will not work with a plain JRE.
The JRE you are running Eclipse with is: /usr/lib/jvm/java-11/openjdk-amd64
How can I get rid of this warning? Eclipse clearly points to the right JDK.
Even though the JRE path contained the letters JDK, on my system (Ubuntu 18.10) the JDK was not installed. Try:
sudo apt-get install openjdk-11-jdk openjdk-11-demo openjdk-11-doc openjdk-11-jre-headless openjdk-11-source
Please check this https://www.matsim.org/docs/devguide/eclipse/jdk
If no JDK is used for Eclipse, change it:
Quit Eclipse if it is running
Go to the Eclipse installation directory and open the file eclipse.ini in a text editor.
Search for the line -vmargs
Before the line -vmargs, add two lines:
On the first line, write -vm
On the second line, write the path to your JDK installation (usually something like: C:\Program Files\Java\jdk1.6.0_31\bin\javaw.exe on Windows
/Library/Java/JavaVirtualMachines/adoptopenjdk-11.jdk/Contents/MacOS/libjli.dylib on MacOS)
You can define the JRE/JDK on the Run/Debug Java Application config (if that is the way you are starting up your Spring Boot app):
Run/Debug -> Java Application -> JRE tab -> Alternate JRE
This would override any other default/IDE JRE settings.
The message is saying that Elipse is launched with a JRE instead of a JDK installation.
Edit your elipse.ini to point the your JDK installation:
For example, on iOS you should replace the line
/Users/user/.p2/pool/plugins/org.eclipse.justj.openjdk.hotspot.jre.full.macosx.x86_64_14.0.2.v20200815-0932/jre/lib/libjli.dylib
with
/Library/Java/JavaVirtualMachines/jdk-11.0.2.jdk/Contents/MacOS/libjli.dylib
I'm trying to install Eclipse, but I can't get the installer to start. It fails with
"Failed to create the Java Virtual Machine"
How can I resolve this?
Note: I'm on Mac.
Edit the file /Applications/Eclipse.app/Contents/Info.plist
There is a comment for use a particular JVM:
<key>Eclipse</key>
<array>
<!-- to use a specific Java version (instead of the platform's default) uncomment one of the following options,
or add a VM found via $/usr/libexec/java_home -V -->
<string>-vm</string><string>/Library/Java/JavaVirtualMachines/jdk8u192-b12/Contents/Home/jre/</string>
<string>-keyring</string>
<string>~/.eclipse_keyring</string>
</array>
It took me some time to figure this out as well. The main takeaway was eclipse does not support SDK Version 14 (as of eclipse 2020-03). That was not completely obvious to me.
Install a supported version (I used Homebrew to install SDK V8 🍺):
brew cask install adoptopenjdk/openjdk/adoptopenjdk8
If this is the only Java Version you have installed you should be fine and Eclipse should open up. If that is not the case and you have another Java Version installed. You have to tell Eclipse which Version of Java it should be using (see Step 2).
Tell Eclipse which Version to use by editing the /Applications/Eclipse.app/Contents/Info.plist file as described by Juan Ignacio Barisich and Brad Parks. That being the version you installed in step 1.
nano /Applications/Eclipse.app/Contents/Info.plist
# or
open /Applications/Eclipse.app/Contents/Info.plist
<key>Eclipse</key>
<array>
<string>-keyring</string>
<string>~/.eclipse_keyring</string>
<string>-vm</string>
<string>/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/jre/</string>
</array>
Disclaimer: Please bare in mind that those were the steps I took to get eclipse running again. Because I'm nowhere qualified to give a precise answer about this please take a look at the comments in case I got something wrong.
Edit: See Christian Fries answer who pointed out that all java versions 8 to 13 are supported by eclipse.
For me, I had to edit the eclipse-inst.ini file located here:
Eclipse Installer.app/Contents/Eclipse/eclipse-inst.ini
and add the path to my local java VM at the very top of the .ini file, which is here:
-vm
/Users/bparks/jdk/jdk1.8.0_162_x64/bin/java
If the Eclipse Installer.app file is in a DMG, right click on it, and copy it, then paste it into another folder. Then right click on that app file, and choose "Show Package Contents", to get into the files inside the application.
If you've already got Eclipse installed, and find it's throwing the same error, you could try a similar approach by editing the following file for Eclipse:
/Applications/Eclipse.app/Contents/Eclipse/eclipse.ini
On mac, you can get the full path you'd need to your java exe by running the following in a terminal, which will copy the path to your clipboard.
$ echo $(/usr/libexec/java_home)/bin/java | pbcopy
Note: The error "Failed to create the Java Virtual Machine" also exists with Eclipse 2020-03 (under some situations, see https://bugs.eclipse.org/bugs/show_bug.cgi?id=561273) and it is not required to use Java 8 (with Eclipse 2020-03).
For the impatient:
You can run Eclipse or the Eclipse Installer with a given VM without changing eclipse.ini by starting it via a command line:
Open Terminal an run:
open PATHTOECLIPSEINSTALLER/Eclipse\ Installer.app --args -vm /Library/Java/JavaVirtualMachines/NAMEOFJDK/Contents/Home/bin
where PATHTOECLIPSEINSTALLER is the path of the folder where Eclipse Installer is located and NAMEOFJDK is the name of the folder with the JDK (11, 12, 13).
For example:
open Downloads/Eclipse\ Installer.app --args -vm /Library/Java/JavaVirtualMachines/jdk-11.0.2.jdk/Contents/Home/bin
In the installer you may select the VM used by Eclipse. Use a compatible VM here and the installer will modify the eclipse.ini for you.
Explanation TL;DR
To clarify this issue:
Eclipse - say Eclipse 2020-03 - runs with Java 11, Java 12, Java 13, but does not run with Java 14. It fails with the message "Failed to create the Java Virtual Machine". This happens for the installer and for Eclipse itself.
You can download Eclipse without the installer from here: https://www.eclipse.org/downloads/packages/
Explanation:
On macOS, if you start a freshly installed Eclipse, it will use the default JVM. The default JVM is obtained by running /usr/libexec/java_home.
This program /usr/libexec/java_home will find the installed JDK with the highest version as default. That is, if you have JDK 14 installed and run Eclipse 2020-03, you will see this error.
Solution
Summarising some other answers here, there are three options:
Once you have removed JDK 14 from /Library/Java/JavaVirtualMachines/ the error will be gone.
If you like to have JDK 14 installed, start the installer with a different JDK via the command line open Path-to-Eclipse-Installer/Eclipse\ Installer.app --args -vm /Library/Java/JavaVirtualMachines/NAMEOFJDK/Contents/Home/bin
You may edit the eclipse.ini (as suggested in other answers) to use a specific JVM.
Referring to Marseille Joseph
https://www.eclipse.org/forums/index.php?t=msg&th=1102885&goto=1823113&#msg_num_13
This worked for me!
Their solution didn't require uninstalling jdk14 or to editing the eclipse.ini file. Instead, do this:
cd /Library/Java/JavaVirtualMachines/jdk-14.jdk/Contents/MacOS/
sudo rm /Library/Java/JavaVirtualMachines/jdk-14.jdk/Contents/MacOS/libjli.dylib
sudo ln -s /Library/Java/JavaVirtualMachines/jdk-14.jdk/Contents/Home/lib/libjli.dylib libjli.dylib
I started facing the same problem in mac suddenly after updating to macOS Monterey, So I just did the following steps:
Then go to Contents/Eclipse/eclipse.ini file and open it with any text editor and you will see the following:
Add below line before -vmargs as shown in above image:
-vm /Library/Java/JavaVirtualMachines/jdk1.8.0_171.jdk/Contents/Home/bin/java
This below line will be different for all the users:
/Library/Java/JavaVirtualMachines/jdk1.8.0_171.jdk/Contents/Home/bin/java
and you can just get this line copied to your clipboard using this command in terminal:
$ echo $(/usr/libexec/java_home)/bin/java | pbcopy
Similarly will be for STS:
Then go to Contents/Eclipse/SpringToolSuite4.ini as shown below and open with any text editor app.
You will see the following:
Just add the same line that you added for Eclipse in the above steps:
delete all java folder inside /Library/Java
then install a new jdk from
https://adoptopenjdk.net/
which will install at
/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk
then try reinstalling eclipse a
I had the same problem in my mac. Here is my solution.
First: I've uninstall all the versions of jdk, because I've try a lot of options.
To do this, you need to go to Library/Java/JavaVirtualMachines
and delete all the folders.
Second: Install jdk 1.8 here is a link to download this version:
jdk 1.8
Third: Install eclipse 2020-03 and thats all.
If you want to use JDK 14, you need to follow this steps:
Open eclipse
Go to Help > Install new software
In the Install window copy the following link in Work with https://download.eclipse.org/eclipse/updates/4.15-P-builds/
Select the third option show in the picture below
Then, click "next" and finish the install
Now you have to change the options, go to Preferences (command + ,) > Java > Compiler and search the version 14. Before this step you need to install jdk 14 (link) Perhaps eclipse would suggest you to change to the correct JREs, for this you need to go to Java > Installed JREs and add the correct version. When you click add you need to choose he JRE type, in my case I use a MacOS X VM and Standard VM, then you have to choose the directory (/Library/Java/JavaVirtualMachine/jdk-14/Contents/Home and click open you could give a JRE Name and finish eclipse will be restart and now you can use eclipse with java 14.
This works for me, I hope you have understood me.
Go to /Library/Java/JavaVirtualMachines
Delete all version except one in use.
Install jdk 8 from brew work for me. You can get the instruction on installing Jdk 8 from HomeBrew here How to install Java 8 on Mac
I met this problem with eclipse-java-2020-03-M2-macosx-cocoa-x86_64, and opendjdk11. The latest eclipse installer at the moment also complained same error.
After I switched back to openjdk8, everything goes well...
For Windows OS:
open eclipse.ini in the Eclipse program folder
add the below lines at the top of the file
-vm
path-to-java-bin\javaw.exe (for example: C:\Program Files\Java\jdk-11.0.10\bin\javaw.exe)
I mounted eclipse dmg file and copied eclipse inside Applications. Then I tried to modify file Info.plist located inside Contents as below, but was getting that this file Info.plist is readonly error. I noticed that I already have read and write permission but still it was giving me that read only error. Then I moved the contents of Eclipse to some other local folder and then edited Info.plist, it did not give me readonly error.
<array>
<string>-vm</string><string>/Library/Java/JavaVirtualMachines/jdk1.8.0_65.jdk/Contents/Home/bin/java</string>
<string>-keyring</string>
<string>~/.eclipse_keyring</string>
</array>
Finally I am able to open eclipse.
I have followed the instructions to direct eclipse to the virtual machine path of the JDK but for some reason when i clean the project and run make and deploy it shows that ant is still pointing to the jre in program files rather then the JDK specified and selected following -
Preferences > Java > Installed JRE's > Add... For 'JRE Type' select 'Standard VM' > Next > Directory: select your JDK directory (instead of JR)
Is there something im missing? Im using windows 10 64 bit.
The JRE/JDK used by Ant runs is configured in the run configuration for Ant.
Look in 'Run > External Tools > External Tools Configurations...' and find your Ant build. Look in JRE tab for the configuration.
I've been having
Exception in thread "main" java.lang.UnsupportedClassVersionError: Unsupported major.minor version 51.0
So I looked it up, and then updated both my JRE and JDK to 8th version.
But above the console, it displays:
System/Library/Java/JavaVirtualMachines/1.6.0 JDK ....
How do I make my Eclipse run in 8th version of JDK and JRE?
And do I need to change anything in my projects after upgrading?
Thanks in advance!
In Eclipse:
Select pull-down menu: Windows > Preferences
On left, select Java > Installed JREs
Click "Add..." and browse to your JDK/JRE folder
Rename if desired, e.g. change "jdk1.8.0_51" to "jdk1.8"
Repeat if you want access to more JDK/JRE versions in Eclipse workspace
Check the JRE you want to be the default for your projects
On left, select Java > Compiler
Set compliance level to match the default JRE
Note: If your projects don't use the workspace default, then you need to update the project Properties.
Eclipse itself is running with the default Java, i.e. the java on your PATH. If you want Eclipse to run using a different JDK/JRE, you need to edit the eclipse.ini file. See the link provided by Tarun Gupta.
In Eclipse you have to change the Java location like below steps
Check for:
1) Proper java environment variable setup.
2) Right click on Project name in Project Explorer in Eclipse. Click on Build Path -> Configure Build Path. Check for proper path for Java Build Path.
Also check whether the latest version of Java is selected in Java Compiler -> Compiler Compliance Level.
3) Check from command line which Java is installed by typing java -version or java.
(Sometimes Java installed from command line in Linux systems installs old versions)