Develop Reference

Eclipse - "Incompatible JVM. Version 1.8.0_261 of the JVM is not suitable for this product. Version: 11 or greater is required"

I just downloaded Eclipse as an archive and installed newest 64 bit Java and 64 bit Java Development Kit 15. And I get this error. I installed JDK 11 after and got the same error.
How can I make this work?

The Java to run Eclipse can be specified in the eclipse.ini file (see Eclipse wiki: eclipse.ini - Specifying the JVM). Add the following two lines directly before the line -vmargs and adapt the path to your Java 11 or higher 64-bit Java VM installation directory:
-vm
C:\Program Files\AdoptOpenJDK\jdk-14.0.2.12-openj9\bin\javaw.exe
Alternatively, you can put the Java VM into the jre subdirectory of the Eclipse installation or, if you do not install Eclipse but upgrade it, install Java 11 or better Java 14 as plugin before the upgrade from Eclipse JustJ (use JustJ OpenJDK Hotspot JRE Complete, not Base or Minimal).
Please note, that even if you run Eclipse with Java 11 or higher, Eclipse 2020-09 (4.17) still supports to code in Java 14, 13, 12, 11, 10, 9, 8 and even much older versions (down to Java 1.1). Java 15 can be installed via Marketplace.

I got it resolved by adding the vm parameters in the Eclipse configuration file at the top.
In text format
-vm
C:\Program Files\Java\jdk-11.0.9\bin\javaw.exe
-startup
plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.1.1300.v20200819-0940
-product
org.eclipse.epp.package.jee.product
-showsplash
org.eclipse.epp.package.common
--launcher.defaultAction
openFile
--launcher.defaultAction
openFile
--launcher.appendVmargs
-vmargs
-Dosgi.requiredJavaVersion=11
-Dosgi.instance.area.default=#user.home/eclipse-workspace
-XX:+UseG1GC
-XX:+UseStringDeduplication
--add-modules=ALL-SYSTEM
-Dosgi.requiredJavaVersion=11
-Dosgi.dataAreaRequiresExplicitInit=true
-Xms256m
-Xmx2048m
--add-modules=ALL-SYSTEM

This works for me. Make sure you add -vm(Path_Of_Jdk) on top of -vmargs of eclipse.ini
E.g.,
-vm
C:\Program Files\Java\jdk-11.0.10\bin\javaw.exe
-vmargs
-Dosgi.requiredJavaVersion=11

I was getting this error on a Linux OS, but the following solution should work for all OSes.
Step 1: Open a command prompt
Type: java -version
You will see something like this -
openjdk version "1.8.0_275"
OpenJDK Runtime Environment (build 1.8.0_275-8u275-b01-0ubuntu1~16.04-b01)
OpenJDK 64-Bit Server VM (build 25.275-b01, mixed mode)
(may vary depending on your computer and OS)
Step 2: open the eclipse.ini file
The file is located at C:\Users\Yourusername\eclipse\java-2019-12\eclipse
Locate the following line -
-Dosgi.requiredJavaVersion=11
Change it to
-Dosgi.requiredJavaVersion=1.8
and restart Eclipse. It is there twice so change at both places. You may try to give the Java version specific to your system (from the output of step 1). This has worked for me.

To resolve the incompatible JVM Exception, specify the specific JVM for Eclipse.
Open the eclipse folder and look for the eclipse.ini file.
Before the -vmargs option, add the -vm option.
Find and copy the path of the javaw.exe file in the JDK folder
In the eclipse.ini file, add the path of the javaw.exe file to the new line following the -vm option.
Restart Eclipse after saving the eclipse.ini file.
As a result, the eclipse.ini file looks like this:
-startup
plugins/org.eclipse.equinox.launcher_1.6.200.v20210416-2027.jar
--launcher.library
C:\Users\Admin\.p2\pool\plugins\org.eclipse.equinox.launcher.win32.win32.x86_64_1.2.200.v20210429-1609
-product
org.eclipse.epp.package.java.product
-showsplash
C:\Users\Admin\.p2\pool\plugins\org.eclipse.epp.package.common_4.20.0.20210612-1200
--launcher.defaultAction
openFile
--launcher.appendVmargs
-vm //NEW
C:\Program Files\Java\jdk-16\bin\javaw.exe //NEW
-vmargs
-Dosgi.requiredJavaVersion=11
-Dosgi.instance.area.default=#user.home/eclipse-workspace
-Dsun.java.command=Eclipse
-XX:+UseG1GC
-XX:+UseStringDeduplication
--add-modules=ALL-SYSTEM
-Dosgi.requiredJavaVersion=11
-Dosgi.dataAreaRequiresExplicitInit=true
-Dorg.eclipse.swt.graphics.Resource.reportNonDisposed=true
-Xms256m
-Xmx2048m
--add-modules=ALL-SYSTEM
-Declipse.p2.max.threads=10
-Doomph.update.url=http://download.eclipse.org/oomph/updates/milestone/latest
-Doomph.redirection.index.redirection=index:/->http://git.eclipse.org/c/oomph/org.eclipse.oomph.git/plain/setups/

I had the same issue and got it to work by reinstalling using the installer from https://www.eclipse.org/downloads/ which includes a JRE.

I had the same problem and I downloaded another version of Java EE Eclipse. I got the Eclipse 2020-06 (4.16):
https://www.eclipse.org/downloads/download.php?file=/technology/epp/downloads/release/2020-06/R/eclipse-jee-2020-06-R-win32-x86_64.zip
After downloading it, it worked.

I had the same issue and the following easy steps fixed the issue
Step - 1
Go to the file location of the eclipse and open eclipse.ini in editable format
Step - 2
Go to the java folder location where you find javaw.exe
In my case : C:\Program Files\Java\jdk-11.0.11\bin\javaw.exe
Step - 3
Then paste the following before tag -vmargs inside eclipse.ini file
-vm
C:\Program Files\Java\jdk-11.0.11\bin\javaw.exe
The below image shows in brief

I found this topic while having this issue starting dBeaver on Manjaro/Arch Linux with the same error. All provided suggestions did not work in my case.
My solution was to set the JVM as per this post on the Manjaro Forum:
checked the installed versions
ls /usr/lib/jvm
set latest version (16 in my case)
sudo archlinux-java set java-16-jdk

I downloaded JDK from https://www.oracle.com/java/technologies/javase-jdk15-downloads.html and put the unpacked contents to jre subdirectory of Eclipse's installation path - there is a path eclipse/jre/bin/javaw.exe. Eclipse picks it up automatically over any other installation.

Window => Preferences => Java => Installed JREs => Add
(browse for AdoptOpenJdk 11) as shown in picture
Mark as default (Only Select this Version => Apply => Save)

I had the same problem. Uninstall Java from the control panel and restart your IDE (Eclipse or IntelliJ IDEA).

I also faced the same issue, but I did not resolve it no matter what.
Then it got resolved installing the below link.
https://www.eclipse.org/downloads/download.php?file=/oomph/epp/2020-09/R/eclipse-inst-jre-win64.exe

For MacOS users:
If you see this error but already have version 11 or greater, you need to specify your jdk bin folder in .ini file.
I observed this error for Eclipse Mat(Memory Analyzer), I guess this procedure is similar for Eclipse IDE.
Follow these steps to find .ini file (You need to find/know your jdk bin folder before these steps!)
Go to Applications folder
Right click on application and click on "Show Package Contents"
Go to Contents/Eclipse
Open MemoryAnalyzer.ini with a text editor
Find "-vmargs" in MemoryAnalyzer.ini
Add this before "-vmargs"
-vm
/Library/Java/JavaVirtualMachines/jdk-11.0.12.jdk/Contents/Home/bin
You can start your application after saving changes in .ini file.

Just add the text above the -startup in C:\Users\username\eclipse\java-2022-09\eclipse\eclipse.ini
-vm
C:\Program Files\Java\jdk-19\bin\javaw.exe
-startup
plugins/org.eclipse.equinox.launcher_1.6.400.v20210924-0641.jar
This change worked for me

For Ubuntu users, refer to the answer https://stackoverflow.com/a/64049648/14489697 by howlger. Add the following lines in file eclipse.ini before -vmargs:
-vm
/usr/lib/jvm/adoptopenjdk-14-openj9-amd64/bin/java
Above is the Java install location. Change this according to yours.
I'm using,
Eclipse IDE for Enterprise Java Developers (includes Incubating components)
Version: 2020-12 (4.18.0)
Build id: 20201210-1552
OS: Linux, v.5.4.0-42-generic, x86_64 / gtk 3.22.30
Java version: 14.0.2

If you're looking to resolve this without changing eclipse.ini file, just reinstall eclipse IDE. It can be the same version or newer one.
I have reinstalled the same version and it's worked without issues, no needing of changing eclipse.ini.

Thank you .
This one worked for me
-vm
C:\Program Files\Java\jdk-16\bin\javaw.exe
added these lines in eclipse.ini file

Adding an additional answer here as I was not able to start my eclipse even after updating the eclipse.ini file with the path of javaw.exe under the JDK. I was running into an exception that started as
Java was started but returned exit code=1
I had to point to the java.dll file as suggested in https://wiki.eclipse.org/Eclipse.ini#-vm_value:_Windows_Example.
So my latest eclipse.ini looked like
-vm
C:\Program Files\Eclipse Adoptium\jre-11.0.14.101-hotspot\bin\server\jvm.dll
Also, when I installed JDK 11 it did not come with JRE. I had to download the JRE separately from https://adoptium.net/releases.html?variant=openjdk11&jvmVariant=hotspot
Hope someone finds this useful.

Check out your java version and update path and version...
echo %JAVA_HOME%\bin\javaw.exe
C:\Program Files\Java\jdk-18.0.1.1\bin\javaw.exe
-vm
C:\Program Files\Java\jdk-18.0.1.1\bin\javaw.exe
-vmargs
-Dosgi.requiredJavaVersion=18

I just updated the java 11 path in system environmental variables and able to open my eclipse. My eclipse version is 2021-12 (4.22.0)

Eclipse and Java SDK [duplicate]

I am using Eclipse for developing BlackBerry Applications. I have JDK/JRE 7 currently on my computer, but that makes the BlackBerry plugins crash. Actually is a known issue and the only thing need to be done is run Eclipse with JDK/JRE 6 instead of 7.
I downloaded and installed version 6. However I am pretty sure Eclipse still uses 7. I had the same problem a year ago and I remembered I had to configure some System Variables and it worked, but I can't really find the solution now.
Any idea on this one? Important! I don't want to compile in version 6, which means I just have to choose the Java version through Eclipse. What I need is Eclipse to start with version 6.

Open eclipse config file eclipse.ini in your Eclipse folder.
Add -vm yourPath\Java\jre6\bin\javaw.exe like:
-startup
plugins/org.eclipse.equinox.launcher_1.3.0.v20120522-1813.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.1.200.v20120522-1813
-product
org.eclipse.epp.package.java.product
--launcher.defaultAction
openFile
--launcher.XXMaxPermSize
256M
-vm
C:\Java\jre6\bin\javaw.exe
...
If the path contains spaces there is no need to escape them, see the Eclipse Wiki for more specs. The -vm option and the path must be on separate lines. The -vm option must come before the -vmargs option. On Linux, the path would typically be /bin/java instead of the Windows path shown above. You must use the Java and Eclipse versions must match (i.e. 32-bit Eclipse runs on 32-bit Java and 64-bit Eclipse runs on 64-bit Java).

Note that option -vm C:\Java\jre6\bin\javaw.exe should be right before -vmargs. Otherwise you'll get 'Error: Could not create the Java Virtual Machine. Error: A fatal exception has occurred. Program will exit'

Do this:
1. Go to the folder where eclipse is installed (the one that has the eclipse.exe program in)
2. Open the text file eclipse.ini with notepad or something similar
3. Add the following lines to specify the JVM location using the -vm argument
-vm
c:/jre/bin/javaw.exe
Now start eclipse in the usual way.
Make sure to position the -vm argument before -vmargs, since the latter is passed to the VM on startup it will be too late to set the VM after this.
More info is available on the Eclipse wiki
You could also have changed the system path as per one of the other answers but this would change the JVM being used for the whole system. If you use the eclipse.ini settings it allows everything else to use the latest JVM.

Many hints given already. Anyway I will just provide the recommended way of doing it which might help for future reviews of that question:
Use the eclispe.ini file (folder where the eclipse binary resides)
Add the -vm option with the path of the jre to startup with
i.e Windows
-vm
C:\Java\jdk1.6.0_45\jre\bin\javaw.exe
i.e Linux
-vm
/opt/sun-jdk-1.6.0.02/bin/java
The -vm option must occur after the other Eclipse-specific options (such as -product, --launcher.*, etc), but before the -vmargs option, since everything after -vmargs is passed directly to the JVM.
The -vm option and its value (the path) must be on separate lines.
The value must be the full absolute or relative path to the Java executable, not just to the Java home directory.
see: the eclipse.ini authoring guidelines from eclipse wiki

Since none of the answers worked for me this is my solution:
I downloaded java 6 and i installed it. Then in the program files , inside the folder of java , i copied the folder jre6. I pasted it inside the eclipse folder and renamed it jre.
Thats it! When inside the eclipse installation folder your have a folder named jre , then the java in there is the java that eclipse will run with.
Thank you all for your answers!

These two options worked for me on Windows:
Edit eclipse.ini
-vm
C:/Java/jdk1.7.0_71/jre/bin
-vmargs
...
Copy jre folder to eclipse folder.
So after the copy I have C:\eclipse\jre folder which is a copy of C:\Java\jdk1.7.0_71\jre

If you want to make sure you are running you java apps in Windows 7 with an specific java version:
1 - Check out what which version is running by default. Run cmd to go to the console and type: java -version
C:>java -version
java version "1.6.0_45" Java(TM) SE Runtime Environment (build
1.6.0_45-b06) Java HotSpot(TM) Client VM (build 20.45-b01, mixed mode, sharing)
2 - Change the default jdk by changing the path. Example here. Make sure you java.exe from your desired jdk is before any other java.exe from any other JDK in the path.
ex. in JDK 1.6 you java.exe should be here C:\java\jdk1.6\bin\java.exe.
Once you have changed the path, open a new console and verify again which jdk version you are running.
3 - Make sure in eclipse.ini param -vm another jre version is not set.

I modified eclipse.ini file as follows (added my local JDK path) and it fixed eclipse loading issue.
-vm
C:\Program Files\Java\jdk1.8.0_251\bin

I too faced same issue while running eclipse with different version then default on the system.
I created a symlink of required jre directory under eclipse directory and then it was all working.
For windows user: symlink is similar to creating shortcut
Hope it helps you too.

Eclipse Returned Exit Code 1 Eclipse INI File [duplicate]

This is a picture of the error code
Here is the content of the error message:
Java was started but returned exit code=1
C:\WINDOWS\system32\javaw.exe
-Dosgi.requiredJavaVersion=1.6
-Xms40m
-Xmx768m
-Declipse.buildId=v22.0.5-757759
-XX:MaxPermSize=256m
-jar
D:\Programming\adt-bundle-windows-x86_64-20130729\eclipse\\plugins/org.eclipse.equinox.launcher_1.3.0.v20120522-1813.jar
-os win32
-ws win32
-arch x86_64
-showsplash
-launcher
D:\Programming\adt-bundle-windows-x86_64-20130729\eclipse\eclipse.exe
-name Eclipse
--launcher.library
D:\Programming\adt-bundle-windows-x86_64-20130729\eclipse\\plugins/org.ecl
ipse.equinox.launcher.win32.win32.x86_64_1.1.200.v20120913-144807\eclipse_1503
.dll
-startup
D:\Programming\adt-bundle-windows-x86_64-20130729\eclipse\\plugins/org.eclipse.equinox.launcher_1.3.0.v20120522-1813.jar
--launcher.overrideVmargs
-exitdata 1c50_48
-product com.android.ide.eclipse.adt.package.product
-vm C:\WINDOWS\system32\javaw.exe
-vmargs
-Dosgi.requiredJavaVersion=1.6
-Xms40m
-Xmx768m
-Declipse.buildId=v22.0,5-757759
-XX:MaxPermSize=256m
-jar
D:\Pragramming\adt-bundle-windows-x86_64-20130729\eclipse\\plugins/org.eclipse.equinox.launcher_1.3.0.v20120522-1813.jar
I just downloaded and dearchived android SDK for Windows. I`m currently using W8 64x.

The error message points to a problem with your Java version. Do you have a JDK installed?
Try adding the following (noting the new line):
/!\ make sure, that the -vm option occurs before the -vmargs command.
Everything after -vmargs is passed directly to the JVM.
-vm
c:/wherever/java/jdk1.6.0_21/jre/bin/server/jvm.dll
-vmargs...
...to your eclipse.ini file, pointing to the JDK you want to use, and check that the required Java version is at least as new as your JDK. This is the path for a Windows system. More on paths can be found here (scroll down).
If you don't know where the eclipse.ini file is: regularly it is in the folder of your eclipse.exe.
Edit2: #KadoLakatt: the reason why installing the latest Java Version worked for you is because Eclipse checks the standard path for a JVM if it doesn't find a -vm entry (see here). However I'd not recommend that, since you might be wrong guessing the JVM used. If you update Java (automatically?) you might run into problems in your Eclipse wondering what you might have changed. Better set it to a specific folder in your eclipse.ini to be certain.

I received this error out of the blue. Eclipse stopped working even though I made no config changes and did not install any new jdk's.
Here was my eclipse.ini file :
--clean
-startup
plugins/org.eclipse.equinox.launcher_1.3.0.v20130327-1440.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.200.v20130807-1835
-product
org.eclipse.epp.package.jee.product
--launcher.defaultAction
openFile
--launcher.XXMaxPermSize
256M
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
-vm
C:/Program Files (x86)/Java/jre7/bin/javaw.exe
--launcher.appendVmargs
-vmargs
-Dosgi.requiredJavaVersion=1.6
-Xms40m
-Xmx1024m
To get Eclipse to start successfully I removed
-vmargs
-Dosgi.requiredJavaVersion=1.6
-vm
C:/Program Files (x86)/Java/jre7/bin/javaw.exe
So here is my updated file :
--clean
-startup
plugins/org.eclipse.equinox.launcher_1.3.0.v20130327-1440.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.200.v20130807-1835
-product
org.eclipse.epp.package.jee.product
--launcher.defaultAction
openFile
--launcher.XXMaxPermSize
256M
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
-Xms40m
-Xmx1024m
I have no idea why removing osgi.requiredJavaVersion=1.6 fixed this as my jvm version is 1.6. From the doc http://help.eclipse.org/indigo/index.jsp?topic=%2Forg.eclipse.platform.doc.isv%2Freference%2Fmisc%2Fruntime-options.html
osgi.requiredJavaVersion
The minimum java version that is required to launch Eclipse. The default value is "1.4.1".
I think my java version was set correctly. Anyway Eclipse starts and runs for me now......

it can be like this as well:
-vm
C:\Program Files\Java\jre6\bin\server\jvm.dll

Working combinations of OS, JDK and eclipse bitness.
32-bit OS , 32-bit JDK , 32-bit Eclipse (32-bit only)
64-bit OS , 32-bit JDK , 32-bit Eclipse
64-bit OS , 64-bit JDK , 64bit Eclipse (64-bit only)
Kindly use 1 of the above combinations.

Adding -vm parameters works for me.
-vm
C:\Program Files\Java\jdk1.7.0_45\jre\bin\server\jvm.dll

For those of you who tried all the above answers without any success, try lowering your -Xms value. I am required to support an older Eclipse (Weblogic Eclipse 10.3.6) - I had the following .ini on my Windows 7 machine and my Windows Server 2008 R2 Enterprise VM (the Java version below points to a 32-bit Java) that had worked and were working perfectly, respectively.
-vm
C:/Java/Java7/jdk1.7.0_79/bin/javaw.exe
-startup
plugins/org.eclipse.equinox.launcher_1.3.0.v20120522-1813.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.200.v20120522-1813
-showsplash
org.eclipse.platform
--launcher.defaultAction
openFile
-vmargs
-Xms1024m
-Xmx1024m
-XX:MaxPermSize=256m
-Dsun.lang.ClassLoader.allowArraySyntax=true
-Dweblogic.home=C:/Oracle/Middleware/wlserver_10.3
So a 32-bit Java for a 32-bit Eclipse, but still exit code 1. Based on all answers I had seen here, and the only change being a new laptop with Windows 10, the only possible explanation was that the new OS and the Eclipse were disagreeing on something. So I started playing around with each of the values, and it worked when I lowered both Xms and Xmx to 512m. I have a hunch that possibly the new Windows OS is preventing a higher initial heap size based on some run condition (the higher -Xms does work on Windows 10 on all other similar devices I came across) - so any other explanation is welcome. Meanwhile following is the only value I tweaked to successfully launch Eclipse.
-Xms512m

I've encountered similar problems. The reason is that the path to my eclipse includes Chinese characters. Once those characters are deleted, the problem is solved. Please check if there are characters other than English in your path.

I had same issue in my windows 7, 64-bit machine. Then I downloaded and installed 64 bit jdk for Java(which includes jre). This solved the issue.

I too faced the similar issue , not solved after adding the command in eclipse.ini file. My root cause is different. I was experimenting on sequence diagrams using objectaid. This is throwing an exception and disturbed my workspace. You may have different issue when working on new plugins. Better you check the log file located in your project work-space C:\path\to\workspace\.metadata\.log

This can be resolved by adding the following line to the eclipse.ini file
-XX:-UseCompressedOops

I had the same issue which was caused due to crash shutdown of my windows 10. Earlier in the path I had Oracle path ie the path inserted by Oracle at the time of installation of JDK. I removed it and changed the path to the JDK location. This solved the problem.

Mine is a 64 bit system with 64bit java installation.
what worked for me was the following:
Goto the eclipse installation directory
right click the eclipse icon and click "send to desktop as shortcut"
Then right click on the shortcut icon in the desktop and then > properties > shortcut tab
In the target field point it to the correct java 64 bit installations home path using the vm argument with the java_home path enclosed in quotes like so :
D:\Scala_eclipse\eclipse.exe -vm "C:\Program Files\Java\jdk1.8.0_11"
This almost always solves all my Eclipse (scala eclipse as well) related problems.
As mentioned in the answer , please make sure you are using the right combination of eclipse and java

If you have java 8 installed it might be related to the following issue:
https://support.oracle.com/knowledge/Middleware/2412304_1.html
Simply removing/renaming the "C:\Program Files (x86)\Common Files\Oracle\Java\javapath" worked for me.

Directly changing eclipse file is not a good idea, no matter facet or ini, unless it could be changed in eclipse. Had the same problem, with jdk1.8 installed. Change it to jdk 1.7.
Besides, according to https://wiki.eclipse.org/Eclipse/Installation, both LUNA and MARS need 1.7. So just ensure you have it installed.

1 ) Open the SpringToolSuite4.ini File.
2 ) Search For the openFile.
3 ) Provide the jvm.dll file location in SpringToolSuite4.ini
4 ) Note : Provide the New Line between -vm and your jvm.dll file location path.as shown below.
openFile
-vm
C:\Program Files\Java\jre8\bin\server\jvm.dll
-vmargs
-Dosgi.requiredJavaVersion=1.8
-Xms256m

i had Java Run time environment and Java SDK both on my machine. I removed Java Run time environment and it resolved my error.
Earlier this error, i was using elipse with Java SDK only and later had installed JRE specifically for one need.

just to add here...For the guys those who still couldn't start eclipse due same error, please check eclipse.ini file again and see have you forgot to put M after memory size.
For example:
-Xmx1024
or
-Xmx1024MB
or
-Xmx1024 M
or
-Xmx1024 mb
or
-Xmx1024mb
are incorrect, it should be -Xmx1024M. I have been trying different ideas from SOF and from other forums, and in this cut/paste I forgot that I missed M (such a little thing to miss), so I thought I should share. If it works for some of you please up-vote.

I had this issue recently, but I hadn't changed any java or updated the java version, May be this issue happened because of crash shutdown of the system.
And after reading a couple of answers here I decided to change the java version from 1.6 to 1.7 in the eclipse.ini file.
-vmargs
-Dosgi.requiredJavaVersion=1.6
After this change the Eclipse started well and it worked. Since I didnt had changed anything i decided to change it back to 1.6 to what it was originally.
Then I started eclipse and guess what it worked. So Looks like in my case just touching/modifiying the eclipse.ini file worked.
I hope this answer is helpful to somebody.

If none of the solutions works, please check if you have more than one version of java installed on your machine. Please keep only one version which you prefer and everything should work fine.

None of the above answers helped for me. I discovered that, in general, an error like that could mean that your eclipse.ini has an invalid entry. So, all the above answers could be correct, depending on your particular case. In my case, it turned out I added a locale argument with a typo in it.

I tried to change the path in the parameter -vm, but it did not help. Then I deleted the parameter -vm and -vmargs from the eclipse.ini.
It worked for me

My path of -javaagent argument was having Spacial characters like '&'. I placed the Lambok jar in different place and gave the path to that place. It worked for me.
previously it was
-javaagent:C:\Software & Tool\lambok.jar
i changed it to
-javaagent:C:\Labmok\lambok.jar

Please check your computer and if Java JRE not install download and install it.
https://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133155.html
If install please check is it 32 bit or 64 bit as per your operating system
To check for 32 or 64-bit JVM, run:
$ java -d64 -version
$ java -d32 -version
Error: This Java instance does not support a X-bit JVM.
Please install the desired version.

Open the Eclipse Installation Folder on Windows Machine
Find the eclipse.ini
Open the eclipse.ini File and add the below two lines before -vmargs
-vm
C:\Users\IshaqKhan\jdk1.8.0_173\bin\javaw.exe

This work for me in eclipse js and eclipse php:
-vm
C:/java/jdk-11.0.1/bin/javaw.exe
--launcher.appendVmargs
-vmargs

I had a similar issue. I opened my eclipse.ini file and noticed that I configured at the end some lines for the lombok library in the past. The path to my lombok jar file was no more valid. After correcting it, my eclipse was working like a charm again. In conclusion, my piece of advice would be to verify that all the paths configured in this file are valid.
eclipse.ini :
-...
-javaagent:C:\some\path\to\lombok.jar
-Xbootclasspath/a:C:\some\path\to\lombok.jar

JAVA Path could be incorrect
Trying above solution didn't help me.
So i checked java --version on command prompt, which gave virtualization conflict. It seemed installation of virtualization software on system had messed up environment variables.
Hence I checked JAVA_HOME which was on correct path, then checked system variable PATH which had correct JAVA bin path as well, so removed 'C:\Program Files (x86)\Common Files\Oracle\Java\javapath' and checked java --version on command prompt again, which gave correct value and also fixed above issue of eclipse start.

On Windows 10, removing
-XstartOnFirstThread
from the eclipse.ini fixed the issue for me

Go to eclipse folder and then go Configuration Setting file
change the below path under -vm tag in config file
Note- you need to mention new java path with bin and then javaw.exe like below
-vm
java path/bin/javaw.exe
It should work. Thanks.

if it says
c:/program files/java/jre/bin/server/jvm.dll not found
then copy the jre from jdk folder and paste it outside the jdk folder . and then try again...

Setting up Eclipse with JRE Path

I have downloaded and extracted Eclipse. I have Eclipse in the following directory: C:\Applications\eclipse. When I try and run the executable , I get the following message :
I currently have the following folder:
C:\Program Files (x86)\Java\jre7
Do I need to set up some environment variables for my Windows 7 OS to get Eclipse to run ? If so , may I please have some help to do this ? If not , can I please have some help to get Eclipse to run .
EDIT
I have changed the shortcut to include the path to the Virtual Machine , and am now getting this error :
http://www.canning.co.nz/Eclipse/Eclipse_Message2.png

You can add this line to eclipse.ini :
-vm
D:/work/Java/jdk1.6.0_13/bin/javaw.exe <-- change to your JDK actual path
-vmargs <-- needs to be after -vm <path>
But it's worth setting JAVA_HOME and JRE_HOME anyway because it may not work as if the path environment points to a different java version.
Because the next one to complain will be Maven, etc.

Add this to eclipse.ini:
-vm
your_java_path\bin\javaw.exe
...but be aware that you must add these lines before -vmargs

I have several version of JDK (not JRE) instaled and I launch Eclipse with:
C:\eclipse\eclipse.exe -vm "%JAVA_HOME%\bin\javaw.exe" -data f:\dev\java\2013
As you can see, I set JAVA_HOME to point to the version of JDK I want to use.
I NEVER add javaw.exe in the PATH.
-data is used to choose a workspace for a particular job/client/context.

Add the following -vm D:/Java/jdk1.6.0_30/bin/javaw.exe in the begin of eclipse.ini like this :
-vm
D:/Java/jdk1.6.0_30/bin/javaw.exe
-startup
plugins/org.eclipse.equinox.launcher_1.3.0.v20130327-1440.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.1.200.v20130807-1835
-product
org.eclipse.epp.package.jee.product
--launcher.defaultAction
openFile
--launcher.XXMaxPermSize
1024M
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
1024m
--launcher.defaultAction
openFile
--launcher.appendVmargs
-vmargs
-Dosgi.requiredJavaVersion=1.6
-Xms1024m
-Xmx2048m

This may sound dumb, but it may be a fresh, or damaged install, so is the JDK installed? If not, go to the download site and download the latest version of Java JRE. Like I said, this may sound dumb, but it solved my problem.
http://www.oracle.com/technetwork/java/javase/downloads/index.html

You should specify where Eclipse should find your JDK in the file eclipse.ini. Specifically, the following parameter (note that it is 2 separate lines in the ini file):
-vm
C:\Java\JDK\1.8\bin\javaw.exe
or wherever your javaw.exe happens to be.
Note: The format of the ini file is very particular; make sure to consult https://wiki.eclipse.org/Eclipse.ini to ensure you get it exactly right

Add the following to the eclipse.ini :
-vm
Java_Home_Variable\bin\javaw.exe
In my Case its
-vm
H:\usr\java\jdk1.6.0_16\bin\javaw.exe

I had the same issue caused by two things:
I had downloaded a 32bit Java version instead of 64bit.
The eclipse.ini did not have path to javaw.exe, so as per prior posts added the statement which points to the location java.
So after I uninstalled the 32 bit Java 1.7, installed the correct one and added the javaw.exe path, eclipse fired up with no more errors

You are most probably missing PATH entries in your windows. Follow this instruction : How do I set or change the PATH system variable?

I just copied the jre folder to whatever path the message tells me it was missing at, and solved it.
(after editing the JAVA_HOME and editing the eclipse.ini didn't worked (as i probably did something wrong)) (i have no other java applications running so it's not affecting me)

If you are using windows 8 or later:
download and install the jdk or jre with all the default settings and options.
Then download and install eclipse.
Everything should work fine. I don't know if it works exactly the same for other OS, but you don't have to set the PATH manually in Windows 8 or later.

Java version used : 1.8
IDE : Eclipse Neon
Adding like the below didn't work for me
-vm
[relative java home]/jdk1.8.0_21/bin/javaw.exe
and then when i removed
javaw.exe
it worked, so it will be like
-vm
[relative java home]/jdk1.8.0_21/bin/

Setting up eclipse on ubuntu

I have a small problem with Eclipse on my Ubuntu machine. I installed JDK, set JAVA_HOME and PATH variables, all seems correct, but eclipse refuses to launch and throws an error:
A Java Runtime 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 locations: /opt/eclipse/jre/bin/java
java in your current PATH
have no clue what's the problem. help please.
note:
I am able to run java and javac in terminal.

If you get this error even though you already have JDK in your system-just follow this steps:
1)open eclipse.ini file with text editor.
2)copy your jdk path by using -vm command (vm and your path should not be in same line)
eg:
-vm
/usr/lib/java/jdk1.7.0_75/jre/bin/java
3)-vm should be placed before -vmargs in eclipse.ini file.
99% works if you follow above simple steps

This worked for me:
ubuntu:~$ sudo apt-get install default-jre

You need to create a link at /usr/bin/java for the java binary (wherever you have placed it).
sudo ln -s /path/to/jre*/bin/java /usr/bin/java

You probably need to set your JAVA_HOME env var something like:
export JAVA_HOME=/apps/java/jdk1.6.0_13
Check this answer out

open your eclipse.ini file
add
-vm
usr/lib/jvm/jdk1.8.x_xx/jre/bin/java
this must be placed before -vmarg
save the file
start your eclipse
Happy Coding...

it seems eclipse looks for java under /usr/bin directory, making a symbolic link of the java command in this dir would solve your problems, at least solve mine

I have to run a number of jre and jdks on my machine and did not want to mess with the environment. I wanted to keep 1.6 for my environment but run eclipse under 1.7. I added the following line to my elcipse.ini file to specify the exact jvm to run eclipse:
-vm
/usr/lib/jvm/jdk1.7_latest/bin/java
Obviously your path might be different. Note that above jdk1.7_latest is a symlink to the specific version of the latest Java 7 jdk.
Hope that helps somebody.

This is the problem of your jdk is not setup properly for current profile.
Before starting eclipse in your current profile. Run "java -version" command on your current profile where you are running eclipse. Surely it will ask to install jdk/jre even jdk already installed but on different profile.
Hence there is two way:
Solution 1. install jdk on current profile edit and add following lines
vi /etc/profile
export JAVA_HOME=/usr/local/jdk-1.8
export PATH=$PATH:$JAVA_HOME/bin
Solution 2: ~/.profiles
export JAVA_HOME=/usr/local/jdk-1.8
export PATH=$PATH:$JAVA_HOME/bin
Solution 3: I tried and working perfectly for me.
1. gedit /home/../eclipse/eclipse.ini
2. Add following line before -vmargs and any plugin or jar execution in eclipse.ini file
-startup
-vm
/usr/local/java/jdk1.8.0_251/bin/java.exe
plugins/org.eclipse.equinox.launcher_1.5.700.v20200207-2156.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.gtk.linux.x86_64_1.1.1100.v20190907-0426
-product
org.eclipse.epp.package.jee.product
-showsplash
org.eclipse.epp.package.common
--launcher.defaultAction
openFile
--launcher.defaultAction
openFile
--launcher.appendVmargs
-vmargs
-Dosgi.requiredJavaVersion=1.8
-Dosgi.instance.area.default=#user.home/eclipse-workspace
-XX:+UseG1GC
-XX:+UseStringDeduplication
--add-modules=ALL-SYSTEM
-Dosgi.requiredJavaVersion=1.8
-Dosgi.dataAreaRequiresExplicitInit=true
-Xms256m
-Xmx2048m
--add-modules=ALL-SYSTEM
This solution is perfectly working after explore from many stackoverflow suggestions and blogs.