m2eclipse: Eclipse is running in a JRE, but a JDK is required

December 9, 2009 | java
author: Karol Zielinski | comments: 41 | views: 15274
Tags: eclipse, java, jdk, jre, m2eclipse, maven

After a while I sat to one of my old projects again… web-based JEE system to manage requirements of the projects, with maven as a system to manage this project’s dependencies. I work on eclipse, so I wanted to install plugin m2eclipse. However at the end of the installation, after restart of eclipse, I have an error: “The Maven Integration requires that Eclipse be running in a JDK, because a number of Maven core plugins are using jars from the JDK. (…)”. How to solve it?

Full error message:

The Maven Integration requires that Eclipse be running in a JDK, because a number of Maven core plugins are using jars from the JDK.

Please make sure the -vm option in eclipse.ini is pointing to a JDK and verify that Installed JRE’s are also using JDK installs.

and the second message:

Eclipse is running in a JRE, but a JDK is required
Some Maven plugins may not work when importing projects or updating source folders.

How to solve it?

First… install JDK if you don’t have it.

And then…

set your JDK as a default Java environment in eclipse (default installed JRE)

Open eclipse. Click on ‘Window’ -> ‘Preferences’ -> ‘Java’ -> ‘Installed JREs’.

If you can’t find any JDK on the list -> click ‘Add’ -> ‘Standard VM’ -> set all paths and click ‘Finish’.

After that – check this JDK on the list of installed JREs and click ‘OK’.

add path to your SDK in eclipse.ini

open ‘eclipse.ini’ and add there:

-vm
path_to_javaw_on_your_machine

so in my example it will be (jdk1.6.0_17 on Windows):

-vm
C:\Progra~1\Java\jdk1.6.0_17\jre\bin\javaw

Notice 1: Do not use paths with spaces! Replace all dir names with spaces to their shortcuts. For example: ‘Program Files’ is ‘Progra~1′.
Notice 2: ‘-vm’ is in the first line, path is in the second line

My full ‘eclipse.ini’ looks like this:

-startup
plugins/org.eclipse.equinox.launcher_1.0.201.R35x_v20090715.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.0.200.v20090519
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256m
-vm
C:\Progra~1\Java\jdk1.6.0_17\jre\bin\javaw
-vmargs
-Xms40m
-Xmx256m

Restart eclipse and everything should be fine.

Really helpful article: old.nabble.com

Post m2eclipse: Eclipse is running in a JRE, but a JDK is required to develway

Comments (41)

m2eclipse: Eclipse is running in a JRE, but a JDK is required
December 9, 2009, 9:05 am

[...] tech.karolzielinski.com Follow us on Twitter 1,510 śledzących RSS Feed 168 czytelników m2eclipse: Eclipse is running in a JRE, but a JDK is required 1 głosuj! Powróciłem ostatnio do jednego ze swoich starych projektów… aplikacji [...]

macetini
January 26, 2010, 2:18 am

Thanks

Karol Zielinski
January 26, 2010, 8:51 am

@macetini
your welcome

Dario
February 9, 2010, 11:15 am

Excelent, I’ve found many sites about this issue, this is the only one who helps me with the right step to do.

cyrus
February 10, 2010, 2:25 am

It worked! I spent a day googleing this issue, and morning this is the first working solution. Many thx!

mike
February 22, 2010, 4:58 pm

Thanks also, you’re tip about how to shorten ‘Program Files’ dir got me going. Now if you could tell me how to get adb server going I’d bow before you.

Rolando
March 22, 2010, 8:10 am

Great! For me works fine!

pidan
March 25, 2010, 7:35 am

Did all this, still getting message =(

David
March 25, 2010, 2:08 pm

Exactly the solution to my problem after installing m2eclipse.

Hector
April 8, 2010, 3:18 pm

Hum… it didn’t work for me.

By the way when the jdk path is betwen “” it doesn’t matter if the path has spaces, the same works for any path in cmd instructions.

Hector
April 8, 2010, 3:35 pm

Ok I found the way…

It seems that sometimes the -vm is the last instruction in the eclipse.ini; however, it has to be moved to before the vmargs.

Then the path has to be as you say, it seems that eclipse.ini does not recognize the quotes

Regards to all, and thanks

bouali
April 12, 2010, 1:27 pm

thank s a lot

Kamala
April 14, 2010, 5:47 am

Finally found a page that explains this problem and the solution step by step. Thank you so much.

sandy
April 14, 2010, 7:10 am

yaah its really works but place -vm before -vmargs thanks a lot

Niranjan Kumar
April 19, 2010, 12:45 am

It works for me also, Just need to place the -vm on the above specified place. Thanks a lots..:)

andre
April 22, 2010, 8:13 pm

Thx!!

hypotechguy
April 26, 2010, 7:58 pm

I found that I also needed to remove the “/javaw” part and just have the path end in “…/bin”. This was with jdk1.6.0_18 on Windows XP SP3. FYI, I am able to run with spaces in the path. Lines 1 and 2 of my eclipse.ini are:

-vm
C:/Program Files/Java/jdk1.6.0_18/bin

Steve Wall
April 29, 2010, 7:11 am

Thx!

Bapi
May 6, 2010, 6:05 pm

The Progra~1 may need to be Progra~2 on a Windows 7 install with a 32-bit JDK

Cambiar la JVM utilizada por Eclipse | José Arrarte | Blog de notas
May 13, 2010, 2:49 pm

[...] http://wiki.eclipse.org/Eclipse.ini http://tech.karolzielinski.com/m2eclipse-eclipse-is-running-in-a-jre-but-a-jdk-is-required [...]

Samuel
May 15, 2010, 3:28 am

I encountered this problem on a linux machine. Please tell me what to do

big_ben3333
May 15, 2010, 5:19 am

Thank a lot

Devilock
May 19, 2010, 10:33 am

Thanx a lot!This was really helpful!!!

Rakesh
June 1, 2010, 2:18 pm

I got the solution of this problem “The Maven Integration requires that Eclipse be running in a JDK, because a number of Maven core plugins are using jars from the JDK.

Please make sure the -vm option in eclipse.ini is pointing to a JDK and verify that Installed JRE’s are also using JDK installs” by setting this value in eclipse.ini

-vm
C:\Program files\Java\jdk1.6.0_20\bin

I kept this above ‘-vmargs’ in this file.

Raunak
June 2, 2010, 10:51 am

Thnx a lot…it helped me…I just added upto /bin part as it was not accepting the file inside the directory.

Don
June 3, 2010, 2:59 am

Encountered the same problem. This somehow worked not for me on a 64 bit XP. Eclipse, even with the parameters at the correct position, did not started at all. With the (x86) path (the 32 bit jdk) it worked in an instant.

Draiwn
June 7, 2010, 4:57 am

I lost 3 hours on a 64 bits xp to get it working properly…

Download the 32bits JDK for windows, and add the following lines (according to your configuration) to your eclipse.ini just above ‘-vmargs’ :

-vm
C:/Progra~2/Java/jdk1.6.0_20/bin

Ballmenace
June 12, 2010, 9:00 am

My solution was to put the javaw.exe path on its own line WITHOUT quotes.
Complete eclipse.ini:

-startup
../../Common/plugins/org.eclipse.equinox.launcher_1.0.201.R35x_v20090715.jar
–launcher.library
../../Common/plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.0.200.v20090519
-showsplash
org.eclipse.platform
–launcher.XXMaxPermSize
256m
-install
C:/Users/andreas/AppData/Local/Genuitec/Profiles/Eclipse 3.5 Classic
-configuration
configuration
-vm
C:\Program Files (x86)\Java\jdk1.6.0_20\bin\javaw.exe
-vmargs
-Xms40m
-Xmx256m