Error: Cannot find Java 1.8 or higher #1787

FillyJ · 2017-09-25T20:28:01Z

EDIT: Since Gephi (0.9.3) Java is embedded into Gephi so there should not be any problem with Java anymore. You don't need to install Java separately.

Installed Gephi - 0.9.2 and the latest version of Java, the Java 8 - update 144. I still can't launch Gephi and it prompts an error message every time I try to do so.

Version used: Gephi 0.9.2
Java version: 8
Operating System: Windows 10 - Home, 1703

Any help?

eduramiba · 2017-09-25T20:31:45Z

I recommend you try the workaround explained at https://stackoverflow.com/questions/29052219/cannot-find-java-please-use-the-jdkhome-switch (gephi.conf instead of netbeans)

schignel · 2017-09-26T08:50:07Z

I'm having the same issue as FillyJ. Here are my system specifications. I

Version used: Gephi 0.9.2
Java version: 8 Update 73
Operating System: Windows 7 - Professional

I attempted to follow the workaround from stackoverflow, but could not locate the netbeans.config file on my system...

Interestingly, I am able to run Gephi 0.9.1, but if I close the program it won't start again (the loading screen appears briefly and then disappears). At that point the only way I can get it to run is to restart the computer. I'm wondering if the issues are somehow both related to Java?

Any thoughts?

eduramiba · 2017-09-26T08:52:21Z

Hi,
You should look for gephi.conf instead of netbeans.conf

eduramiba · 2017-09-26T08:52:48Z

@FillyJ did it work?

FillyJ · 2017-09-26T11:07:06Z

Hey, a classmate recommended that I try Java SE Runtime Environment 8 instead, and that is working for now. I can report back if it stops working again.

schignel · 2017-09-26T11:12:26Z

Thank you @eduramiba! Changing the path in gephi.conf seems to have worked.

eduramiba · 2017-09-26T11:16:08Z

Great!

m2d511 · 2017-09-26T13:11:01Z

Folks and @eduramiba
Could you please tell me how this line of code should look in gephi.conf?
#jdkhome="C:/Program Files (x86)/Java/jre1.8.0_131" nothing seems to work here.

Thanks in advance,

eduramiba · 2017-09-26T13:11:40Z

Remove the '#' since that makes the line a comment.

m2d511 · 2017-09-26T13:13:10Z

same problem

eduramiba · 2017-09-26T13:24:35Z

Does the path actually exist and point to a valid JRE/JDK?

schignel · 2017-09-26T13:27:13Z

If it's helpful, here's what mine looks like:

m2d511 · 2017-09-27T08:53:27Z

..sorry for my late thanks! it worked!

A000045 · 2017-10-22T10:08:33Z

Hi,
Just updated to gephi 0.9.2 => I get the "Cannot find Java 1.8 or higher" message.
I really don't understand the workaround here, could someone help please ?

Running Win 10
I don't really understand the purpose of the JRE or JDK, but apparently I have three different bersions of JRE installations (Java/about/Desktop Settings) :

jre-9.0.1 (amd64)
jre-9 (amd64)
jre1.8.0_144 (x86)

I think I've installed too many programs
(but Gephi was working earlier today anyway, just before the update...)
Also I just tried to install JDK following a tuto but I can't find it anywhere...

Basically, all I wanted was to see if I could visualize some text data and now it seems I won't be able to do it unless I own a PhD in IT... Should I drop it now or is there a chance that I'm able to use gephi without being a pro dev ?

Thanks for attention

eduramiba · 2017-10-22T10:14:46Z

@A000045 if you have 64 bit Windows, just try to install 64 bit Java 8 instead of x86

ghost · 2017-10-27T05:19:35Z

I was able to get it to work. So, I can verify that you have to add the line
jdkhome="C:/Program Files (x86)/Java/jre1.8.0_151"
to the gephi.conf file in C:\Program Files\Gephi-0.9.2\etc

However, I had some trouble with exactly WHERE to put it. As someone very new to this, I'll describe all the steps I went through. Hopefully it will save you some trouble.

First of all, when I open the gephi.conf in Notepad, the whole file is in one long line. Something like this:

#${HOME} will be replaced by user home directory according to platform default_userdir="${HOME}/.${APPNAME}/0.9.2/dev" default_mac_userdir="${HOME}/Library/Application Support/${APPNAME}/0.9.2/dev" # options used by the launcher by default, can be overridden by explicit # command line switches default_options="--branding gephi -J-Xms64m -J-Xmx512m -J-Xverify:none -J-Dsun.java2d.noddraw=true -J-Dsun.awt.noerasebackground=true -J-Dnetbeans.indexing.noFileRefresh=true -J-Dplugin.manager.check.interval=EVERY_DAY" # for development purposes you may wish to append: -J-Dnetbeans.logger.console=true -J-ea # default location of JDK/JRE, can be overridden by using --jdkhome

switch jdkhome="\path\here" # clusters' paths separated by path.separator (semicolon on Windows, colon on Unices) #extra_clusters=

Without the correct format, it's not clear when a comment ends or begins. So I decided to add the reference to java at the beginning. Like this:

jdkhome="C:/Program Files (x86)/Java/jre1.8.0_151" # ${HOME} will be replaced by user home directory according to platform default_userdir="${HOME}/.${APPNAME}/0.9.2/dev" default_mac_userdir="${HOME}/Library/Application Support/${APPNAME}/0.9.2/dev" blahh.....

And then I tried to open gephi again. And I got the message that they could not find the java file in "C:/Program Files (x86)/Java/jre1.8.0_151" # ${HOME}

Which means that somehow this ${HOME} was not commented out correctly.
When I added the correct spacing:

jdkhome="C:/Program Files (x86)/Java/jre1.8.0_151"
#${HOME} will be replaced by user home directory according to platform default_userdir="${HOME}/.${APPNAME}/0.9.2/dev" default_mac_userdir="${HOME}/Library/Application Support/${APPNAME}/0.9.2/dev" blahh.....

Then everything worked perfectly...

pooja7b · 2017-10-29T12:59:34Z

update the path here
#jdkhome="\path\here"
to
jdkhome="C:\Program Files (x86)\Java\jre1.8.0_151"
note that you should remove the '#' symbol.
The above comments were really helpful. I was able to get mine working.

xiangchen-ee · 2017-11-13T09:41:09Z

Hi guys, is there other reason for Gephi to stuck in the "starting modules" step?
I have changed the jdkhome but it doesn't work.

Gephi version: 0.9.2 x64
Java version: jre-8u151-windows-x64
jdkhome="C:\Program Files\Java\jre1.8.0_151"
OS: Windows 7 Professional SP1 x64

wilchivs · 2017-11-13T12:30:10Z

I've just experienced the same problem with Gephi not finding Java 1.8 or higher (although I have no idea what caused this as v0.9.1 was working fine last week and the problem didn't resolve when I updated to 0.9.2).

But I can confirm pooja7b's solution works. I did have to double-check the relevant filename in the Java folder though, so instead of:
jdkhome="C:/Program Files/Java/jre1.8.0_151"
I had to input:
jdkhome="C:/Program Files/Java/jre1.8.0_131"

j00nas · 2017-11-14T08:45:39Z

Hi guys,

i got the same problem, but found another, very simple solution:
I just use "gephi.exe" in my ...\Gephi-0.9.2\bin folder instead of "gephi64.exe".
Maybe it will work for you, too!

eduramiba · 2017-11-14T08:54:18Z

@JonasLohmueller That usually means your OS is 64 bit but your java installation is not.

giugnomt · 2018-09-17T01:42:18Z

Installing Java SE Runtime Environment 8 at http://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133155.html That Java error disappeared! Awesome!

ThatAndresV · 2018-09-26T16:52:30Z

@giugnomt fix worked for me too. Way simpler than noodling with config files.

mattmattingly · 2018-09-26T17:10:26Z

What I found was my laptop had restricted the write to file permissions for Gephi. Once I reloaded my OS from scratch, the permissions cleared up and I could use the program.

…

On Wed, Sep 26, 2018 at 12:52 PM Andres Varela ***@***.***> wrote: @giugnomt <https://github.com/giugnomt> fix worked for me too. Way simpler than noodling with config files. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#1787 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AmCb5o2KkoeiCgibC74nCpsOZSN1qE-Cks5ue7DlgaJpZM4PjStP> .

-- Matt Mattingly

wsamaral · 2018-12-12T14:36:13Z

I had to install the 64bit version to work.

mattmattingly · 2018-12-12T14:47:22Z

I had a lot of issues but all were resolved. Somehow Gephi had gotten write restricted and couldn't write files to my drive, but once I reformatted my drives it resolved itself.

…

On Wed, Dec 12, 2018 at 9:36 AM wsamaral ***@***.***> wrote: I had to install the 64bit version to work. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#1787 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AmCb5viWKR5F-uRISYm4vLP5QE14NQ3wks5u4RRngaJpZM4PjStP> .

-- Matt Mattingly

leolle · 2018-12-26T01:52:35Z

add the following java path in gephi.conf works for me.

jdkhome="C:/Program Files (x86)/Java/jre1.8.0_191"

gephi.conf is located at C:\Program Files\Gephi-0.9.2\etc\gephi.conf

jdkhome="C:/Program Files (x86)/Java/jre1.8.0_191"
# ${HOME} will be replaced by user home directory according to platform
default_userdir="${HOME}/.${APPNAME}/0.9.2/dev"
default_mac_userdir="${HOME}/Library/Application Support/${APPNAME}/0.9.2/dev"

# options used by the launcher by default, can be overridden by explicit
# command line switches
default_options="--branding gephi -J-Xms64m -J-Xmx512m -J-Xverify:none -J-Dsun.java2d.noddraw=true -J-Dsun.awt.noerasebackground=true -J-Dnetbeans.indexing.noFileRefresh=true -J-Dplugin.manager.check.interval=EVERY_DAY"
# for development purposes you may wish to append: -J-Dnetbeans.logger.console=true -J-ea

# default location of JDK/JRE, can be overridden by using --jdkhome <dir> switch
#jdkhome="/path/to/jdk"

# clusters' paths separated by path.separator (semicolon on Windows, colon on Unices)
#extra_clusters=

so-sal · 2019-02-01T05:35:19Z

I modified the file "C:/Program Files/Gephi-0.9.2/etc/gephi.conf"

#jdkhome="/path/to/jdk"
-> jdkhome="C:/Program Files/Java/jdk-11.0.2"

and it works!

Tunacanunal · 2019-02-10T12:09:38Z

Hey, a classmate recommended that I try Java SE Runtime Environment 8 instead, and that is working for now. I can report back if it stops working again.

it is working correctly, thanks for your advice

Fankbai · 2019-06-05T07:57:34Z

go to the folder: ** \Gephi-0.9.2\bin** ,click to the Gephi.exe instead of Gephi64.exe, which works for me.

mdf-github · 2019-08-30T06:37:42Z

Folks and @eduramiba
Could you please tell me how this line of code should look in gephi.conf?
#jdkhome="C:/Program Files (x86)/Java/jre1.8.0_131" nothing seems to work here.

Thanks in advance,

Did this without the "#" comment marker, but replaced the "/" with "\". It worked on Windows 10.

Nico769 · 2019-09-26T13:34:30Z

Folks and @eduramiba
Could you please tell me how this line of code should look in gephi.conf?
#jdkhome="C:/Program Files (x86)/Java/jre1.8.0_131" nothing seems to work here.
Thanks in advance,

Did this without the "#" comment marker, but replaced the "/" with "". It worked on Windows 10.

Works perfectly on Windows 10, thanks.

smwikipedia · 2019-11-14T00:56:08Z

Hi,
You should look for gephi.conf instead of netbeans.conf

This works for me. After I added below line, Gephi can start.

# default location of JDK/JRE, can be overridden by using --jdkhome <dir> switch
jdkhome="C:/Program Files (x86)/Java/jre1.8.0_231"

amcrobert · 2019-11-22T23:45:11Z

Has anyone solved this on a Mac? MacOS Catalina 10.15 specifically... Thanks in advance

AmericoAlves · 2020-01-02T22:09:20Z

This was my solution:

# default location of JDK/JRE, can be overridden by using --jdkhome <dir> switch
jdkhome="C:\Program Files (x86)\Java\jre1.8.0_231"

My Java shortcut was being addressed to a java.exe at
C:\Program Files (x86)\Common Files\Oracle\Java\javapath_target_25227140\

As all of you was ponting to /Program Files (x86)/Java/ ,
i went there and found 3 instalations. I simply pointed gephi.cong to the most recent one.

Thanks and wishes of a glorious and happy new year!

NGOEntrepreneur · 2020-01-03T16:38:04Z

I'm on Windows 10 64 bit and finally had success running Gephi after installing 64 bit Java from https://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133155.html as suggested above. Before this, modifying my .conf did not work.

joshpowlison · 2020-04-22T14:36:24Z

This should be a null issue. 0.9.0 started including the Java environment so separate installation wasn't necessary; 0.9.1 works fine as well without pre-installing Java. The issue started in 0.9.2.

Installing Java is a solution for the current version, but unless the code was purposefully changed to no longer include Java this is an error in the update, not a user error or problem. Just use 0.9.1 if you can and it will work without installing Java separately.

Also, this error is now listed in a few separate different reports; we need to merge these or remove some.

Error #2160
Error #2169
Error #2180

najouamghazli · 2020-05-21T23:46:51Z

I found a pretty useful video to solve this issue:
https://www.youtube.com/watch?v=3r3hU_gfcuA

Hope it helps

heronoh · 2020-07-01T22:06:41Z

solution for Windows

gephi is a 64-bit program, so it needs 64-bit java. The default java installation cofigures the java x86 ( java 32-bit).
In order to install the 64-bit version on must download the windows offline 64-bit installer (today at https://java.com/en/download/manual.jsp) and run it.

after the installation, one will have two javas, one at C:\Program Files (x86)\Java\jre_$version and another at C:\Program Files\Java\jre_$version.

once installed, edit the gehpi.conf file (C:\Program Files\Gephi-0.9.2\etc\gephi.conf) adding the path to java64, (C:\Program Files\Java\jre$version) on the correspondent line (#jdkhome=).

now you can run gephi!

(SOLVED)

Agate13 · 2021-03-11T11:31:11Z

solution for Windows

gephi is a 64-bit program, so it needs 64-bit java. The default java installation cofigures the java x86 ( java 32-bit).
In order to install the 64-bit version on must download the windows offline 64-bit installer (today at https://java.com/en/download/manual.jsp) and run it.

after the installation, one will have two javas, one at C:\Program Files (x86)\Java\jre_$version and another at C:\Program Files\Java\jre_$version.

once installed, edit the gehpi.conf file (C:\Program Files\Gephi-0.9.2\etc\gephi.conf) adding the path to java64, (C:\Program Files\Java\jre$version) on the correspondent line (#jdkhome=).

now you can run gephi!

(SOLVED)

Just downloaded java 64-bit, and installed, and the gephi opened. Didn't need to do anything else. Thanks

mrRobot-95 · 2022-01-09T14:00:12Z

open "C:/Program Files/Gephi-0.9.2/etc/gephi.conf"
Remove # and edit jdkhome="/path/to/jdk" to jdkhome="C:/Program Files (x86)/Java/jre1.8.0_301"

JBaezVal · 2022-02-07T16:41:03Z

this tutorial helped me to solve the problem:

https://www.youtube.com/watch?v=3EQXC--GKVQ

lchen1019 · 2022-04-01T11:00:45Z

Thanks, it really worked after change the location in conf!

mbastian · 2022-04-08T17:56:37Z

Since Gephi (0.9.3) Java is embedded into Gephi so there should not be any problem with Java anymore. You don't need to install Java separately.

junhobaby · 2022-11-14T05:15:39Z

EDIT: Since Gephi (0.9.3) Java is embedded into Gephi so there should not be any problem with Java anymore. You don't need to install Java separately.

Installed Gephi - 0.9.2 and the latest version of Java, the Java 8 - update 144. I still can't launch Gephi and it prompts an error message every time I try to do so.

Version used: Gephi 0.9.2

Java version: 8

Operating System: Windows 10 - Home, 1703

Any help?

You just need to install 64 bit Windows offline from Java official site and that should solve the problem. The default Gephi could be running on a 32 bit which is why it is throwing an error. Works on mine.

eduramiba self-assigned this Sep 25, 2017

eduramiba added the Installation label Sep 25, 2017

eduramiba closed this as completed Sep 26, 2017

This was referenced Sep 28, 2017

Can not load java in gephi 0.9.2 in win 10 #1792

Closed

Cannot install Gephi for Windows #1804

Closed

eduramiba mentioned this issue Oct 25, 2017

Bug w/ Gephi #1828

Closed

This was referenced Oct 31, 2017

I cannot install Gephi!!!! #1833

Closed

Java 1.8 #1835

Closed

eduramiba mentioned this issue Nov 17, 2017

Cannot find Java 1.8 or higher #1849

Closed

eduramiba mentioned this issue Jun 30, 2018

Gephi cannot find Java 1.8 after install. #1987

Closed

eduramiba mentioned this issue Jul 26, 2018

Cannot communicate with Java on my computer #2001

Closed

This was referenced Oct 12, 2018

java 1.8 higher #2036

Closed

Cannot find Java 1.8 #2039

Closed

krisf93 mentioned this issue May 22, 2019

error trying to open gephi #1724

Open

VinceValence mentioned this issue Sep 17, 2019

Problema Gephi Cant find Java 1.8 or higher PUC-Infovis/syllabus-2019#31

Open

Error: Cannot find Java 1.8 or higher #1787

Error: Cannot find Java 1.8 or higher #1787

Comments

FillyJ commented Sep 25, 2017 • edited by mbastian

eduramiba commented Sep 25, 2017

schignel commented Sep 26, 2017 • edited

eduramiba commented Sep 26, 2017

eduramiba commented Sep 26, 2017 • edited

FillyJ commented Sep 26, 2017

schignel commented Sep 26, 2017 • edited

eduramiba commented Sep 26, 2017

m2d511 commented Sep 26, 2017

eduramiba commented Sep 26, 2017

m2d511 commented Sep 26, 2017

eduramiba commented Sep 26, 2017

schignel commented Sep 26, 2017 • edited

m2d511 commented Sep 27, 2017

A000045 commented Oct 22, 2017

eduramiba commented Oct 22, 2017

ghost commented Oct 27, 2017 • edited by ghost

pooja7b commented Oct 29, 2017 • edited

xiangchen-ee commented Nov 13, 2017

wilchivs commented Nov 13, 2017 • edited

j00nas commented Nov 14, 2017 • edited

eduramiba commented Nov 14, 2017

giugnomt commented Sep 17, 2018

ThatAndresV commented Sep 26, 2018

mattmattingly commented Sep 26, 2018 via email

wsamaral commented Dec 12, 2018

mattmattingly commented Dec 12, 2018 via email

leolle commented Dec 26, 2018

so-sal commented Feb 1, 2019

Tunacanunal commented Feb 10, 2019

Fankbai commented Jun 5, 2019

mdf-github commented Aug 30, 2019 • edited

Nico769 commented Sep 26, 2019

smwikipedia commented Nov 14, 2019 • edited

amcrobert commented Nov 22, 2019

AmericoAlves commented Jan 2, 2020

NGOEntrepreneur commented Jan 3, 2020

joshpowlison commented Apr 22, 2020

najouamghazli commented May 21, 2020

heronoh commented Jul 1, 2020

Agate13 commented Mar 11, 2021

mrRobot-95 commented Jan 9, 2022 • edited

JBaezVal commented Feb 7, 2022

lchen1019 commented Apr 1, 2022

mbastian commented Apr 8, 2022

junhobaby commented Nov 14, 2022

FillyJ commented Sep 25, 2017 •

edited by mbastian

schignel commented Sep 26, 2017 •

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eduramiba commented Sep 26, 2017 •

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schignel commented Sep 26, 2017 •

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schignel commented Sep 26, 2017 •

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ghost commented Oct 27, 2017 •

edited by ghost

pooja7b commented Oct 29, 2017 •

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