How can I set VM options in a Java Netbeans Platform Modular Project?

Question

I have a Netbeans Platform modular project, not a regular Java project. I want to set VM options to increase memory, but under the "properties" dialog, there is no way to do this for a modular Netbeans platform project. This has cost me huge amounts of time and I still have not found a good way to set the VM args.

Does anyone know how to set VM args using a Netbeans platform modular project, when compiling and running the program in Netbeans 7? Given the amount of trouble, I am almost ready to give up on Netbeans to create modular applications.

JB- · Accepted Answer · 2011-08-08T19:30:47.043

12

It is quite easy, in fact. Just modify project.properties file to include the following line:

Edited:

run.args.extra=-J-Xmx768m

Of course, you can include any other JVM options there.

Enjoy.

edited Aug 08 '11 at 19:30

answered Jul 11 '11 at 20:33

JB-

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When I try this by adding the run.args.extra option that you specify, I get this error: "Ignored unknown option: -Xmx768m" – Makoto Jul 11 '11 at 23:53
Sorry, missed the -J prefix :( – JB- Jul 12 '11 at 07:04
What if you have more than one argument to pass to jvm? multiple lines or spaces between each entry? – simgineer Jun 23 '14 at 19:50
@J.B - I don't suppose you would know a way to set up environment variables in a "NetBeans Platform" app as well :) – simgineer Jun 23 '14 at 19:51
@simgineer I'm afraid you would need to use os specific launcher scripts to do that. – JB- Jun 30 '14 at 07:17
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...or use `run.jvmargs=` property – Agnius Vasiliauskas Oct 17 '14 at 16:34
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`run.args.extra` only works in development, see http://forums.netbeans.org/topic5312.html – iberck May 09 '16 at 03:05
Yeah it only works in development, when I install my program with installer it uses Xms24m Xmx64m. Anyone knows how to increase in installer or? – digz6666 Sep 28 '16 at 06:14

score 8 · Answer 2 · edited Jan 18 '21 at 08:04

8

I was finally able to solve this based on information at https://web.archive.org/web/20130830023832/http://activeintelligence.org/blog/archive/gephi-increasing-xmx-memory-in-netbeans/

What I did was modify the project.properties file, as JB said, but the correct way to do it was to add a -J before the args. E.g.,

run.args.extra=-J-Xms256m -J-Xmx756m

That did it! Not sure why it took 3 months to figure that out. Definitely a fail for the Netbeans documentation. They should really make this editable from the properties menu instead of making users hunt through nondescript config files!

edited Jan 18 '21 at 08:04

jakubde

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answered Jul 12 '11 at 00:10

Makoto

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Nope, the answer - as far as I can tell - only applies to Ant-based projects in NetBeans IDE. – peterh Nov 26 '13 at 14:39
Sounds like it's unknown as to how we do this in maven? We have an ant project and need to convert it to a maven project. So definitely have to figure out the maven way too. – simgineer Jul 01 '14 at 14:24
@simgineer did you find a way for maven project? – coder247 May 20 '16 at 06:32

score 5 · Answer 3 · answered Jun 22 '12 at 11:24

I thought i'll put some contribution on this topic, When I was developing a netbeans platform application i also faced the same problem, I added run.args.extra=-J-Xmx768m and updated my project.properties file but it didn't ! But when i added run.args.extra=-J-Xmx768m in my platform.properties file then it worked, again this only works when i was in development environment. When I packeged the application for windows the problem remained same my min heap size was 24m and max is 64m. Then I found out that if I update and add default_options="--branding my_project -J-Xms64m -J-Xmx1G" in my_project.conf in my installed directory C:\Program Files\my_project\etc then run my application and checked the ide log i can now see the change. By the way i wasn't lucky enough to see even the run node when i right click and go to the project properties dialogue in netbeans 7.0.1. Its upto netbeans dream team to make us feel lucky.

default_options="--branding my_project -J-Xms64m -J-Xmx1G" in my_project.conf in my installed directory C:\Program Files\my_project\etc then run my application and checked the ide log i cant now see the change.this option is not work for License version of Windows 7.because when i change from "--branding my_project -J-Xms24m -J-Xmx64m" to "--branding my_project -J-Xms64m -J-Xmx1G",it will give warning and not upadated.means i cant change at this path C:\Program Files\my_project\etc .so any other option? — Jay, Jun 30 '12 at 06:14
Any other option for giving more heap memory at making installer of (My App which is done as netbeans platform modulars project) netbeans platform App in netbeans IDE. — Jay, Jun 30 '12 at 06:18

score 3 · Answer 4 · answered Mar 17 '14 at 21:15

I had this issue and after some digging around and reading a lot of docs I was able to deduce that most of those values were coming from templates in the harness.

So if you go to your IDE_home/harness/etc/ you will find the "app.conf" file. This file is renamed during a distro build and the "app.conf" becomes your "application name.conf". Edit this file with the default values you would like in you application.

In my case I replaced the line that read: default_options="--branding ${branding.token} -J-Xms24m -Xmx64m" with default_options="--branding ${branding.token} -J-Xms64m -Xmx512m" as my application was needing more memory. By changing the template I dont have to touch every deployment and change the memory CLI for the VM.

Hope this helps!

Thansk a lot, that what i was looking for for a while – Houssam Badri Dec 22 '15 at 07:51 — Houssam Badri, Dec 22 '15 at 07:51
Thanks a lot, was looking for this! – digz6666 Sep 28 '16 at 07:21 — digz6666, Sep 28 '16 at 07:21

score 2 · Answer 5 · edited May 23 '17 at 11:47

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For maven projects:

As described in this question, you can use etcConfFile parameter of nbm-maven-plugin:

<plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>nbm-maven-plugin</artifactId>
    <configuration>
        <etcConfFile>src/main/resources/app.conf</etcConfFile>
    </configuration>
</plugin>

More info: Geertjan's Blog

edited May 23 '17 at 11:47

Community

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answered Mar 06 '15 at 08:43

lopisan

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Vishrant · Answer 6 · 2017-10-11T21:12:47.117

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If you want to use Netbeans to set the VM options without bothering about which file to edit, here we go:

Run -> Set project configuration -> VM Options

Add your option in the corresponding text box for example: -Xms10m

To answer user1156544 doubt:

edited Oct 11 '17 at 21:12

answered May 10 '17 at 19:36

Vishrant

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I dont see this option, just a selection between default and a release-profile – user1156544 Oct 11 '17 at 11:28

arash · Answer 7 · 2015-11-18T09:23:09.587

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you have to add these lines to your project properties file.

<target name="build-launchers" depends="suite.build-launchers">
<replace file="build/launcher/etc/${app.name}.conf" token="--branding graphsimulator -J-Xms24m -J-Xmx64m" value="--branding graphsimulator -J-Xms128m -J-Xmx512m"/>
</target>

edited Nov 18 '15 at 09:23

answered Nov 18 '15 at 09:17

arash

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Exactly which file? – digz6666 Sep 28 '16 at 07:21
Thanks, I found it, build.xml. – digz6666 Sep 28 '16 at 07:39

How can I set VM options in a Java Netbeans Platform Modular Project?

7 Answers7

For maven projects:

Linked