Error: JavaFX runtime components are missing, and are required to run this application in eclipse

Question

I am a beginner in JavaFX and trying to run JavaFX in Eclipse on Ubuntu.

I have openjfx installed on my pc, but it is giving the error

JavaFX runtime components are missing, and are required to run this application.

I have searched a lot but not got any solution.

You are using Java 10 which still contains JavaFX, what is under "jfxrt"? Is your project a module? What is the build configuration? — user1803551, Sep 01 '18 at 23:11
what happens when you add jfxrt.jar to your project's classpath (right click on project > build path > configure build path > java build path > libraries > add external jar > jfxrt.jar) — guleryuz, Sep 02 '18 at 09:46
Nothing happens ,when i run the projects error shows in console — siddhartha kumar verma, Sep 02 '18 at 09:53
ok, what happens when you add `--add-modules=ALL-SYSTEM` in your `eclipse.ini` as described [here](https://wiki.eclipse.org/Configure_Eclipse_for_Java_9), don't forget to restart your eclipse after change to `eclipse.ini` — guleryuz, Sep 02 '18 at 10:29
It is showing Project 'HelloWorld' is missing required library: '/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/jfxrt.jar' — siddhartha kumar verma, Sep 02 '18 at 11:13
Ok, can you please remove jxfrt.jar from build path which you added in the previous step and retry — guleryuz, Sep 02 '18 at 14:41
@guleryuz for now i have installed netbeans but i will do it later thank you for your help!! — siddhartha kumar verma, Sep 03 '18 at 05:42
Try this (I got the same error, this worked for me): Right click on the Java file -> Run As -> Run Configurations -> Click on 'Arguments' Tab -> VM argumments: -> Provide this value `--module-path //javafx-sdk-11/lib/ --add-modules=javafx.controls` — Venkata Raju, Oct 02 '18 at 09:11

score 5 · Answer 1 · edited Dec 28 '19 at 13:46

5

Try simply creating a launcher.
For your App, it should look something like this:

package application;

import javafx.application.Application;

public class MainLaunch {

    public static void main(final String[] args) {
        Application.launch(Main.class, args);
    }
}

(you can leave the old main Method unused in your App for the time-being)
This worked for me with JDK 13 & JavaFX 13 & Eclipse 2019-12 under Ubuntu.
(I created the Project using "new/Maven Project/Simple Project" and then just added JavaFX, Logging & other stuff as dependencies in pom.xml, which all landed on the Classpath. Only the JDK was on the Modulepath)
No need to bother about Java Modules.

If that works, you can take time to learn about Java Modularisation another day...

edited Dec 28 '19 at 13:46

Patrick Mevzek

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answered Dec 28 '19 at 13:25

Dave The Dane

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Great answer, but why do I have to do this? – Ben the Coder May 24 '23 at 20:47
1

Unfortunately I'm one of those (the many) who's deferred learning about Java Modularisation until another day! But I did find the following.: https://edencoding.com/runtime-components-error/ – Dave The Dane May 26 '23 at 06:47

score 0 · Answer 2 · answered Aug 25 '20 at 13:37

The suggestion from Venkata Raju brought me already half the way with Eclipse (2019-03 with Java 11):

VM argumments: -> Provide this value --module-path /<path>/javafx-sdk-11/lib/ --add-modules=javafx.controls

In addition, I made sure to uncheck "Use the -XstartOnFirstThread argument when launching with SWT" option in the same panel of the launch configuration.

Error: JavaFX runtime components are missing, and are required to run this application in eclipse

2 Answers2

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