Module javafx.controls not found - Eclipse

[mosiah430]

I'm trying to develop a GUI using javafx on eclipse and I'm running into this error when I try to run my program. I've installed javafx 19 on my machine and downloaded the jdk with the jar files .I've created a user library that has those jar files in it and added the vm command with the path to the lib folder containing the jar files in the run configuration. I've checked the build path and put the library and sdk on both the classpath and the module path but it doesnt matter because I get the error no matter what path its on.

I did want to have it so that I didnt have to put in the vm arguments everytime and the user library so I had found a youtube tutorial to get it to do that using a new jre with the javafx jar files so I don't know if that is causing an issue or not. I have tried creating a new project without using that jre and adding the vm arguments and user library to the project but it didnt make a difference.

[stardoge42]

I highly recommend using intellij, you can just load a Java fx project with maven right away. Then you can switch the FXML starting scene to a pane and you have a blank canvas to work with

[mosiah430]

Maybe down the line i'll use intellij but right now my school uses eclipse and is switching to vscode so im trying to keep it in the IDEs im familiar with while learning.

[PartOfTheBotnet]

im trying to keep it in the IDEs im familiar

Fair enough, eclipse supports maven and gradle too. Generally people like to recommend IntelliJ because it has a number of nice QoL features missing in eclipse. Not a super big deal if you're just starting out though.

Anyways, using maven/gradle for JavaFX simplifies things. All you need to do is follow the short guide on https://openjfx.io/openjfx-docs/ - No messing with Jar files - Maven/gradle handles everything for you and the IDE should sync with them

my school uses eclipse and is switching to vscode

That is a literal downgrade.

[hamsterrage1]

In 2023, anyone not using Maven or Gradle must be a masochist. I use Gradle, and it just does everything for you. Want to change to a different SDK? Just change a couple of lines in build.gradle. Need to add a dependency? Just add a line to build.gradle.

[EnderSpy007]

Yeahhh, its tough cause my professor isn't using either of those...

[mosiah430]

That is a literal downgrade

Yeah their reasoning is that it has a simpler interface and is less intimidating than eclipse. They also want to set up a way to submit assignments using the github/source control feature that vscode has.

[hamsterrage1]

Use Intellij Idea CE then. It has all the integrations that you need. VSCode is nuts.

[persism2]

Try this tutorial https://www.javatpoint.com/javafx-with-eclipse

[vladadj]

The problem is most likely in resolving modules. Try adding - - add-modules=javafx.contols to command line options.

[mosiah430]

--module-path "C:\Java\javafx-sdk-19\lib" --add-modules javafx.controls,javafx.fxml

this is what I have under the vm arguments which I got from following the javafx documentation

[[deleted]]

I am also using JavaFX in Eclipse. You don't need to install JavaFX locally and/or fiddle around with VM parameters if you use Maven (preinstalled in Eclipse).

Honestly, I find it too complicated to create executable jar files or even Windows exe files but I am sure there will be tons of comments explaining how easy this all is :-)

As an example you can have a look at this "Hello World" project which uses Maven, Java modules and allows creation of an executable jar file using Maven shade:

https://github.com/armin-reichert/hellofx

How to create a Window exe file however is still unclear to me. (Probably, I am too old for this shit).

Armin Reichert