FXML Loader not working when Eclipse project is compiled

[wise garden]

I am making a project in Eclipse using Maven and JavaFX and I am trying to load an FXML file as a scene using:

FXMLLoader menuLoader = new FXMLLoader(getClass().getResource(fxmlPath));

My fxmlPath is a valid path to a fxml file in my resources folder which is under the main folder under the src folder. When running this in eclipse it works however when I compile the project to an executable .jar file and try running it I get an error:

WARNING: Unsupported JavaFX configuration: classes were loaded from 'unnamed module @14462937'
/fxml/scenes/menu.fxml
null
java.lang.IllegalStateException: Location is not set.
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2561)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2536)
at application.Main.loadScene(Main.java:148)
at application.Main.start(Main.java:189)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:839)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:483)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:456)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:400)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:455)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:184)
at java.base/java.lang.Thread.run(Thread.java:1570)

The location is not set error happens when you try and load an fxml file which doesn't exist and through using System.out.println() I found that getClass().getResource(fxmlPath) is null when the executable jar is run, even though the fxml file exists within the project.

Let me know if anyone has any ideas.

[tepid badger]

<@&987246527741304832> please have a look, thanks.

[hoary sail]

show the path please

[wise garden]

/fxml/scenes/menu.fxml

[hoary sail]

can you check that /fxml/scenes/menu.fxml exists in the jar ?

[wise garden]

I tried extracting it

and I got lots of jar files and folders all over my desktop

but a resource folder was there

[hoary sail]

you don't need to extract it, just look inside with an app that works with zip files

[hoary sail]

there shouldn't be a resources folder

[wise garden]

and the items in it had the same structure as in the project

[hoary sail]

so you must have seen it wrong

[wise garden]

what app works

[hoary sail]

that's not normal

[hoary sail]

any app that can unzip
7zip, winrar, etc

if you rename it to .zip, windows explorer itself can also do that

[wise garden]

I'm in

[hoary sail]

show a screenshot please

[hoary sail]

that's not normal

[wise garden]

It is compiled as an executable jar

as opposed to a normal one

[hoary sail]

no

it shouldn't have a resources folder

show your pom

[hoary sail]

There is nothing else ?

[wise garden]

nah

there's dependencies

and plugins

I'll get screenshot of plugins

[tepid badger]

I uploaded your attachments as Gist.

[hoary sail]

How do you create a jar ?

[wise garden]

I use eclipses export feature

[hoary sail]

Ah dont, use maven

[wise garden]

you mean from the command lin

[hoary sail]

yes

well

or from run configuration

from eclipse

[wise garden]

how do I do it from run configuration

[hoary sail]

create run configuation

maven configuration

then select a maven command

[wise garden]

where is create run configuration

[hoary sail]

small arrow at the right of the run button

[wise garden]

do I click run configurations

or run as then maven build

[hoary sail]

this

[wise garden]

I did

I can't see maven configurations though

[hoary sail]

wdym

[hoary sail]

at the right, maven build

[wise garden]

;eft you mean

[hoary sail]

ah yes

left

[wise garden]

So I clicked the configurations for my project but I don't know where you enter maven commands

[hoary sail]

show a screenshot

[hoary sail]

yes, enter a goal

for example clean package

or javafx:run

[wise garden]

I did javafx:run

how do I compile it now

do you want me to not use export

[hoary sail]

Yes, use maven, not eclipse

[hoary sail]

clean package

[wise garden]

It now says unable to access the file when I try to run it frm the terminal

[hoary sail]

why do you not run it from eclipse run configuration ?

[wise garden]

I want it to be compild though

[hoary sail]

yes ?

[wise garden]

I want a compiled jar which can be used without eclipse

[hoary sail]

and ?

yes ?

[wise garden]

how do I get the jar form run configurations

I can run the program

[hoary sail]

.

[wise garden]

I'll try entering clean package instead of javafx:run

it compiled

and I ran the compiled executable jar

but it had an error about manifest files

no main manifest attribute,

[hoary sail]

then you didn't configure the jar plugin correctly

[wise garden]

how do I configure it

[hoary sail]

try do add <mainClass>application.Main</mainClass>

[wise garden]

in the pom.xml

[hoary sail]

in the jar plugin

well

I rather advise you to use another plugin

like

[tepid badger]

To run a maven project, you first need to add this following plugin:

<plugin>
  <groupId>org.codehaus.mojo</groupId>
  <artifactId>exec-maven-plugin</artifactId>
  <version>3.1.0</version>
  <goals>
    <goal>java</goal>
  </goals>
  <configuration>
    <mainClass>your.MainClass</mainClass>
  </configuration>
</plugin>

Don't forget to replace the class name by the correct one.
Then run mvn exec:java

Maven automatically creates a shallow jar (without any lib) and without a manifest by default, in target.
To create a runnable fat jar, you can use this following plugin:

<plugin>
  <artifactId>maven-assembly-plugin</artifactId>
  <version>3.5.0</version>
  <configuration>
    <descriptorRefs>
      <descriptorRef>jar-with-dependencies</descriptorRef>
    </descriptorRefs>
    <archive>
      <manifest>
        <mainClass>your.MainClass</mainClass>
      </manifest>
    </archive>
  </configuration>
  <executions>
    <execution>
      <id>make-assembly</id>
      <phase>package</phase>
      <goals>
        <goal>single</goal>
      </goals>
    </execution>
  </executions>
</plugin>

Don't forget to replace the class name by the correct one.
Then run mvn package to build it, then go in target, and run java -jar MyJar-jar-with-dependencies.jar and don't forget to replace MyJar by the jar name. Don't mix with the other jar which is the shallow jar without manifest.

alathreon • used /tag id: maven-run · Aug 17, 2024, 10:58 PM

[wise garden]

yeah I'm not really familiar with compiling things in java

I'll try adding <mainClass>application.Main</mainClass>

I got the same error

I might go now and try to solve this later

but thanks for your help so far