java fx installation errors | Together Java | Page 1

mint mirage May 13, 2023, 3:18 PM

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blissful pollenBOT May 13, 2023, 3:18 PM

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<@&987246487241105418> please have a look, thanks.

blissful pollenBOT May 13, 2023, 3:18 PM

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blissful pollen <@&987246487241105418> please have a look, thanks.

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mint mirage May 13, 2023, 3:19 PM

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I followed this tutorial: https://www.youtube.com/watch?v=_7OM-cMYWbQ

YouTube

Bro Code

JavaFX install & setup (Eclipse) 🌘

Setting up JavaFX for Eclipse is a pain in the ass

https://openjfx.io/

(00:00:35) Download JavaFX SDK
(00:01:59) Install JavaFX plugin
(00:02:31) Create a new JavaFX project
(00:03:47) Create user library
(00:04:40) Set user library
(00:05:02) Configure build path
(00:05:36) Add VM arguments

Linux/Mac: --module-path /pat...

▶ Play video

hoary edge May 13, 2023, 3:40 PM

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tried having a look in your build path jar's to see that there is no duplicate ?

mint mirage May 13, 2023, 3:47 PM

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hoary edge tried having a look in your build path jar's to see that there is no duplicate ?

I kinda fixed it

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but theres still an issue

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Multiple markers at this line
- The method getStylesheets() from the type Scene refers to the missing type String
- The method getClass() is undefined for the type Main
- The type java.lang.String cannot be resolved. It is indirectly referenced from required type javafx.application.Application

barren hound May 13, 2023, 4:19 PM

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looks like you are missing the stdlib

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make sure its on the modulepath

mint mirage May 13, 2023, 4:26 PM

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barren hound looks like you are missing the stdlib

what is it

barren hound May 13, 2023, 4:28 PM

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stdlib = standard library

mint mirage May 13, 2023, 4:50 PM

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barren hound stdlib = standard library

barren hound May 13, 2023, 4:50 PM

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ah. yeah its unbound

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you need to bind it to your installed jre

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if you press Edit on it, you should be able to bind it

rose estuary May 13, 2023, 5:48 PM

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mint mirage

you shouldn't install it but rather use maven or gradle

mint mirage May 13, 2023, 6:10 PM

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barren hound if you press `Edit` on it, you should be able to bind it

I will try soon

mint mirage May 13, 2023, 6:10 PM

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rose estuary you shouldn't install it but rather use maven or gradle

What's that?

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Im a bit ignorant on the subject

rose estuary May 13, 2023, 6:11 PM

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mint mirage What's that?

build tools/dependency managers
they will automatically download libs or other dependencies, install them, build your program, package it, and run it

mint mirage May 13, 2023, 6:14 PM

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rose estuary build tools/dependency managers they will automatically download libs or other d...

Is there any tutorial for that?

rose estuary May 13, 2023, 6:14 PM

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mint mirage Is there any tutorial for that?

google it I guess
I can help you with maven tho

mint mirage May 13, 2023, 7:36 PM

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barren hound if you press `Edit` on it, you should be able to bind it

it works, but I also get this issue:

Error: Could not find or load main class application.Main
Caused by: java.lang.ClassNotFoundException: application.Main

mint mirage May 13, 2023, 7:39 PM

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rose estuary google it I guess I can help you with maven tho

can u help me with this error?

rose estuary May 13, 2023, 7:47 PM

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mint mirage can u help me with this error?

are you using maven or gradle ?

mint mirage May 13, 2023, 8:50 PM

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rose estuary are you using maven or gradle ?

none of them

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because I already have java fx installed

dapper elbow May 13, 2023, 9:52 PM

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Did you set VM arguments?

mint mirage May 13, 2023, 9:52 PM

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dapper elbow Did you set VM arguments?

the whats?

dapper elbow May 13, 2023, 9:53 PM

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To run a JavaFX application you need to set some VM arguments, to do so you need to paste them into the run configuration (it's called like this in Eclipse, idk which IDE you are using)

mint mirage May 13, 2023, 9:53 PM

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Im using Eclipse

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how do I do that?

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I set java fx as in the module and classpath tho

dapper elbow May 13, 2023, 9:56 PM

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from this open "run configurations"

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Then create one run configuration for your project/edit the one you already have

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and under "VM arguments" write that: --module-path "paste here JavaFX/lib directory" --add-modules javafx.controls

mint mirage May 13, 2023, 10:00 PM

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dapper elbow and under "VM arguments" write that: ```--module-path "paste here JavaFX/lib dir...

ah yes, it doesnt have a module anymore..

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do I have to add one?

dapper elbow May 13, 2023, 10:01 PM

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Did you create a user library?

mint mirage May 13, 2023, 10:04 PM

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yes

dapper elbow May 13, 2023, 10:04 PM

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Ok then add the user library to your project and put these arguments

mint mirage May 13, 2023, 10:05 PM

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I did both, wait

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lemme take a screen

mint mirage May 13, 2023, 10:05 PM

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dapper elbow Ok then add the user library to your project and put these arguments

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dapper elbow May 13, 2023, 10:05 PM

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Remove JavaFX from modulepath

dapper elbow May 13, 2023, 10:06 PM

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mint mirage

You need to set the correct JavaFX directory and select the folder called "lib"

mint mirage May 13, 2023, 10:06 PM

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k, then

mint mirage May 13, 2023, 10:07 PM

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dapper elbow You need to set the correct JavaFX directory and select the folder called "lib"

oh u mean

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the folder

dapper elbow May 13, 2023, 10:07 PM

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Like "C:\something\lib"

mint mirage May 13, 2023, 10:07 PM

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ahh yes

fringe lichen May 13, 2023, 10:07 PM

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example

mint mirage May 13, 2023, 10:08 PM

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Error occurred during initialization of boot layer
java.lang.module.FindException: Error reading module: C:\Users\Andrew\Desktop\programs\javafx-sdk-20.0.1\lib\javafx.base.jar
Caused by: java.lang.module.InvalidModuleDescriptorException: Unsupported major.minor version 61.0

dapper elbow May 13, 2023, 10:09 PM

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Wait are you using JavaFX version 20.0.1 with Java 17?

hoary edge May 13, 2023, 10:09 PM

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need to up your pc's java for that

mint mirage May 13, 2023, 10:09 PM

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dapper elbow Wait are you using JavaFX version 20.0.1 with Java 17?

it says unbound till java 14

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I meant

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all the versions above it are unbound

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so im using java fx 20 with java 14

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is that all right?

hoary edge May 13, 2023, 10:10 PM

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JavaFX 20 is designed to work with JDK 20, but it is known to work with JDK 17 and later versions.

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from their site

mint mirage May 13, 2023, 10:11 PM

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ah

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how do I fix the unbound error then

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hoary edge May 13, 2023, 10:12 PM

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use alterernate and point it towards the correct one

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most likely your installation comes with java till 14 , and the rest is not bound to eclipse

mint mirage May 13, 2023, 10:13 PM

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wym

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do i have to install a newer version of java on eclipse?

hoary edge May 13, 2023, 10:14 PM

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no, point it towards the installed one

dapper elbow May 13, 2023, 10:14 PM

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Just install a newer version of Java and add the buildpath on eclipse

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Then change the compilance level

mint mirage May 13, 2023, 10:16 PM

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now things are getting really weird

hoary edge May 13, 2023, 10:18 PM

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could try adoptium, https://adoptium.net/temurin/releases/?version=20

Latest Releases | Adoptium

Eclipse Adoptium provides prebuilt OpenJDK binaries from a fully open source set of build scripts and infrastructure. Supported platforms include Linux, macOS, Windows, ARM, Solaris, and AIX.

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( its got other versions aswell , its just a quick grab link )

mint mirage May 13, 2023, 10:19 PM

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thks, but regarding eclipse

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im a bit screwed now, I do have java 18

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but

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hoary edge May 13, 2023, 10:19 PM

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expand javaFx

mint mirage May 13, 2023, 10:20 PM

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I gotta put my jre in there

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???

hoary edge May 13, 2023, 10:21 PM

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build path / configure build path , libraries

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add it

dapper elbow May 13, 2023, 10:22 PM

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Under module path do add library -> JRE System Library

mint mirage May 13, 2023, 10:23 PM

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hoary edge May 13, 2023, 10:23 PM

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drop to lib\

mint mirage May 13, 2023, 10:24 PM

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same issue

hoary edge May 13, 2023, 10:24 PM

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one lower then

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also u need a JDK

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u got a JRE

mint mirage May 13, 2023, 10:24 PM

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dapper elbow May 13, 2023, 10:24 PM

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Btw that's java 8

mint mirage May 13, 2023, 10:25 PM

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u sure?

hoary edge May 13, 2023, 10:25 PM

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1.8 is 8

mint mirage May 13, 2023, 10:25 PM

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ah..

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im downloading both jdk and jre

hoary edge May 13, 2023, 10:26 PM

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u need the jdk

dapper elbow May 13, 2023, 10:27 PM

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Wait your goal here is to get a newer version of java

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from java 12 (i think, maybe 11?) there isn't a jre and a jdk, there is only the jdk

mint mirage May 13, 2023, 10:27 PM

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thats why

dapper elbow May 13, 2023, 10:28 PM

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If you have already installed JavaFX 20.0.1 get the same java version

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You can either install it from oracle site or from openjdk (that's better so you don't have licensing problems)

mint mirage May 13, 2023, 10:29 PM

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ok it works but

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Error: Could not find or load main class application.Main
Caused by: java.lang.ClassNotFoundException: application.Main

dapper elbow May 13, 2023, 10:29 PM

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Now you need VM arguments

mint mirage May 13, 2023, 10:29 PM

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of java fx or jdk?

dapper elbow May 13, 2023, 10:30 PM

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--add-modules javafx.controls```

mint mirage May 13, 2023, 10:30 PM

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I used this: --module-path C:\Users\Andrew\Desktop\programs\javafx-sdk-20.0.1\lib --add-modules javafx.controls

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and I still get the same error

dapper elbow May 13, 2023, 10:31 PM

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Send a screenshot

mint mirage May 13, 2023, 10:31 PM

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hoary edge May 13, 2023, 10:32 PM

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and the Main tab ?

mint mirage May 13, 2023, 10:32 PM

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dapper elbow May 13, 2023, 10:34 PM

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What's that warning?

mint mirage May 13, 2023, 10:34 PM

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nothing important, java fx import is never used

hoary edge May 13, 2023, 10:35 PM

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that seems odd

dapper elbow May 13, 2023, 10:36 PM

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Have you launched that project with this run configuration?

mint mirage May 13, 2023, 10:36 PM

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yes

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Error: Could not find or load main class application.Main
Caused by: java.lang.ClassNotFoundException: application.Main

hoary edge May 13, 2023, 10:36 PM

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just to avoid some shenaningans, restart eclipse

mint mirage May 13, 2023, 10:36 PM

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k

hoary edge May 13, 2023, 10:36 PM

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because u are using javaFX things

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did u type the import or did eclipse add it ?

mint mirage May 13, 2023, 10:38 PM

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I installed e(fx)

hoary edge May 13, 2023, 10:38 PM

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not the question, did u type that import or did eclipse add it ?

mint mirage May 13, 2023, 10:38 PM

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I only added import javafx.*;

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the rest was added by eclipse

hoary edge May 13, 2023, 10:39 PM

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so u typed it, then u can erase it

mint mirage May 13, 2023, 10:39 PM

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ye

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still the same error

hoary edge May 13, 2023, 10:40 PM

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there is no enter in the args is there ?

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https://i.imgur.com/INnolzy.png

Imgur

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this is NOT seperated with enter ?

mint mirage May 13, 2023, 10:41 PM

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oh

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ig not

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still the same

dapper elbow May 13, 2023, 10:42 PM

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I don't think that's the case 'cause there aren't spaces in your path, but try to put " before and after JavaFX's path

mint mirage May 13, 2023, 10:44 PM

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same thing

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maybe its not related to VM

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maybe its because java fx isnt in the module path

dapper elbow May 13, 2023, 10:44 PM

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No that's the classic error that you get when you don't put correct VM arguments

hoary edge May 13, 2023, 10:45 PM

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can u paste the entire args in here ?

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just c&p it, no text alterations

mint mirage May 13, 2023, 10:45 PM

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ye

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--module-path "C:\Users\Andrew\Desktop\programs\javafx-sdk-20.0.1\lib"
--add-modules javafx.controls

hoary edge May 13, 2023, 10:46 PM

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from where does the new line come ?

mint mirage May 13, 2023, 10:46 PM

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which one

hoary edge May 13, 2023, 10:46 PM

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https://i.imgur.com/SlFdoE6.png

Imgur

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the one between the lib" and --add

mint mirage May 13, 2023, 10:47 PM

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I think its an enter

hoary edge May 13, 2023, 10:47 PM

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yeah a new line

mint mirage May 13, 2023, 10:47 PM

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yeah

hoary edge May 13, 2023, 10:47 PM

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remove it

mint mirage May 13, 2023, 10:47 PM

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still same issue

hoary edge May 13, 2023, 10:49 PM

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wonder if its problem due to windows cheating on paths

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your fx lib is on your desktop ?

mint mirage May 13, 2023, 10:49 PM

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in a desktop folder

dapper elbow May 13, 2023, 10:51 PM

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If you paste "C:\Users\Andrew\Desktop\programs\javafx-sdk-20.0.1\lib" in your source explorer you get to the correct folder?

mint mirage May 13, 2023, 10:51 PM

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without the "" yes

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"Error: Could not find or load main class application.Main
Caused by: java.lang.ClassNotFoundException: application.Main
"

hoary edge May 13, 2023, 10:59 PM

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just to rule something out, share your code screen

mint mirage May 13, 2023, 10:59 PM

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hoary edge May 13, 2023, 11:00 PM

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try refactoring the class to avoid confusion

mint mirage May 13, 2023, 11:02 PM

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hoary edge try refactoring the class to avoid confusion

the name?

hoary edge May 13, 2023, 11:02 PM

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the class name

mint mirage May 13, 2023, 11:03 PM

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same thing

hoary edge May 13, 2023, 11:04 PM

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can u share an updated shot ?

mint mirage May 13, 2023, 11:05 PM

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ye

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hoary edge May 13, 2023, 11:12 PM

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and src expanded ?

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cause there is no mention of application.Main anywhere

dapper elbow May 13, 2023, 11:18 PM

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In src there is package named "application" i think

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and Main is a class in that package

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Tbh i don't know why it doesn't work, with the correct version of java, the user library and VM arguments it should work

hoary edge May 13, 2023, 11:19 PM

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theres another one that can interfere, if he placed it on the desktop

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onedrive

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@mint mirage what happens when u right click on the class with the main method ( on the left side window ) and run it from the popup ?

mint mirage May 13, 2023, 11:32 PM

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I will tell u tomorrow, gtg now

#java fx installation errors