Problem with JavaFX 1.8

[Elias5656]

[Sorry for my bad English, Im from Germany so my english isnt that good:)]

 

Hey,
I'm new to this Forum and also to Forge, so I hope you can help me with my problem.
I want to have a JavaFX GUI with Fxml in my Mod. I already made the GUI with JavaFX and Fxml so that I just have to copy the classes in my mod. After adding everything and starting an Instance of my GUI when picking up an Item, the game doesn't Crash but the Console get spammed with:

Caused by: java.lang.ClassNotFoundException: javafx.scene.Parent
	at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:101) ~[launchwrapper-1.12.jar:?]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_121]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_121]
	at com.Elias.Eliasmod.EliasEventHandler.pickupItem(EliasEventHandler.java:13) ~[EliasEventHandler.class:?]
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_6_EliasEventHandler_pickupItem_EntityItemPickupEvent.invoke(.dynamic) ~[?:?]
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:55) ~[ASMEventHandler.class:?]
	at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:140) ~[EventBus.class:?]
	at net.minecraftforge.event.ForgeEventFactory.onItemPickup(ForgeEventFactory.java:352) ~[ForgeEventFactory.class:?]
	at net.minecraft.entity.item.EntityItem.onCollideWithPlayer(EntityItem.java:389) ~[EntityItem.class:?]
	at net.minecraft.entity.player.EntityPlayer.collideWithPlayer(EntityPlayer.java:691) ~[EntityPlayer.class:?]
	at net.minecraft.entity.player.EntityPlayer.onLivingUpdate(EntityPlayer.java:683) ~[EntityPlayer.class:?]
	at net.minecraft.entity.EntityLivingBase.onUpdate(EntityLivingBase.java:1828) ~[EntityLivingBase.class:?]
	at net.minecraft.entity.player.EntityPlayer.onUpdate(EntityPlayer.java:334) ~[EntityPlayer.class:?]
	at net.minecraft.entity.player.EntityPlayerMP.onUpdateEntity(EntityPlayerMP.java:374) ~[EntityPlayerMP.class:?]
	at net.minecraft.network.NetHandlerPlayServer.processPlayer(NetHandlerPlayServer.java:347) ~[NetHandlerPlayServer.class:?]
	at net.minecraft.network.play.client.C03PacketPlayer.processPacket(C03PacketPlayer.java:36) ~[C03PacketPlayer.class:?]
	at net.minecraft.network.play.client.C03PacketPlayer.processPacket(C03PacketPlayer.java:105) ~[C03PacketPlayer.class:?]
	at net.minecraft.network.PacketThreadUtil$1.run(PacketThreadUtil.java:24) ~[PacketThreadUtil$1.class:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_121]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_121]
	at net.minecraftforge.fml.common.FMLCommonHandler.callFuture(FMLCommonHandler.java:714) ~[FMLCommonHandler.class:?]
	... 5 more

I don't really know why its saying he can't find javafx. scene. Parent because I can include it without any errors, I also can't find something helpful on the Internet. So when someone already created an external Java GUI in a Minecraft mod it would be great when you tell me how.

Edited May 30, 2017 by Elias5656

[Alexiy]

I also tried using JavaFx, but it seems that it is not being loaded / is excluded from the libraries shipped with the game. You will have to design you gui elements yourself.