So I was trying to create some "Core" mod, it is not a real core mod, to make changes of vanilla classes or so, but I was tired of creating the same classes and methods in every mod again, so I decided to create my own core mod, but my problem now is, that that my mod crashes when I'm trying to do something with it, for example:

 

BasicGun = new BasicGun();

public class BasicGun extends BasicItem{

public BasicGun() {
	super("BasicGun", 1, CreativeTabs.tabCombat, AdvancedGuns.MODID);
}

//this is the class from the core
´public class BasicItem extends Item{

protected String name;

public BasicItem(String name, int maxStackSize, CreativeTabs tab, String modid){
	this.name = name;
	setCreativeTab(tab);
	setMaxStackSize(maxStackSize);
	setUnlocalizedName(modid + "_" + name);
	Side side = FMLCommonHandler.instance().getEffectiveSide();
	GameRegistry.registerItem(this, name, modid);
	if(side == Side.CLIENT){
		Minecraft.getMinecraft().getRenderItem().getItemModelMesher().register(this, 0, new ModelResourceLocation(modid + ":" + name, "inventory"));
	}
}

public String getName(){
	return name;
}
}

And then it crahses

 

 

 

net.minecraftforge.fml.common.LoaderException: java.lang.NoSuchFieldError: field_78037_j

at net.minecraftforge.fml.common.LoadController.transition(LoadController.java:163)

at net.minecraftforge.fml.common.Loader.initializeMods(Loader.java:733)

at net.minecraftforge.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:315)

at net.minecraft.client.Minecraft.startGame(Minecraft.java:528)

at net.minecraft.client.Minecraft.run(Minecraft.java:356)

at net.minecraft.client.main.Main.main(Main.java:117)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)

at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

at net.minecraftforge.gradle.GradleStartCommon.launch(Unknown Source)

at GradleStart.main(Unknown Source)

Caused by: java.lang.NoSuchFieldError: field_78037_j

at de.intektor.klooncore.KloonCore.init(KloonCore.java:22)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:537)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)

at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)

at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)

at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)

at com.google.common.eventbus.EventBus.post(EventBus.java:275)

at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:212)

at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:190)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)

at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)

at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)

at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)

at com.google.common.eventbus.EventBus.post(EventBus.java:275)

at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:119)

at net.minecraftforge.fml.common.Loader.initializeMods(Loader.java:731)

... 12 more

 

 

 

 

I added my mod only in the main folder of forge and added it then to the build path

Well, I'm sorry but I never used the cmd, so I have no idea how to do it, I put the jar in my forge folder, and then I tried this: gradlew deobfJar klooncore-1.0.jar

gradlew deobfJar klooncore-1.0

gradlew deobfJar -jar klooncore-1.0.jar

gradlew deobfJar -jar klooncore-1.0

 

nothing worked

 

it didn't find it