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My crafting manager "addRecipe" returns a Null Pointer Exception


SteampunkRBot

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I am working on a crafting manager for my mod, but when I try to use my addRecipe I get a null pointer exception.

 

My IBrewingManager

package RV97.Drinks.Utils.Crafting;

import java.util.List;
import net.minecraft.item.ItemStack;
import net.minecraftforge.liquids.LiquidStack;

public abstract interface IBrewingManager
{
public abstract void addRecipe(ItemStack inputItemStack1, LiquidStack outputLiquidStack, int brewingTime);
public abstract void addRecipe(ItemStack inputItemStack1, ItemStack inputItemStack2, LiquidStack outputLiquidStack, int brewingTime);
public abstract void addRecipe(ItemStack inputItemStack1, LiquidStack inputLiquidStack, LiquidStack outputLiquidStack, int brewingTime);
public abstract void addRecipe(ItemStack inputItemStack1, ItemStack inputItemStack2, LiquidStack inputLiquidStack, LiquidStack outputLiquidStack, int brewingTime);

public abstract IBrewingRecipe getRecipe(ItemStack inputStack, ItemStack inputStack2, LiquidStack inputLiquid);

public abstract List getRecipes();
}

 

My CraftingManager

package RV97.Drinks.Utils.Crafting;

public class CraftingManager {
public static IBrewingManager brewery;
}

 

My IBrewingRecipe

package RV97.Drinks.Utils.Crafting;

import net.minecraft.item.ItemStack;
import net.minecraftforge.liquids.LiquidStack;

public abstract interface IBrewingRecipe {

public abstract int getBrewTime();

public abstract ItemStack getInput1();
  
public abstract ItemStack getInput2();
  
public abstract LiquidStack getLiquidInput();

public abstract LiquidStack getLiquidOutput();

}

 

My attempt at addRecipe

CraftingManager.brewery.addRecipe(new ItemStack(Item.sugar), new ItemStack(Item.appleRed), new LiquidStack(Block.waterStill.blockID, 1000), new LiquidStack(applejackDaniels, 1000), 300);

 

And the error I get is as follows:

 

2013-08-18 18:56:08 [sEVERE] [ForgeModLoader] Caught exception from RV97Drinks

java.lang.NullPointerException

at RV97.Drinks.Liquids.registerLiquidRecipes(Liquids.java:33)

at RV97.Drinks.DrinksCore.preInit(DrinksCore.java:44)

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 cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:494)

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.EventHandler.handleEvent(EventHandler.java:74)

at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)

at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)

at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)

at com.google.common.eventbus.EventBus.post(EventBus.java:267)

at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:192)

at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:172)

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.EventHandler.handleEvent(EventHandler.java:74)

at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)

at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)

at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)

at com.google.common.eventbus.EventBus.post(EventBus.java:267)

at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:103)

at cpw.mods.fml.common.Loader.loadMods(Loader.java:515)

at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:163)

at net.minecraft.client.Minecraft.startGame(Minecraft.java:411)

at net.minecraft.client.MinecraftAppletImpl.startGame(MinecraftAppletImpl.java:44)

at net.minecraft.client.Minecraft.run(Minecraft.java:733)

at java.lang.Thread.run(Unknown Source)

2013-08-18 18:56:08 [iNFO] [sTDERR] java.lang.NullPointerException

2013-08-18 18:56:08 [iNFO] [sTDERR] at RV97.Drinks.Liquids.registerLiquidRecipes(Liquids.java:33)

2013-08-18 18:56:08 [iNFO] [sTDERR] at RV97.Drinks.DrinksCore.preInit(DrinksCore.java:44)

2013-08-18 18:56:08 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

2013-08-18 18:56:08 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

2013-08-18 18:56:08 [iNFO] [sTDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

2013-08-18 18:56:08 [iNFO] [sTDERR] at java.lang.reflect.Method.invoke(Unknown Source)

2013-08-18 18:56:08 [iNFO] [sTDERR] at cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:494)

2013-08-18 18:56:08 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

2013-08-18 18:56:08 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

2013-08-18 18:56:08 [iNFO] [sTDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

2013-08-18 18:56:08 [iNFO] [sTDERR] at java.lang.reflect.Method.invoke(Unknown Source)

2013-08-18 18:56:08 [iNFO] [sTDERR] at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)

2013-08-18 18:56:08 [iNFO] [sTDERR] at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)

2013-08-18 18:56:08 [iNFO] [sTDERR] at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)

2013-08-18 18:56:08 [iNFO] [sTDERR] at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)

2013-08-18 18:56:08 [iNFO] [sTDERR] at com.google.common.eventbus.EventBus.post(EventBus.java:267)

2013-08-18 18:56:08 [iNFO] [sTDERR] at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:192)

2013-08-18 18:56:08 [iNFO] [sTDERR] at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:172)

2013-08-18 18:56:08 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

2013-08-18 18:56:08 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

2013-08-18 18:56:08 [iNFO] [sTDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

2013-08-18 18:56:08 [iNFO] [sTDERR] at java.lang.reflect.Method.invoke(Unknown Source)

2013-08-18 18:56:08 [iNFO] [sTDERR] at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)

2013-08-18 18:56:08 [iNFO] [sTDERR] at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)

2013-08-18 18:56:08 [iNFO] [sTDERR] at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)

2013-08-18 18:56:08 [iNFO] [sTDERR] at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)

2013-08-18 18:56:08 [iNFO] [sTDERR] at com.google.common.eventbus.EventBus.post(EventBus.java:267)

2013-08-18 18:56:08 [iNFO] [sTDERR] at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:103)

2013-08-18 18:56:08 [iNFO] [sTDERR] at cpw.mods.fml.common.Loader.loadMods(Loader.java:515)

2013-08-18 18:56:08 [iNFO] [sTDERR] at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:163)

2013-08-18 18:56:08 [iNFO] [sTDERR] at net.minecraft.client.Minecraft.startGame(Minecraft.java:411)

2013-08-18 18:56:08 [iNFO] [sTDERR] at net.minecraft.client.MinecraftAppletImpl.startGame(MinecraftAppletImpl.java:44)

2013-08-18 18:56:08 [iNFO] [sTDERR] at net.minecraft.client.Minecraft.run(Minecraft.java:733)

2013-08-18 18:56:08 [iNFO] [sTDERR] at java.lang.Thread.run(Unknown Source)

 

 

RV97.Drinks.Liquids.registerLiquidRecipes(Liquids.java:33) Refers to where I have the addRecipe I show above, and RV97.Drinks.DrinksCore.preInit(DrinksCore.java:44) refers to when I register that piece of code (I have addRecipe under a function I run during the mod initialisation)

 

Any and all help is appreciated. :)

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Man, the abstract code is useless to us. Your implementation is what is important.

public class CraftingManager {
public static IBrewingManager brewery;
}

This looks a bit...empty, don't you think ?

 

By the way...interfaces are always abstract.

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@Mazetar

Ok, im now getting this:

 

2013-08-18 20:05:52 [iNFO] [sTDOUT] CONFLICT @ 0 item slot already occupied by net.minecraft.item.ItemSpade@7deb98f6 while adding net.minecraft.item.Item@76877f0f

2013-08-18 20:05:52 [iNFO] [fml.ItemTracker] The mod RV97Drinks is overwriting existing item at 256 (net.minecraft.item.ItemSpade from Minecraft) with net.minecraft.item.Item

2013-08-18 20:05:52 [iNFO] [sTDOUT] CONFLICT @ 0 item slot already occupied by net.minecraft.item.Item@76877f0f while adding net.minecraft.item.Item@4aea4e2e

2013-08-18 20:05:52 [iNFO] [fml.ItemTracker] The mod RV97Drinks is overwriting existing item at 256 (net.minecraft.item.Item from RV97Drinks) with net.minecraft.item.Item

 

 

I have no idea why its mentioning the Spade item... Unless I accidentally conflicted with it with one of my items.

 

@GotoLink

I plan to add more types of crafting, so that will be the central crafting class where I, and possibly other mods, may access these crafting managers.

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Here are my BrewingManager and BrewingRecipe classes (Not to be mistaken for IBrewingManager and IBrewingRecipe), which handle adding the recipes etc.

 

BrewingManager:

package RV97.Drinks.Utils.Crafting;

import java.util.ArrayList;
import java.util.List;

import net.minecraft.item.ItemStack;
import net.minecraftforge.liquids.LiquidStack;

public class BrewingManager implements IBrewingManager{

private final List recipes;

public BrewingManager()
{
	this.recipes = new ArrayList();
}

public static IBrewingManager getInstance(){
	return CraftingManager.brewery;
}

public void addRecipe(ItemStack inputItemStack1, LiquidStack outputLiquidStack, int brewingTime) {
	if(inputItemStack1 == null){
		return;
	}
	this.recipes.add(new BrewingRecipe(inputItemStack1, outputLiquidStack, brewingTime));
}


public void addRecipe(ItemStack inputItemStack1, ItemStack inputItemStack2, LiquidStack outputLiquidStack, int brewingTime) {
	if((inputItemStack1 == null) || (inputItemStack2 == null)){
		return;
	}
	this.recipes.add(new BrewingRecipe(inputItemStack1, inputItemStack2, outputLiquidStack, brewingTime));
}


public void addRecipe(ItemStack inputItemStack1, LiquidStack inputLiquidStack, LiquidStack outputLiquidStack, int brewingTime) {
	if((inputItemStack1 == null) || (inputLiquidStack == null)){
		return;
	}
	this.recipes.add(new BrewingRecipe(inputItemStack1, inputLiquidStack, outputLiquidStack, brewingTime));
}


public void addRecipe(ItemStack inputItemStack1, ItemStack inputItemStack2, LiquidStack inputLiquidStack, LiquidStack outputLiquidStack, int brewingTime) {
	if((inputItemStack1 == null) || (inputItemStack2 == null) || (inputLiquidStack == null)){
		return;
	}
	this.recipes.add(new BrewingRecipe(inputItemStack1, inputItemStack2, inputLiquidStack, outputLiquidStack, brewingTime));
}


public IBrewingRecipe getRecipe(ItemStack inputStack) {
	if (inputStack == null){
		return null;
	}
	for (BrewingRecipe r : this.recipes){
		if(inputStack.isItemEqual(r.getInput1())){
			return r;
		}
	}
	return null;
}

public IBrewingRecipe getRecipe(ItemStack inputStack, ItemStack inputStack2) {
	if ((inputStack == null)||(inputStack2 == null)){
		return null;
	}
	for (BrewingRecipe r : this.recipes){
		if((inputStack.isItemEqual(r.getInput1())) && (inputStack2.isItemEqual(r.getInput2()))){
			return r;
		}
	}
	return null;
}

public IBrewingRecipe getRecipe(ItemStack inputStack, LiquidStack inputLiquid) {
	if ((inputStack == null)||(inputLiquid == null)){
		return null;
	}
	for (BrewingRecipe r : this.recipes){
		if((inputStack.isItemEqual(r.getInput1())) && (inputLiquid.isLiquidEqual(r.getLiquidInput()))){
			return r;
		}
	}
	return null;
}

public IBrewingRecipe getRecipe(ItemStack inputStack, ItemStack inputStack2, LiquidStack inputLiquid) {
	if ((inputStack == null)|| (inputStack2 == null) ||(inputLiquid == null)){
		return null;
	}
	for (BrewingRecipe r : this.recipes){
		if((inputStack.isItemEqual(r.getInput1())) && (inputStack2.isItemEqual(r.getInput2())) && (inputLiquid.isLiquidEqual(r.getLiquidInput()))){
			return r;
		}
	}
	return null;
}

public List getRecipes() {
	return this.recipes;
}


}

 

BrewingRecipe:

package RV97.Drinks.Utils.Crafting;

import net.minecraft.item.ItemStack;
import net.minecraftforge.liquids.LiquidStack;

public class BrewingRecipe implements IBrewingRecipe{
private final ItemStack inputStack;
private final ItemStack inputStack2;
private final LiquidStack inputLiquid;
private final LiquidStack resultLiquid;
private final int brewTime;

public BrewingRecipe(ItemStack inputStack, LiquidStack resultLiquid, int brewTime){
	this.inputStack = inputStack;
	this.resultLiquid = resultLiquid;
	this.brewTime = brewTime;
}

public BrewingRecipe(ItemStack inputStack, ItemStack inputStack2, LiquidStack resultLiquid, int brewTime){
	this.inputStack = inputStack;
	this.inputStack2 = inputStack2;
	this.resultLiquid = resultLiquid;
	this.brewTime = brewTime;
}

public BrewingRecipe(ItemStack inputStack, LiquidStack inputLiquid, LiquidStack resultLiquid, int brewTime){
	this.inputStack = inputStack;
	this.inputLiquid = inputLiquid;
	this.resultLiquid = resultLiquid;
	this.brewTime = brewTime;
}

public BrewingRecipe(ItemStack inputStack, ItemStack inputStack2, LiquidStack inputLiquid, LiquidStack resultLiquid, int brewTime){
	this.inputStack = inputStack;
	this.inputStack2 = inputStack2;
	this.inputLiquid = inputLiquid;
	this.resultLiquid = resultLiquid;
	this.brewTime = brewTime;
}

public int getBrewTime() {

	return this.brewTime;
}

public ItemStack getInput1() {

	return this.inputStack.copy();
}

public ItemStack getInput2() {

	if(this.inputStack2 == null){
	return null;
	}
	return this.inputStack2.copy();
}

public LiquidStack getLiquidInput() {

	if(this.inputLiquid == null){
	return null;
	}
	return this.inputLiquid.copy();
}

public LiquidStack getLiquidOutput() {

	return this.resultLiquid.copy();
}
}

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I moved the BrewingRecipe code into my brewing manager, so that should be fine. Still need to solve this crash though... I shall try re-adding all my items, just to check none of them are conflicting with 0. Shall Report back shortly.

 

EDIT: Ok, now the breakline no longer refers to id conflicts of 0 (turns out I forgot to change my config class to use my ID's for 2 items... Silly mistake ¬¬)

 

However, we are back to the original crash of:

 

2013-08-19 16:16:17 [iNFO] [sTDERR] java.lang.NullPointerException

2013-08-19 16:16:17 [iNFO] [sTDERR] at RV97.Drinks.Liquids.registerLiquidRecipes(Liquids.java:33)

2013-08-19 16:16:17 [iNFO] [sTDERR] at RV97.Drinks.DrinksCore.preInit(DrinksCore.java:44)

2013-08-19 16:16:17 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

2013-08-19 16:16:17 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

2013-08-19 16:16:17 [iNFO] [sTDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

2013-08-19 16:16:17 [iNFO] [sTDERR] at java.lang.reflect.Method.invoke(Unknown Source)

2013-08-19 16:16:17 [iNFO] [sTDERR] at cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:494)

2013-08-19 16:16:17 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

2013-08-19 16:16:17 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

2013-08-19 16:16:17 [iNFO] [sTDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

2013-08-19 16:16:17 [iNFO] [sTDERR] at java.lang.reflect.Method.invoke(Unknown Source)

2013-08-19 16:16:17 [iNFO] [sTDERR] at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)

2013-08-19 16:16:17 [iNFO] [sTDERR] at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)

2013-08-19 16:16:17 [iNFO] [sTDERR] at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)

2013-08-19 16:16:17 [iNFO] [sTDERR] at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)

2013-08-19 16:16:17 [iNFO] [sTDERR] at com.google.common.eventbus.EventBus.post(EventBus.java:267)

2013-08-19 16:16:17 [iNFO] [sTDERR] at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:192)

2013-08-19 16:16:17 [iNFO] [sTDERR] at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:172)

2013-08-19 16:16:17 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

2013-08-19 16:16:17 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

2013-08-19 16:16:17 [iNFO] [sTDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

2013-08-19 16:16:17 [iNFO] [sTDERR] at java.lang.reflect.Method.invoke(Unknown Source)

2013-08-19 16:16:17 [iNFO] [sTDERR] at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)

2013-08-19 16:16:17 [iNFO] [sTDERR] at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)

2013-08-19 16:16:17 [iNFO] [sTDERR] at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)

2013-08-19 16:16:17 [iNFO] [sTDERR] at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)

2013-08-19 16:16:17 [iNFO] [sTDERR] at com.google.common.eventbus.EventBus.post(EventBus.java:267)

2013-08-19 16:16:17 [iNFO] [sTDERR] at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:103)

2013-08-19 16:16:17 [iNFO] [sTDERR] at cpw.mods.fml.common.Loader.loadMods(Loader.java:515)

2013-08-19 16:16:17 [iNFO] [sTDERR] at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:163)

2013-08-19 16:16:17 [iNFO] [sTDERR] at net.minecraft.client.Minecraft.startGame(Minecraft.java:411)

2013-08-19 16:16:17 [iNFO] [sTDERR] at net.minecraft.client.MinecraftAppletImpl.startGame(MinecraftAppletImpl.java:44)

2013-08-19 16:16:17 [iNFO] [sTDERR] at net.minecraft.client.Minecraft.run(Minecraft.java:733)

2013-08-19 16:16:17 [iNFO] [sTDERR] at java.lang.Thread.run(Unknown Source)

 

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2013-08-19 16:16:17  [sTDERR] java.lang.NullPointerException

2013-08-19 16:16:17  [sTDERR]    at RV97.Drinks.Liquids.registerLiquidRecipes(Liquids.java:33)

 

can we see those lines ?, actually the whole class and everythign related to it, its a NPE it shouldnt be that hard

how to debug 101:http://www.minecraftforge.net/wiki/Debug_101

-hydroflame, author of the forge revolution-

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@hydroFlame

My Liquids class as requested:

package RV97.Drinks;

import cpw.mods.fml.common.registry.LanguageRegistry;
import RV97.Drinks.Config.ItemInfo;
import RV97.Drinks.Items.Items;
import RV97.Drinks.Utils.Crafting.CraftingManager;
import net.minecraft.block.Block;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraftforge.liquids.LiquidContainerData;
import net.minecraftforge.liquids.LiquidContainerRegistry;
import net.minecraftforge.liquids.LiquidDictionary;
import net.minecraftforge.liquids.LiquidStack;

public class Liquids {
public static Item applejackDaniels;
public static Item goldApplejackDaniels;
public static Item witherWine;
public static Item zambambooze;
public static Item spiderSpirit;

public static void init(){
	applejackDaniels = new Item(ItemInfo.LIQUID_ID).setUnlocalizedName("applejackDaniels");
	LanguageRegistry.addName(applejackDaniels, "Apple JackDaniels");
}

public static void registerLiquids(){
	LiquidDictionary.getOrCreateLiquid("Apple JackDaniels", new LiquidStack(applejackDaniels, 1));
	LiquidContainerRegistry.registerLiquid(new LiquidContainerData(LiquidDictionary.getLiquid("Apple JackDaniels", 1000), new ItemStack(Items.drink,1,1), new ItemStack(Items.mug)));
}

public static void registerLiquidRecipes(){
	CraftingManager.brewery.addRecipe(new ItemStack(Item.sugar), new ItemStack(Item.appleRed), new LiquidStack(Block.waterStill.blockID, 1000), new LiquidStack(Block.lavaStill, 1000), 300);
}
}

 

Line 33 is: CraftingManager.brewery.addRecipe(new ItemStack(Item.sugar), new ItemStack(Item.appleRed), new LiquidStack(Block.waterStill.blockID, 1000), new LiquidStack(Block.lavaStill, 1000), 300);

 

@GotoLink

I moved that code into the BrewingManager code, which is the only class that tries to access those lines, so that should fix it (atleast, for now).

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@hydroflame

I am not sure... Where should it be? (I might have forgotten to create a class or two, as this is my first crafting system.)

 

@GotoLink

I did indeed remove the "final" keyword :)

Nice ;)

 

In your CraftingManager constructor maybe ?  ::)

public class CraftingManager {
public static IBrewingManager brewery;
public CraftingManager(IBrewingManager brewingMnger)
{
this.brewery = brewingMnger;
}
}

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I am not sure... Where should it be? (I might have forgotten to create a class or two, as this is my first crafting system.)

"somewhere" xD

literally, the NullPointerException is due to that

you are trying to call a method on a object that doesnt exists

 

public static IBrewingManager brewery;

this mean "yeah i have a IBreingManager" (but only that i have one, it doesnt say what or who it is)

 

then you go

CraftingManager.brewery.addRecipe(args)

and the JVM goes ragemode yelling

WHO THE F*** ARE YOU TALKING ABOUT, THERE'S NOTHING THERE !!!

 

so probably in your main mod class during preinit or wtv you should make:

CraftingManager.brewery = new BrewingManager();

 

actually it doesnt matter WHERE you place that, as long as its before

 

2013-08-18 18:56:08 [sEVERE] [ForgeModLoader] Caught exception from RV97Drinks

java.lang.NullPointerException

  at RV97.Drinks.Liquids.registerLiquidRecipes(Liquids.java:33)

  at RV97.Drinks.DrinksCore.preInit(DrinksCore.java:44)

line 44 of the method preInit in class DrinksCore. because thats when the code needs it ;)

 

how to debug 101:http://www.minecraftforge.net/wiki/Debug_101

-hydroflame, author of the forge revolution-

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Ok, that solved it! Thanks for the explaination, I have never heard someone explain something like that xD

 

Just to use this thread a little more, I seem to be having trouble with searching through recipes. In my BrewingManager, I try to make a getRecipe function, but on my "for (BrewingRecipe r : this.recipe)" line, eclipse is telling me "Type mismatch: cannot convert from element type Object to BrewingManager.BrewingRecipe" and as I am still kinda nooby (as you may have gathered :P) I cant't figure out a solution... (Basically, just tell me how to solve this :3)

 

Thanks for all the help so far, I really appreciate it! :)

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that actually simple, your for loop should work but your List does not specify a generic type

 

google "java generic types" and you should find a butload of info on that

but basicly you want to make a

 

private List<BrewingRecipe> theList;

instead of a

private List theList;

the first one specify its a list of Brewing recipe while the 2nd will accept anything :\

how to debug 101:http://www.minecraftforge.net/wiki/Debug_101

-hydroflame, author of the forge revolution-

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[MineStrator Daemon]: Finished pulling Docker container image container@pterodactyl~ java -version openjdk version "17.0.10" 2024-01-16 OpenJDK Runtime Environment Temurin-17.0.10+7 (build 17.0.10+7) OpenJDK 64-Bit Server VM Temurin-17.0.10+7 (build 17.0.10+7, mixed mode, sharing) container@pterodactyl~ java -Xms128M -Xmx6302M -Dterminal.jline=false -Dterminal.ansi=true -Djline.terminal=jline.UnsupportedTerminal -p libraries/cpw/mods/bootstraplauncher/1.1.2/bootstraplauncher-1.1.2.jar:libraries/cpw/mods/securejarhandler/2.1.4/securejarhandler-2.1.4.jar:libraries/org/ow2/asm/asm-commons/9.5/asm-commons-9.5.jar:libraries/org/ow2/asm/asm-util/9.5/asm-util-9.5.jar:libraries/org/ow2/asm/asm-analysis/9.5/asm-analysis-9.5.jar:libraries/org/ow2/asm/asm-tree/9.5/asm-tree-9.5.jar:libraries/org/ow2/asm/asm/9.5/asm-9.5.jar:libraries/net/minecraftforge/JarJarFileSystems/0.3.16/JarJarFileSystems-0.3.16.jar --add-modules ALL-MODULE-PATH --add-opens java.base/java.util.jar=cpw.mods.securejarhandler --add-opens java.base/java.lang.invoke=cpw.mods.securejarhandler --add-exports java.base/sun.security.util=cpw.mods.securejarhandler --add-exports jdk.naming.dns/com.sun.jndi.dns=java.naming -Djava.net.preferIPv6Addresses=system -DignoreList=bootstraplauncher-1.1.2.jar,securejarhandler-2.1.4.jar,asm-commons-9.5.jar,asm-util-9.5.jar,asm-analysis-9.5.jar,asm-tree-9.5.jar,asm-9.5.jar,JarJarFileSystems-0.3.16.jar -DlibraryDirectory=libraries -DlegacyClassPath=libraries/cpw/mods/securejarhandler/2.1.4/securejarhandler-2.1.4.jar:libraries/org/ow2/asm/asm/9.5/asm-9.5.jar:libraries/org/ow2/asm/asm-commons/9.5/asm-commons-9.5.jar:libraries/org/ow2/asm/asm-tree/9.5/asm-tree-9.5.jar:libraries/org/ow2/asm/asm-util/9.5/asm-util-9.5.jar:libraries/org/ow2/asm/asm-analysis/9.5/asm-analysis-9.5.jar:libraries/net/minecraftforge/accesstransformers/8.0.4/accesstransformers-8.0.4.jar:libraries/org/antlr/antlr4-runtime/4.9.1/antlr4-runtime-4.9.1.jar:libraries/net/minecraftforge/eventbus/6.0.3/eventbus-6.0.3.jar:libraries/net/minecraftforge/forgespi/6.0.0/forgespi-6.0.0.jar:libraries/net/minecraftforge/coremods/5.0.1/coremods-5.0.1.jar:libraries/cpw/mods/modlauncher/10.0.8/modlauncher-10.0.8.jar:libraries/net/minecraftforge/unsafe/0.2.0/unsafe-0.2.0.jar:libraries/com/electronwill/night-config/core/3.6.4/core-3.6.4.jar:libraries/com/electronwill/night-config/toml/3.6.4/toml-3.6.4.jar:libraries/org/apache/maven/maven-artifact/3.8.5/maven-artifact-3.8.5.jar:libraries/net/jodah/typetools/0.8.3/typetools-0.8.3.jar:libraries/net/minecrell/terminalconsoleappender/1.2.0/terminalconsoleappender-1.2.0.jar:libraries/org/jline/jline-reader/3.12.1/jline-reader-3.12.1.jar:libraries/org/jline/jline-terminal/3.12.1/jline-terminal-3.12.1.jar:libraries/org/spongepowered/mixin/0.8.5/mixin-0.8.5.jar:libraries/org/openjdk/nashorn/nashorn-core/15.3/nashorn-core-15.3.jar:libraries/net/minecraftforge/JarJarSelector/0.3.16/JarJarSelector-0.3.16.jar:libraries/net/minecraftforge/JarJarMetadata/0.3.16/JarJarMetadata-0.3.16.jar:libraries/net/minecraftforge/fmlloader/1.19.2-43.3.0/fmlloader-1.19.2-43.3.0.jar:libraries/net/minecraft/server/1.19.2-20220805.130853/server-1.19.2-20220805.130853-extra.jar:libraries/com/github/oshi/oshi-core/5.8.5/oshi-core-5.8.5.jar:libraries/com/google/code/gson/gson/2.8.9/gson-2.8.9.jar:libraries/com/google/guava/failureaccess/1.0.1/failureaccess-1.0.1.jar:libraries/com/google/guava/guava/31.0.1-jre/guava-31.0.1-jre.jar:libraries/com/mojang/authlib/3.11.49/authlib-3.11.49.jar:libraries/com/mojang/brigadier/1.0.18/brigadier-1.0.18.jar:libraries/com/mojang/datafixerupper/5.0.28/datafixerupper-5.0.28.jar:libraries/com/mojang/javabridge/1.2.24/javabridge-1.2.24.jar:libraries/com/mojang/logging/1.0.0/logging-1.0.0.jar:libraries/commons-io/commons-io/2.11.0/commons-io-2.11.0.jar:libraries/io/netty/netty-buffer/4.1.77.Final/netty-buffer-4.1.77.Final.jar:libraries/io/netty/netty-codec/4.1.77.Final/netty-codec-4.1.77.Final.jar:libraries/io/netty/netty-common/4.1.77.Final/netty-common-4.1.77.Final.jar:libraries/io/netty/netty-handler/4.1.77.Final/netty-handler-4.1.77.Final.jar:libraries/io/netty/netty-resolver/4.1.77.Final/netty-resolver-4.1.77.Final.jar:libraries/io/netty/netty-transport/4.1.77.Final/netty-transport-4.1.77.Final.jar:libraries/io/netty/netty-transport-classes-epoll/4.1.77.Final/netty-transport-classes-epoll-4.1.77.Final.jar:libraries/io/netty/netty-transport-native-epoll/4.1.77.Final/netty-transport-native-epoll-4.1.77.Final-linux-x86_64.jar:libraries/io/netty/netty-transport-native-epoll/4.1.77.Final/netty-transport-native-epoll-4.1.77.Final-linux-aarch_64.jar:libraries/io/netty/netty-transport-native-unix-common/4.1.77.Final/netty-transport-native-unix-common-4.1.77.Final.jar:libraries/it/unimi/dsi/fastutil/8.5.6/fastutil-8.5.6.jar:libraries/net/java/dev/jna/jna/5.10.0/jna-5.10.0.jar:libraries/net/java/dev/jna/jna-platform/5.10.0/jna-platform-5.10.0.jar:libraries/net/sf/jopt-simple/jopt-simple/5.0.4/jopt-simple-5.0.4.jar:libraries/org/apache/commons/commons-lang3/3.12.0/commons-lang3-3.12.0.jar:libraries/org/apache/logging/log4j/log4j-api/2.17.0/log4j-api-2.17.0.jar:libraries/org/apache/logging/log4j/log4j-core/2.17.0/log4j-core-2.17.0.jar:libraries/org/apache/logging/log4j/log4j-slf4j18-impl/2.17.0/log4j-slf4j18-impl-2.17.0.jar:libraries/org/slf4j/slf4j-api/1.8.0-beta4/slf4j-api-1.8.0-beta4.jar cpw.mods.bootstraplauncher.BootstrapLauncher --launchTarget forgeserver --fml.forgeVersion 43.3.0 --fml.mcVersion 1.19.2 --fml.forgeGroup net.minecraftforge --fml.mcpVersion 20220805.130853 [00:02:42] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher running: args [--launchTarget, forgeserver, --fml.forgeVersion, 43.3.0, --fml.mcVersion, 1.19.2, --fml.forgeGroup, net.minecraftforge, --fml.mcpVersion, 20220805.130853] [00:02:42] [main/INFO] [cp.mo.mo.Launcher/MODLAUNCHER]: ModLauncher 10.0.8+10.0.8+main.0ef7e830 starting: java version 17.0.10 by Eclipse Adoptium; OS Linux arch amd64 version 6.1.0-12-amd64 [00:02:43] [main/INFO] [mixin/]: SpongePowered MIXIN Subsystem Version=0.8.5 Source=union:/home/container/libraries/org/spongepowered/mixin/0.8.5/mixin-0.8.5.jar%2363!/ Service=ModLauncher Env=SERVER [00:02:43] [main/WARN] [ne.mi.fm.lo.mo.ModFileParser/LOADING]: Mod file /home/container/libraries/net/minecraftforge/fmlcore/1.19.2-43.3.0/fmlcore-1.19.2-43.3.0.jar is missing mods.toml file [00:02:43] [main/WARN] [ne.mi.fm.lo.mo.ModFileParser/LOADING]: Mod file /home/container/libraries/net/minecraftforge/javafmllanguage/1.19.2-43.3.0/javafmllanguage-1.19.2-43.3.0.jar is missing mods.toml file [00:02:43] [main/WARN] [ne.mi.fm.lo.mo.ModFileParser/LOADING]: Mod file /home/container/libraries/net/minecraftforge/lowcodelanguage/1.19.2-43.3.0/lowcodelanguage-1.19.2-43.3.0.jar is missing mods.toml file [00:02:43] [main/WARN] [ne.mi.fm.lo.mo.ModFileParser/LOADING]: Mod file /home/container/libraries/net/minecraftforge/mclanguage/1.19.2-43.3.0/mclanguage-1.19.2-43.3.0.jar is missing mods.toml file [00:02:44] [main/WARN] [ne.mi.ja.se.JarSelector/]: Attempted to select two dependency jars from JarJar which have the same identification: Mod File: and Mod File: . Using Mod File: [00:02:44] [main/WARN] [ne.mi.ja.se.JarSelector/]: Attempted to select a dependency jar for JarJar which was passed in as source: resourcefullib. Using Mod File: /home/container/mods/resourcefullib-forge-1.19.2-1.1.24.jar [00:02:44] [main/INFO] [ne.mi.fm.lo.mo.JarInJarDependencyLocator/]: Found 13 dependencies adding them to mods collection Latest log [29Mar2024 00:02:42.803] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher running: args [--launchTarget, forgeserver, --fml.forgeVersion, 43.3.0, --fml.mcVersion, 1.19.2, --fml.forgeGroup, net.minecraftforge, --fml.mcpVersion, 20220805.130853] [29Mar2024 00:02:42.805] [main/INFO] [cpw.mods.modlauncher.Launcher/MODLAUNCHER]: ModLauncher 10.0.8+10.0.8+main.0ef7e830 starting: java version 17.0.10 by Eclipse Adoptium; OS Linux arch amd64 version 6.1.0-12-amd64 [29Mar2024 00:02:43.548] [main/INFO] [mixin/]: SpongePowered MIXIN Subsystem Version=0.8.5 Source=union:/home/container/libraries/org/spongepowered/mixin/0.8.5/mixin-0.8.5.jar%2363!/ Service=ModLauncher Env=SERVER [29Mar2024 00:02:43.876] [main/WARN] [net.minecraftforge.fml.loading.moddiscovery.ModFileParser/LOADING]: Mod file /home/container/libraries/net/minecraftforge/fmlcore/1.19.2-43.3.0/fmlcore-1.19.2-43.3.0.jar is missing mods.toml file [29Mar2024 00:02:43.877] [main/WARN] [net.minecraftforge.fml.loading.moddiscovery.ModFileParser/LOADING]: Mod file /home/container/libraries/net/minecraftforge/javafmllanguage/1.19.2-43.3.0/javafmllanguage-1.19.2-43.3.0.jar is missing mods.toml file [29Mar2024 00:02:43.877] [main/WARN] [net.minecraftforge.fml.loading.moddiscovery.ModFileParser/LOADING]: Mod file /home/container/libraries/net/minecraftforge/lowcodelanguage/1.19.2-43.3.0/lowcodelanguage-1.19.2-43.3.0.jar is missing mods.toml file [29Mar2024 00:02:43.878] [main/WARN] [net.minecraftforge.fml.loading.moddiscovery.ModFileParser/LOADING]: Mod file /home/container/libraries/net/minecraftforge/mclanguage/1.19.2-43.3.0/mclanguage-1.19.2-43.3.0.jar is missing mods.toml file [29Mar2024 00:02:44.033] [main/WARN] [net.minecraftforge.jarjar.selection.JarSelector/]: Attempted to select two dependency jars from JarJar which have the same identification: Mod File: and Mod File: . Using Mod File: [29Mar2024 00:02:44.034] [main/WARN] [net.minecraftforge.jarjar.selection.JarSelector/]: Attempted to select a dependency jar for JarJar which was passed in as source: resourcefullib. Using Mod File: /home/container/mods/resourcefullib-forge-1.19.2-1.1.24.jar [29Mar2024 00:02:44.034] [main/INFO] [net.minecraftforge.fml.loading.moddiscovery.JarInJarDependencyLocator/]: Found 13 dependencies adding them to mods collection
    • I am unable to do that. Brigadier is a mojang library that parses commands.
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