I programmed my first mod. This si code:

FILE: CZSKtrainmod.class

package XtraEdge.mod.CZSKtrainmod.common;

import XtraEdge.mod.CZSKtrainmod.item.ItemRedLight;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import cpw.mods.fml.common.Mod;
import cpw.mods.fml.common.network.NetworkMod;
import cpw.mods.fml.common.registry.GameRegistry;
import cpw.mods.fml.common.registry.LanguageRegistry;



@Mod(modid = "CZSKtrainmod", name = "CZ/SK Train mod", version = "v0.1 Beta")
@NetworkMod(clientSideRequired=true,serverSideRequired=false)

public class CZSKtrainmod {


public static Item RedLight;
public static Item BlueLight;



public CZSKtrainmod() {
RedLight = new ItemRedLight(1000).setUnlocalizedName("RedLight").setCreativeTab(CreativeTabs.tabTools);
BlueLight = new ItemRedLight(1001).setUnlocalizedName("BlueLight").setCreativeTab(CreativeTabs.tabTools);



LanguageRegistry.addName(RedLight, "Červené svetlo");
LanguageRegistry.addName(BlueLight, "Modré svetlo");



GameRegistry.addRecipe(new ItemStack(RedLight, 2), new Object [] {
	" X ", " X ", " X ", RedLight
});
GameRegistry.addRecipe(new ItemStack(BlueLight, 2), new Object [] {
	" X ", " X ", " X ", BlueLight
});
}
}

FILE ItemRedLight.class

package XtraEdge.mod.CZSKtrainmod.item;

import net.minecraft.client.renderer.texture.IconRegister;
import net.minecraft.item.Item;

public class ItemRedLight extends Item {

public ItemRedLight(int par1) {
	super(par1);
	// TODO Auto-generated constructor stub
}

public void registerIcons(IconRegister iconRegister) {
	this.itemIcon = iconRegister.registerIcon("CZSKtrainmod:Redlight");
}
}

FILE ItemBlueLight.class

package XtraEdge.mod.CZSKtrainmod.item;

import net.minecraft.client.renderer.texture.IconRegister;
import net.minecraft.item.Item;


public class ItemBlueLight extends Item {

public ItemBlueLight(int par1) {
	super(par1);
	// TODO Auto-generated constructor stub

}
public void registerIcons(IconRegister iconRegister) {
	this.itemIcon = iconRegister.registerIcon("CZSKtrainmod:Bluelight");
}
}

But when I run minecraft I´ve this message:

      Minecraft has crashed!     

      ----------------------     

 

Minecraft has stopped running because it encountered a problem; Failed to start game

 

A full error report has been saved to F:\DATA\eclipse\1.5.2\mcp751\jars\.\crash-reports\crash-2013-08-27_16.33.20-client.txt - Please include a copy of that file (Not this screen!) if you report this crash to anyone; without it, they will not be able to help fix the crash

 

 

 

--- BEGIN ERROR REPORT 87131c4e --------

Full report at:

F:\DATA\eclipse\1.5.2\mcp751\jars\.\crash-reports\crash-2013-08-27_16.33.20-client.txt

Please show that file to Mojang, NOT just this screen!

 

Generated 27.8.2013 16:33

 

-- System Details --

Details:

Minecraft Version: 1.5.2

Operating System: Windows 7 (amd64) version 6.1

Java Version: 1.7.0_25, Oracle Corporation

Java VM Version: Java HotSpot 64-Bit Server VM (mixed mode), Oracle Corporation

Memory: 950267928 bytes (906 MB) / 1056309248 bytes (1007 MB) up to 1056309248 bytes (1007 MB)

JVM Flags: 3 total; -Xincgc -Xmx1024M -Xms1024M

AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used

Suspicious classes: FML and Forge are installed

IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0

FML: MCP v7.51 FML v5.2.23.737 Minecraft Forge 7.8.1.737 4 mods loaded, 4 mods active

mcp{7.51} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed

FML{5.2.23.737} [Forge Mod Loader] (coremods) Unloaded->Constructed

Forge{7.8.1.737} [Minecraft Forge] (coremods) Unloaded->Constructed

CZSKtrainmod{v0.1 Beta} [CZ/SK Train mod] (bin) Unloaded->Errored

LWJGL: 2.4.2

OpenGL: GeForce GT 430/PCIe/SSE2 GL version 4.3.0, NVIDIA Corporation

Is Modded: Definitely; Client brand changed to 'fml,forge'

Type: Client (map_client.txt)

Texture Pack: Default

Profiler Position: N/A (disabled)

Vec3 Pool Size: ~~ERROR~~ NullPointerException: null

 

java.lang.ClassCastException: XtraEdge.mod.CZSKtrainmod.item.ItemRedLight cannot be cast to java.lang.Character

at net.minecraft.item.crafting.CraftingManager.addRecipe(CraftingManager.java:186)

at cpw.mods.fml.common.registry.GameRegistry.addShapedRecipe(GameRegistry.java:244)

at cpw.mods.fml.common.registry.GameRegistry.addRecipe(GameRegistry.java:239)

at XtraEdge.mod.CZSKtrainmod.common.CZSKtrainmod.<init>(CZSKtrainmod.java:36)

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)

at java.lang.reflect.Constructor.newInstance(Unknown Source)

at java.lang.Class.newInstance(Unknown Source)

at cpw.mods.fml.common.ILanguageAdapter$JavaAdapter.getNewInstance(ILanguageAdapter.java:168)

at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:466)

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:504)

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)

--- END ERROR REPORT 885d8b42 ----------

 

Can you help me with this please?

GameRegistry.addRecipe(new ItemStack(RedLight, 2), new Object [] {

" X ", " X ", " X ", 'X', RedLight

});

GameRegistry.addRecipe(new ItemStack(BlueLight, 2), new Object [] {

" X ", " X ", " X ", 'X', BlueLight

});

Go learn how add a recipe.

Heres a nice place to learn modding from the start, it's made by the creator of the famous Steve's Carts mod Vswe!

 

courses.vswe.se

Thanks