So I am trying to update my mod to 1.8 and I am stuck on getting my crop to work. Every time I try to right click on farmland/any other block with my custom seeds, it crashes my game.

 

This is the crash report:

 

 

[16:21:16] [server thread/FATAL] [FML]: Exception caught executing FutureTask: java.util.concurrent.ExecutionException: java.lang.NullPointerException

java.util.concurrent.ExecutionException: java.lang.NullPointerException

  at java.util.concurrent.FutureTask.report(Unknown Source) ~[?:1.7.0_72]

  at java.util.concurrent.FutureTask.get(Unknown Source) ~[?:1.7.0_72]

  at net.minecraftforge.fml.common.FMLCommonHandler.callFuture(FMLCommonHandler.java:715) [FMLCommonHandler.class:?]

  at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:726) [MinecraftServer.class:?]

  at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:669) [MinecraftServer.class:?]

  at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:171) [integratedServer.class:?]

  at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:540) [MinecraftServer.class:?]

  at java.lang.Thread.run(Unknown Source) [?:1.7.0_72]

Caused by: java.lang.NullPointerException

  at net.minecraft.item.ItemSeeds.getPlant(ItemSeeds.java:61) ~[itemSeeds.class:?]

  at net.minecraft.block.Block.canSustainPlant(Block.java:1905) ~[block.class:?]

  at net.minecraft.item.ItemSeeds.onItemUse(ItemSeeds.java:40) ~[itemSeeds.class:?]

  at net.minecraftforge.common.ForgeHooks.onPlaceItemIntoWorld(ForgeHooks.java:570) ~[ForgeHooks.class:?]

  at net.minecraft.item.ItemStack.onItemUse(ItemStack.java:146) ~[itemStack.class:?]

  at net.minecraft.server.management.ItemInWorldManager.activateBlockOrUseItem(ItemInWorldManager.java:488) ~[itemInWorldManager.class:?]

  at net.minecraft.network.NetHandlerPlayServer.processPlayerBlockPlacement(NetHandlerPlayServer.java:624) ~[NetHandlerPlayServer.class:?]

  at net.minecraft.network.play.client.C08PacketPlayerBlockPlacement.processPacket(C08PacketPlayerBlockPlacement.java:67) ~[C08PacketPlayerBlockPlacement.class:?]

  at net.minecraft.network.play.client.C08PacketPlayerBlockPlacement.processPacket(C08PacketPlayerBlockPlacement.java:114) ~[C08PacketPlayerBlockPlacement.class:?]

  at net.minecraft.network.PacketThreadUtil$1.run(PacketThreadUtil.java:24) ~[PacketThreadUtil$1.class:?]

  at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:1.7.0_72]

  at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.7.0_72]

  at net.minecraftforge.fml.common.FMLCommonHandler.callFuture(FMLCommonHandler.java:714) ~[FMLCommonHandler.class:?]

  ... 5 more

[16:21:17] [server thread/INFO]: Stopping server

[16:21:17] [server thread/INFO]: Saving players

[16:21:17] [server thread/INFO]: Saving worlds

[16:21:17] [server thread/INFO]: Saving chunks for level '1.8 Forge'/Overworld

[16:21:17] [server thread/INFO]: Saving chunks for level '1.8 Forge'/Nether

[16:21:17] [server thread/INFO]: Saving chunks for level '1.8 Forge'/The End

[16:21:18] [server thread/INFO] [FML]: Unloading dimension 0

[16:21:18] [server thread/INFO] [FML]: Unloading dimension -1

[16:21:18] [server thread/INFO] [FML]: Unloading dimension 1

[16:21:18] [server thread/INFO] [FML]: Applying holder lookups

[16:21:18] [server thread/INFO] [FML]: Holder lookups applied

[16:21:19] [Client thread/FATAL]: Unreported exception thrown!

java.lang.NullPointerException

  at net.minecraft.item.ItemSeeds.getPlant(ItemSeeds.java:61) ~[itemSeeds.class:?]

  at net.minecraft.block.Block.canSustainPlant(Block.java:1905) ~[block.class:?]

  at net.minecraft.item.ItemSeeds.onItemUse(ItemSeeds.java:40) ~[itemSeeds.class:?]

  at net.minecraft.item.ItemStack.onItemUse(ItemStack.java:147) ~[itemStack.class:?]

  at net.minecraft.client.multiplayer.PlayerControllerMP.func_178890_a(PlayerControllerMP.java:442) ~[PlayerControllerMP.class:?]

  at net.minecraft.client.Minecraft.rightClickMouse(Minecraft.java:1571) ~[Minecraft.class:?]

  at net.minecraft.client.Minecraft.runTick(Minecraft.java:2130) ~[Minecraft.class:?]

  at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1087) ~[Minecraft.class:?]

  at net.minecraft.client.Minecraft.run(Minecraft.java:376) [Minecraft.class:?]

  at net.minecraft.client.main.Main.main(Main.java:117) [Main.class:?]

  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_72]

  at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_72]

  at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_72]

  at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_72]

  at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.11.jar:?]

  at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.11.jar:?]

  at net.minecraftforge.gradle.GradleStartCommon.launch(Unknown Source) [start/:?]

  at GradleStart.main(Unknown Source) [start/:?]

[16:21:19] [Client thread/INFO] [sTDOUT]: [net.minecraft.init.Bootstrap:printToSYSOUT:660]: ---- Minecraft Crash Report ----

// Uh... Did I do that?

 

Time: 11/06/15 4:21 PM

Description: Unexpected error

 

java.lang.NullPointerException: Unexpected error

  at net.minecraft.item.ItemSeeds.getPlant(ItemSeeds.java:61)

  at net.minecraft.block.Block.canSustainPlant(Block.java:1905)

  at net.minecraft.item.ItemSeeds.onItemUse(ItemSeeds.java:40)

  at net.minecraft.item.ItemStack.onItemUse(ItemStack.java:147)

  at net.minecraft.client.multiplayer.PlayerControllerMP.func_178890_a(PlayerControllerMP.java:442)

  at net.minecraft.client.Minecraft.rightClickMouse(Minecraft.java:1571)

  at net.minecraft.client.Minecraft.runTick(Minecraft.java:2130)

  at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1087)

  at net.minecraft.client.Minecraft.run(Minecraft.java:376)

  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)

 

 

A detailed walkthrough of the error, its code path and all known details is as follows:

---------------------------------------------------------------------------------------

 

-- Head --

Stacktrace:

  at net.minecraft.item.ItemSeeds.getPlant(ItemSeeds.java:61)

  at net.minecraft.block.Block.canSustainPlant(Block.java:1905)

  at net.minecraft.item.ItemSeeds.onItemUse(ItemSeeds.java:40)

  at net.minecraft.item.ItemStack.onItemUse(ItemStack.java:147)

  at net.minecraft.client.multiplayer.PlayerControllerMP.func_178890_a(PlayerControllerMP.java:442)

  at net.minecraft.client.Minecraft.rightClickMouse(Minecraft.java:1571)

 

-- Affected level --

Details:

  Level name: MpServer

  All players: 1 total; [EntityPlayerSP['jedispencer21'/142, l='MpServer', x=177.93, y=69.29, z=264.21]]

  Chunk stats: MultiplayerChunkCache: 289, 289

  Level seed: 0

  Level generator: ID 00 - default, ver 1. Features enabled: false

  Level generator options:

  Level spawn location: 186.00,64.00,266.00 - World: (186,64,266), Chunk: (at 10,4,10 in 11,16; contains blocks 176,0,256 to 191,255,271), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)

  Level time: 254813 game time, 6000 day time

  Level dimension: 0

  Level storage version: 0x00000 - Unknown?

  Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)

  Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false

  Forced entities: 85 total; --- CUTOUT --- Retry entities: 0 total; []

  Server brand: fml,forge

  Server type: Integrated singleplayer server

Stacktrace:

  at net.minecraft.client.multiplayer.WorldClient.addWorldInfoToCrashReport(WorldClient.java:392)

  at net.minecraft.client.Minecraft.addGraphicsAndWorldToCrashReport(Minecraft.java:2613)

  at net.minecraft.client.Minecraft.run(Minecraft.java:405)

  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)

 

 

 

This is my items:

 

 

public static void initItems()

{

tomato_seeds = RegistryHandler.registerItems(new ItemSeeds(tomato_plant, Blocks.farmland).setUnlocalizedName("tomato_seeds").setCreativeTab(tabGarmoraMaterials));

 

tomato = RegistryHandler.registerItems(new ItemFood(4, 0.1F, false).setUnlocalizedName("tomato").setCreativeTab(CreativeTabs.tabFood));

}

 

public static void initBlocks()

{

tomato_plant = RegistryHandler.registerBlocks(new BlockTomato().setUnlocalizedName("tomato_plant"));

}

 

public static void registerRenders()

{

RenderHelper.registerItemRender(tomato_seeds);

 

RenderHelper.registerItemRender(tomato);

 

RenderHelper.registerBlockRender(tomato_plant);

}

 

 

 

BlockTomato class:

 

 

public class BlockTomato extends BlockCrops

{

protected Item getSeed()

{

return Blocks_and_Items.tomato_seeds;

}

 

protected Item getCrop()

{

return Blocks_and_Items.tomato;

}

}

 

 

 

Render and Register class:

 

 

public class RenderHelper

{

/**

* Registers item model to JSON file.

*/

@SideOnly(Side.CLIENT)

public static void registerItemRender(Item item)

{

Minecraft.getMinecraft().getRenderItem().getItemModelMesher().register(item, 0, new ModelResourceLocation(Strings.MOD_ID + ":" + item.getUnlocalizedName().substring(5), "inventory"));

}

 

/**

* Registers block models to JSON file.

*/

@SideOnly(Side.CLIENT)

public static void registerBlockRender(Block block)

{

Item item = Item.getItemFromBlock(block);

Minecraft.getMinecraft().getRenderItem().getItemModelMesher().register(item, 0, new ModelResourceLocation(Strings.MOD_ID + ":" + item.getUnlocalizedName().substring(5), "inventory"));

}

 

/**

* Registers block models with metadata to JSON file.

*/

@SideOnly(Side.CLIENT)

public static void registerBlockMultiTextures(Block block, int meta, String location)

{

Item item = Item.getItemFromBlock(block);

Minecraft.getMinecraft().getRenderItem().getItemModelMesher().register(item, meta, new ModelResourceLocation(Strings.MOD_ID + location, "inventory"));

}

}

 

public class RegistryHandler

{

private RegistryHandler() {}

 

/**

* A more convenient way of registering Items.

*/

public static Item registerItems(Item item)

{

GameRegistry.registerItem(item, item.getUnlocalizedName().substring(5));

return item;

}

 

/**

* A more convenient way of registering Blocks.

*/

public static Block registerBlocks(Block block)

{

GameRegistry.registerBlock(block, block.getUnlocalizedName().substring(5));

return block;

}

}

 

 

At a wild guess - your initItems is being called before initBlocks, so tomato_plant is null.

 

You might find these general debugging links helpful, they are very useful to track down this kind of error very quickly.

 

http://www.terryanderson.ca/debugging/run.html

http://www.vogella.com/tutorials/EclipseDebugging/article.html

 

-TGG

Ya, that was the problem. I was thinking that but I never thought to try because in my 1.7.10 version of my mod I initialized my items before my blocks and it worked fine.