Add Minecraft 1.8 Item Recipe with Eclipse?

Me and my friend are currently sitting on a Minecraft mod for the 1.8 version, and want to add some new recipes, but the code shown in the picture does not work, because Minecraft always crashes right on the start… How do I get the recipe in now?

Haha. Image.

Error message?

An error message would be good.

Here:

After a change, I make it to the workbench, then it crashes again

Here:

have changed something, now it crashes only in the workbench

Your object points to nothing, that is, it is zero. Either you have initialized it wrong or it does not exist. But that's hard to say, since Minecraft is certainly complex and has many dependencies.

How do you mean? Have not created a new item, but only changed a recipe: For a bed you need 3x Cobblestone side by side

Uii. I do not know if that's easy. Modifying certainly requires customization somewhere in the code. But I have never looked at the Minecraft Code, so I do not know any details.