This is problem I am facing because of minecraft recipe letting you combine two low durabilty bows to make one okay durability bow. it also works with tools and anything else with durability. I call it durability recipe.

 

I have an item(powerCore) that has durability. powerCore takes damage from crafting table when used. It has a maxdamage of 50. I don't want players to combine two of powerCore and get a third core with durability combined(from 1st and 2nd core) because my powerCore do not disappear on use in crafting table but take damage. This allows a loophole for infinite powercores after a persons gets two.

 

I want to remove this recipe for my item only it should work with all the minecraft tools like it already does.

I'm not entirely sure about this, its been a while since I messed with this function, but try:

 

    @Override
    public boolean getIsRepairable(ItemStack par1ItemStack, ItemStack par2ItemStack) {
    	if(par1ItemStack.getItem() == par2ItemStack.getItem()) {
    		return false;
    	}
    }

 

In your item class

Thank you so much.The code you gave for was for anvil which i also needed but you got me thinking and i found this in the item class and it works.I have been trying to fix this for days and your solution helped me in a second

@Override
public boolean isRepairable()
    {
        return false;
    }

Ah, yes. isRepairable.

Glad you found what you needed.  *salute*