i decided to compile everything into one pastebin in order to not spam the chat as much
i am having a problem with this item. here is my preinit:

    public static Item es;
    @EventHandler
    public void preInit(FMLInitializationEvent event) {
    	//Emerald sword
    	es = new EmeraldSword();
    	GameRegistry.registerItem(es, "emerald_sword");
    }

and here is my item class:

import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.item.Item;

public class EmeraldSword extends Item
{
	public EmeraldSword() {
		setMaxStackSize(64);
		setCreativeTab(CreativeTabs.tabMisc);
		setUnlocalizedName("emerald_sword");
	}
}

however, everytime i try to make a recipe for it, the item won't show up. basically, when i type ItemStacks(Items.emerald_sword) it doesn't work because emerald_sword isn't recognized. what's the problem here?