Container

package dmz.icefeeling.ivi.tests;

import net.minecraft.client.resources.I18n;
import net.minecraft.entity.item.EntityItem;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.InventoryPlayer;
import net.minecraft.inventory.Container;
import net.minecraft.inventory.ContainerBrewingStand;
import net.minecraft.inventory.ICrafting;
import net.minecraft.inventory.IInventory;
import net.minecraft.inventory.InventoryCrafting;
import net.minecraft.inventory.Slot;
import net.minecraft.item.ItemStack;
import net.minecraft.item.crafting.FurnaceRecipes;
import net.minecraft.tileentity.TileEntityFurnace;
import net.minecraft.world.World;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;

public class ContainerObsidianAnvil extends Container {

private TileEntityObsidianAnvil TEO;

public ContainerObsidianAnvil(IInventory playerIn, TileEntityObsidianAnvil TEO) {
        this.TEO = TEO;

        this.addSlotToContainer(new Slot(TEO, 0, 1+9, 2+8));
        //Player Inventory
       /* for (int y = 0; y < 3; ++y) {
            for (int x = 0; x < 9; ++x) {
                this.addSlotToContainer(new Slot(playerIn, x + y * 9 + 9, 8 + x * 18, 41 + y * 18));
            }
        }
        //Player Hotbar
        for (int x = 0; x < 9; ++x) {
            this.addSlotToContainer(new Slot(playerIn, x, 8 + x * 18, 99));
        }*/
        for (int i = 0; i < 3; ++i)
        {
            for (int j = 0; j < 9; ++j)
            {
                this.addSlotToContainer(new Slot(playerIn, j + i * 9 + 9, 8 + j * 18, 84 + i * 18));
            }
        }

        for (int k = 0; k < 9; ++k)
        {
            this.addSlotToContainer(new Slot(playerIn, k, 8 + k * 18, 142));
        }
}
    @Override
    public boolean canInteractWith(EntityPlayer playerIn) {
        return this.TEO.isUseableByPlayer(playerIn);
    }
    @Override
    public ItemStack transferStackInSlot(EntityPlayer playerIn, int fromSlot) {
        {
            ItemStack previous = null;
            Slot slot = (Slot) this.inventorySlots.get(fromSlot);

            if (slot != null && slot.getHasStack()) {
                ItemStack current = slot.getStack();
                previous = current.copy();

                if (fromSlot < 9) {
                    // From TE Inventory to Player Inventory
                    if (!this.mergeItemStack(current, 9, 45, true))
                        return null;
                } else {
                    // From Player Inventory to TE Inventory
                    if (!this.mergeItemStack(current, 0, 9, false))
                        return null;
                }

                if (current.stackSize == 0)
                    slot.putStack((ItemStack) null);
                else
                    slot.onSlotChanged();

                if (current.stackSize == previous.stackSize)
                    return null;
                slot.onPickupFromSlot(playerIn, current);
            }
            return previous;
        }
    }
}