[1.8.1 Mod Creation] How to make Multi-Textured blocks!

ok this goes into ChargeBlock.java

Code:

package net.minecraft.src;
import java.util.Random;

public class ChargeBlock extends Block
{
    // Top texture will be the same for bottom.
    private int topTexture = ModLoader.addOverride( "/terrain.png", "/chargetop.png");
    private int sideTexture = ModLoader.addOverride( "/terrain.png", "/chargeside.png");
    private int frontOn = ModLoader.addOverride( "/terrain.png", "/chargefronton.png");
    private int FrontOff = ModLoader.addOverride( "/terrain.png", "/chargefrontoff.png");

    protected ChargeBlock(int i, int j)
    {
        super(i, j, Material.wood);
    }

    public int getBlockTextureFromSide(int i)
    {
        if(i == 0 || i == 1)                                  // 0 is the bottom texture, 1 is the top
            return topTexture;            // in theory, the ModLoader.addOverride will work here, but having separate variables for them is much neater.
        else
        if(i == 1 || i == 2)   
            return frontOn;
        else
      return sideTexture;
    }
}

This goes into mod_ChargeBlock:

Code:

package net.minecraft.src;
import java.util.Random;

public class mod_ChargeBlock extends BaseMod
{


   public static final Block chargeBlock = new ChargeBlock(197,0).setHardness(0.0F).setResistance(5.0F).setLightValue(1.0F).setBlockName("asdf");
   
 


   public mod_ChargeBlock()
   {   


      ModLoader.RegisterBlock(chargeBlock);
      ModLoader.AddName(chargeBlock, "chargeBlock");
      ModLoader.AddRecipe(new ItemStack(chargeBlock, 10), new Object[] {
         " * ", Character.valueOf('*'), Block.dirt
      });
   }

   public String Version()
   {
      return "1.8.1";
   }
}

Please, explain it. Don't just copy/paste.

Its very simple really just read it don't post a comment without reading it full detail.
This how the furnace does it. What do you think private int toptextue means.

Lol hmmmm idk? xD

here austin the code is here for it I will send a link to it its more simple and you only need to put it into the namhere.class you then edit the textures it works the same as yours

Code:

 public int getBlockTexture(IBlockAccess iblockaccess, int i, int j, int k, int l)
    {
        if(l == 1)
        {
            return blockIndexInTexture + 17;
        }
        if(l == 0)
        {
            return blockIndexInTexture + 17;
        }
        int i1 = iblockaccess.getBlockMetadata(i, j, k);
        if(l != i1)
        {
            return blockIndexInTexture;
        }
        if(isActive)
        {
            return blockIndexInTexture + 16;
        } else
        {
            return blockIndexInTexture - 1;
        }
    }

and then I think you might need this

Code:

public int getBlockTextureFromSide(int i)
    {
        if(i == 1)
        {
            return blockIndexInTexture + 17;
        }
        if(i == 0)
        {
            return blockIndexInTexture + 17;
        }
        if(i == 3)
        {
            return blockIndexInTexture - 1;
        } else
        {
            return blockIndexInTexture;
        }
    }

How would I make this with MineForge? [Reading it from a spritesheet rather than a .addOverride]

Not sure