Minecraft Wiki: Adding a Recipe

package net.minecraft.src;

public class mod_myMod extends BaseMod
{
    public void addRecipes()
    {
        ModLoader.addRecipe(new ItemStack(Item.diamond, 2), new Object[] { "DDD", "DDD", "DDD", 'D', Block.cobblestone});
        ModLoader.addRecipe(new ItemStack(Block.whiteStone, 64), new Object[] { "W $", " S ", "s E", 'W', new ItemStack(Block.wood, 1, 2), '$', Item.stick, 'S', Block.sand, 's', Block.sapling, 'E', Item.enderPearl });
        ModLoader.addShapelessRecipe(new ItemStack(Block.grass, 1), new Object[] { Item.seeds, new ItemStack(Block.wood, 1, 3) });
        ModLoader.addSmelting(Block.dirt.blockID, new ItemStack(Item.dyePowder, 32, 4));
    }

    public void load()
    {
        this.addRecipes();
    }

    public String getVersion()
    {
        return "Version 1.0";
    }
}