How would i add crafting recipes to a custom crafting table

You would find how that custom crafting table stores it's recipe list, and then add to it....

Cant really help much on such a vague question.

ok i have the recipe list, the manager ,inventory,inv result i want to make it so

that when i put a certain recipe in the compactor it shows but all i have at the moment is a blank useless crafting gui inside the compactor what i want to know is how would i register the recipe's to the compactor like make the crafting result display when you put a defined recipe in

Ah, you should look into how minecraft does it, go look at the Crafting table's Container class.

ok i have had a look and changed it to what i think is correct but it gives an error in the Compactor manager this is my code

 

package net.minecraft.src;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;

public class CompactorManager
{
    /** The static instance of this class */
    private static final CompactorManager instance = new CompactorManager();

    /** A list of all the recipes added */
    private List recipes = new ArrayList();

    /**
     * Returns the static instance of this class
     */
    public static final CompactorManager getInstance()
    {
        return instance;
    }

    private CompactorManager()
    {
        this.addRecipe(new ItemStack(mod_Blastcraft.blastwall), new Object[]{"@#@","@#@","@#@",Character.valueOf('#'),mod_Blastcraft.rebarmesh,Character.valueOf('@'),Block.brick});       
        System.out.println(this.recipes.size() + " recipes");
    }

    /**
     * Adds a recipe. See spreadsheet on first page for details.
     */
    void addRecipe(ItemStack par1ItemStack, Object ... par2ArrayOfObj)
    {
        String var3 = "";
        int var4 = 0;
        int var5 = 0;
        int var6 = 0;

        if (par2ArrayOfObj[var4] instanceof String[])
        {
            String[] var7 = (String[])((String[])par2ArrayOfObj[var4++]);

            for (int var8 = 0; var8 < var7.length; ++var8)
            {
                String var9 = var7[var8];
                ++var6;
                var5 = var9.length();
                var3 = var3 + var9;
            }
        }
        else
        {
            while (par2ArrayOfObj[var4] instanceof String)
            {
                String var11 = (String)par2ArrayOfObj[var4++];
                ++var6;
                var5 = var11.length();
                var3 = var3 + var11;
            }
        }

        HashMap var12;

        for (var12 = new HashMap(); var4 < par2ArrayOfObj.length; var4 += 2)
        {
            Character var13 = (Character)par2ArrayOfObj[var4];
            ItemStack var14 = null;

            if (par2ArrayOfObj[var4 + 1] instanceof Item)
            {
                var14 = new ItemStack((Item)par2ArrayOfObj[var4 + 1]);
            }
            else if (par2ArrayOfObj[var4 + 1] instanceof Block)
            {
                var14 = new ItemStack((Block)par2ArrayOfObj[var4 + 1], 1, -1);
            }
            else if (par2ArrayOfObj[var4 + 1] instanceof ItemStack)
            {
                var14 = (ItemStack)par2ArrayOfObj[var4 + 1];
            }

            var12.put(var13, var14);
        }

        ItemStack[] var15 = new ItemStack[var5 * var6];

        for (int var16 = 0; var16 < var5 * var6; ++var16)
        {
            char var10 = var3.charAt(var16);

            if (var12.containsKey(Character.valueOf(var10)))
            {
                var15[var16] = ((ItemStack)var12.get(Character.valueOf(var10))).copy();
            }
            else
            {
                var15[var16] = null;
            }
        }

        this.recipes.add(new ShapedRecipes(var5, var6, var15, par1ItemStack));
    }

    public ItemStack findMatchingRecipe(Inventorycompactor par1InventoryCrafting)
    {
        int var2 = 0;
        ItemStack var3 = null;
        ItemStack var4 = null;
        int var5;

        for (var5 = 0; var5 < par1InventoryCrafting.getSizeInventory(); ++var5)
        {
            ItemStack var6 = par1InventoryCrafting.getStackInSlot(var5);

            if (var6 != null)
            {
                if (var2 == 0)
                {
                    var3 = var6;
                }

                if (var2 == 1)
                {
                    var4 = var6;
                }

                ++var2;
            }
        }

        if (var2 == 2 && var3.itemID == var4.itemID && var3.stackSize == 1 && var4.stackSize == 1 && Item.itemsList[var3.itemID].isRepairable())
        {
            Item var11 = Item.itemsList[var3.itemID];
            int var10 = var11.getMaxDamage() - var3.getItemDamageForDisplay();
            int var7 = var11.getMaxDamage() - var4.getItemDamageForDisplay();
            int var8 = var10 + var7 + var11.getMaxDamage() * 10 / 100;
            int var9 = var11.getMaxDamage() - var8;

            if (var9 < 0)
            {
                var9 = 0;
            }

            return new ItemStack(var3.itemID, 1, var9);
        }
        else
        {
            for (var5 = 0; var5 < this.recipes.size(); ++var5)
            {
                IRecipe var12 = (IRecipe)this.recipes.get(var5);

                if (var12.matches(par1InventoryCrafting))
                {
                    return var12.getCraftingResult(par1InventoryCrafting);
                }
            }

            return null;
        }
    }

    /**
     * returns the List<> of all recipes
     */
    public List getRecipeList()
    {
        return this.recipes;
    }
}

 

it give the error at this section of code

                if (var12.matches(par1InventoryCrafting))
                {
                    return var12.getCraftingResult(par1InventoryCrafting);
                }

do i need to make my own IRecipe?

Look at furnace it has its own recipe list it pulls from to find what it can smelt.