public class Main extends JavaPlugin {
    public static CustomRecipe customRecipe;
    public void onEnable(){
        customRecipe = new CustomRecipe(this);
    }
}

Recipe recipe = new Recipe();
recipe.setLoose(false);
recipe.setResult(new ItemStack(Material.DIAMOND));
        
final ItemStack REDSTONE = new ItemStack(Material.REDSTONE);
recipe.setRecipe(
     new MatrixItem(REDSTONE, 0),
     null,
     new MatrixItem(REDSTONE, 2),
     null,
     new MatrixItem(REDSTONE, 4)
);
     
customRecipe.addRecipe("REDSTONE_TO_DIAMOND", recipe);

Recipe recipe = new Recipe();
recipe.setLoose(false);
recipe.setResult(result);
        
recipe.setRecipe(
     new MatrixItem(red, 0),
     new MatrixItem(red, 1),
     new MatrixItem(red, 2),
     new MatrixItem(red, 3),
     new MatrixItem(new ItemStack(Material.APPLE), 4),
     new MatrixItem(red, 5),
     new MatrixItem(red, 6),
     new MatrixItem(red, 7),
     new MatrixItem(red, 8)
);
     
customRecipe.addRecipe("APPLE_REDSTONE", recipe);

// Item Result
ItemStack result = new ItemStack(Material.APPLE);
ItemMeta itemMeta = result.getItemMeta();
itemMeta.setDisplayName("§cMaça de Redstone");
result.addUnsafeEnchantment(Enchantment.LUCK,1);
itemMeta.addItemFlags(ItemFlag.HIDE_ENCHANTS);
result.setItemMeta(itemMeta);

// Item Craft
ItemStack redstone = new ItemStack(Material.REDSTONE);
itemMeta = red.getItemMeta();
itemMeta.setDisplayName("§c§lRedstone");
redstone.addUnsafeEnchantment(Enchantment.LUCK,1);
itemMeta.addItemFlags(ItemFlag.HIDE_ENCHANTS);
redstone.setItemMeta(itemMeta);