Ore Gen Code

package me.henderry2019.OreGen;

import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.init.Items;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import cpw.mods.fml.common.Mod;
import cpw.mods.fml.common.event.FMLInitializationEvent;
import cpw.mods.fml.common.event.FMLPostInitializationEvent;
import cpw.mods.fml.common.event.FMLPreInitializationEvent;
import cpw.mods.fml.common.registry.GameRegistry;

@Mod(modid = "og", name = "OreGen", version = "1.0")
public class OreGen {

    public static Item itemRuby;
    public static Block blockRuby;

    public void preInit(FMLPreInitializationEvent event) {
        itemRuby = new ItemRuby().setUnlocalizedName("Ruby").setTextureName("og:itemruby").setCreativeTab(tabOreGenMod);
        blockRuby = new BlockRuby(Material.rock).setBlockName("RubyOre").setBlockTextureName("og:blockruby").setCreativeTab(tabOreGenMod);

        GameRegistry.registerBlock(blockRuby, blockRuby.getUnlocalizedName().substring(5));
        GameRegistry.registerItem(itemRuby, itemRuby.getUnlocalizedName().substring(5));

        //Registering the generation, new (name). Name is the name of the generation class.
        GameRegistry.registerWorldGenerator(new Generation(), 0);
    }

    public void init(FMLInitializationEvent event) {

    }

    public void postInit(FMLPostInitializationEvent event) {

    }

    public static CreativeTabs tabOreGenMod = new CreativeTabs("tabOreGenMod"){
        @Override
        public Item getTabIconItem(){
            return new ItemStack(itemRuby).getItem();
        }
    };
}