My title might not be the clearest. What I mean is; I have a tonne of -

 

 public static Block myBlock;
static int myBlockID

 

- declarations, and I wondered if I could instead put them in a separate class?

 

~ Hydro

Yes you can! All you have to do is, take for instance ID's "IDList.java" or what ever you want to name it, inside "public static int Block1ID = 1234" then you can use that with "IDList.Block1ID". Same thing can be done for block / items.

Yeah you totally can!

Makes your @Mod file look much nicer

I do recommend that you take a look into Phaimar's tutorials (skip part 3 tough as part 4 is remake inn a much better way )

He's code is nicely organized and if you take a look into EE3's soruce code you can see some nice things he's doing to keep his code much more reader friendly

 

I got a class called ModBlocks where I got all my blocks setup, so inn my @mod file all I do is this inn  @PreIni method:

 ModBlocks.init();

 

This is the ModBlocks class:

    
public class ModBlocks {
    public static BlockFurnaceChest blockFurnaceChest;
    public static void init(){
        blockFurnaceChest = new BlockFurnaceChest(689, Material.anvil);
        GameRegistry.registerBlock(blockFurnaceChest, "FurnaceChest");
       initializeRecipes();
    }

    private static void initializeRecipes() {  
  
    }