I'm probably an idiot, but why isn't this working?

http://pastebin.com/JRxiuGZG

 

Also, if I did get this working, how would I convert an Entity to EntityPlayer?

I forgot that, but when I added it I got this error:

"The method onUpdate(ItemStack, World, Entity, int, boolean) of type heartMK1 must override or implement a supertype method"

 

Do I need to add it to my item superclass?

you need to learn java seriously. the @override annotation is there to warn you that you are NOT overwriting. and you are like "oh its giving me a compile error, ill better be deleting that"

Look up the signature of the method u want to override. ask eclipse for help with overwriting. check if u extended the class correct.

Check if you extended the class

 

+1 Your class should extend Item.

Thanks a load, I just realised that I didn't import minecraft's entity. Also, it's not that I removed @Override, I forgot to add it in the first place Works perfectly now, thanks guys!