Solved Removing exp from diamond ore

I was just messing around, trying to remove exp drop from diamond ore, and it seemed to fail; so now I'm wondering why.

Code:java

    public void onEnable() {
        getServer().getPluginManager().registerEvents(this, this);
    }
 
    @EventHandler
    public void onBreakOreBlock(BlockBreakEvent e) {
        if (e.getBlock().equals(Material.DIAMOND_ORE)) {
            e.setExpToDrop(0);
        }
    }

No errors, just nothing is happening.

Never mind, I forgot to use getType() lol.

EDIT by Moderator: merged posts, please use the edit button instead of double posting.