Check if a player is standing on dirt?

How can I check if a player is standing on dirt?

 

if(player.getLocation().getBlock().getRelative(BlockFace.DOWN).getType().equals(Material.DIRT)){


}

 

if (player.getLocation().getBlock().getType() == Material.DIRT) {
// standing on dirt
}

slightly abbreviated i think but based on the java docs i think that would work.

haha i was sooo close.

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

 

Ok now I got that on player move and another code how do I make onplayermove activate and deactivate by a command?

 

Make a HashSet or a List of Player's, make the command put a player in or out depending if it already has that player, then check if the player is in it before you check the block