Check full inv

Like the title says how would I check if a players inventory is full.

EDIT:

I think i got it by checking if inv.firstEmpty() < 0

 

I would do something like this (Not checked if it works):

Code:

public boolean isPlayerInventoryFull(Player player) {
    ItemStack[] contents = player.getInventory().getContents();
        for (ItemStack itemStack : contents) {
            if (itemStack == null) {
                return false;
            }
        }
        return true;
}

 

Code:java

 
public boolean isPlayerInventoryFull(PlayerInventory inv) {
	(inv.firstEmpty() < 0) ? return true : return false;
}
 

I'm going to try that, also I seem to have another problem when I give the diamond to a player it is nommable(I can eat it ). I thought maybe it was because I never sent ply.updateInventory() but it looks like that is depreciated.

What I am trying to do is this

Code:java

 
public void onSpoutCraftEnable(SpoutCraftEnableEvent event) {
	Player ply = event.getPlayer();
	ItemStack stack = new ItemStack(264);
	PlayerInventory inv = ply.getInventory();
 
	if(hasSpout(ply.getName())){
		/* do nothing*/
	}
	else if(inv.firstEmpty() < 0){
		ply.sendMessage(ChatColor.RED + "Your inventory is full please make some space and rejoin!");
	}
	else{
		inv.addItem(stack);
		countPlayer(ply.getName());
		ply.sendMessage(ChatColor.AQUA + "Here is that Diamond!");
	}
}
 

So how do I give the diamond properly?

EDIT:
Ahh I got it, args1 of the ItemStack needed to be quantity.