Trying to remove Item from slot number

Code:java

private void removethisItemnameFormInventory(Player player,String s,int selectedSlot)
{
player.sendMessage("Removing " + s);
for(int i = 0; i <= 35; i++)
{
if (player.getInventory().getItem(i) != null)
{
player.sendMessage("1Check at : " + String.valueOf(i) + " Found "
+ player.getInventory().getItem(i).getItemMeta().getDisplayName());
if(player.getInventory().getItem(i).getItemMeta().getDisplayName() != null
&& player.getInventory().getItem(i).getItemMeta().getDisplayName().contains(s))
{
player.sendMessage("2At = " + String.valueOf(i) + "Selected slot is" + String.valueOf(selectedSlot));
if (i != selectedSlot)
{
player.sendMessage("3At i != selectedSlot");
player.getInventory().clear(i);
}
}
}
}
}

For my case is this

I got this messages.
"Removing ItemB"
"1Check at : 0 Found ItemB"
"2At = 0Selected slot is1"
"3At i != selectedSlot"
"1Check at : 1 Found ItemB"
"2At = 1Selected slot is1"

But both Items still not remove why?
I had tried:
player.getInventory().clear(i);
player.getInventory().setItem(i, null);
player.getInventory().setItem(i, new ItemStack(Material.AIR));
player.getInventory().setItem(i, new ItemStack(Material.AIR , 0));

all above code doesn't work.
How to remove ItemStack from slot number
Please anyone help me ?

 

Wouldn't that be just removing the lapis block from the player's inventory completely?

 

MarinD99, well I think I have misunderstood what he wants then

 

try updating the inventory after you set it to air / cleared the slot.

 

The method updateInventory() from the type Player is deprecated

 

Its been deprecated since ages.

deprecated doesn't mean that it is not working

Only means that they plan on replacing it / not supporting it in the future but for now it works and will work most likely until they find a better replacement