NullPointerException when punching air

I keep getting NullPointerException when punching while holding nothing.

if (event.getAction() == Action.LEFT_CLICK_AIR || event.getAction() == Action.LEFT_CLICK_BLOCK) {
if (player.getItemInHand().getItemMeta().getDisplayName().equals(ChatColor.WHITE + "Booster")) { // ERROR HERE ON 2nd LINE
if (player.getInventory().containsAtLeast(ThirtyTwoWool, 32)) {
quickBits.removeItems(Material.WOOL, 32, player);
Vector launch = player.getLocation().getDirection();
launch.multiply(1.4);
launch.setY(2);
player.setVelocity(launch);
}

It is a PlayerInteractEvent btw. Ive tried a lot of things like canceling the event if the player is holding null, but nothing seems to work.

 

@quasar098

Code:Java

if (player.getItemInHand().getItemMeta().getDisplayName().equals(ChatColor.WHITE + "Booster")) {

Two things can cause the NullPointerException here:

• getItemMeta().getDisplayName()
  
• getDisplayName().equals(ChatColor.WHITE + "Booster")

The ItemMeta can be null, or the display name can be null. You should not try to compress all of this into a single line. There is no problem with separating it, in fact, it is even preferred because it increases readability.

 

ok ty