NullPointerException with boolean check

The code below is suppose to check if an item has an item meta, and return false if it doesn't. However, when I run the loop, I receive a NullPointerException at

Code:java

if (is.hasItemMeta())

Full Code:

Code:java

                for (ItemStack is : inventory) {
 
                    // TEST
                    if (is != null && !is.equals(Material.AIR)) {
 
                        continue;
                    }
 
                    if (is.hasItemMeta()){
 
 
                        continue;
                    }
 
                }

Thanks for the help!

 

Colby l
That's because if the player has an empty slot it'll return null.

So add this just after the for loop.

Code:

if(is == null){
    continue;
}

 

Also. Not related to your current problem, but to one you are likely to get in the future. The ItemStack will never be equal to a Material. Use the item stack's type to compare.