Development Assistance Check if inventory contains item

I want to check if the inventory contains 30 Stone Brick Slabs, but this code doesn't work....
Can someone help my?

This is my code:
if(!(p.getInventory().contains(Material.STEP, 30, (short)5))){
p.sendMessage(ChatColor.RED + "You don't have 30 Stone Brick Slabs.");
return false;
}

 

@Koningpeter Contains isn't 3 arguments, it needs an itemstack. Just check for a new itemstack with all them args.

 

Can you give my the code?

 

@bwfcwalshy
This doesn't work too....

if(!(p.getInventory().contains(new ItemStack(Material.STEP, 30, (short) 5)))){
p.sendMessage(ChatColor.RED + "You don't have 30 Stone Brick Slabs.");
return false;
}

 

@Koningpeter
If you just need the Material (no special name, etc.):
https://hub.spigotmc.org/javadocs/bukkit/org/bukkit/inventory/Inventory.html#contains(org.bukkit.Material, int)
This checks if there are materials summing upto the given int.

If your item has special meta or anything:
https://hub.spigotmc.org/javadocs/bukkit/org/bukkit/inventory/Inventory.html#containsAtLeast(org.bukkit.inventory.ItemStack, int)
This checks if there are given ItemStacks summing up to the given int.

 

@I Al Istannen
But how can I use (short)
I have Material and amout.....

 

@Koningpeter short? What do you want to do with this? If you just need "amount" "material" use the first link.

 

@I Al Istannen
Material.STONE_BRICK_SLAB does not exist
You need Material.STEP, (short) 5