player inventory contains problem

Hi... I'm trying to check if a inventory contains an item.
But it's not working for some reason...
And i have made sure the chest contains the item... But it jumps straight for the else if... So pi.contains return false... But it should not...

is = a diamond_block
And the EnderChest has a diamond block in it...

So here is the code i have:

Code:

static HashMap<ItemStack, Integer> itemReward = new HashMap<ItemStack, Integer>();
static ArrayList<String> ItemStackList = new ArrayList<String>();

Code:

Inventory pi = player.getEnderChest();
 
                        for(String is : ItemStackList){
                            ItemStack sIS = new ItemStack(Material.getMaterial(is));
                            if(pi.contains(sIS)){
                                if(!(pi.contains(sIS, 64))){
                                    int amount = itemReward.get(sIS);
                                    pi.addItem(new ItemStack(Material.getMaterial(is), amount));
 
                                    String query = "UPDATE users SET reward='1' WHERE `minecraft` = '" + pName + "';";
                                    player.sendMessage("pi.contains");
                                    try {
                                        statement.executeUpdate(query);
                                    } catch (SQLException ee) {
                                        // TODO Auto-generated catch block
                                        ee.printStackTrace();
                                    }
                                  }
 
                                }else if(!(pi.firstEmpty() == -1)){
                                    int amount = itemReward.get(sIS);
                                    pi.addItem(new ItemStack(Material.getMaterial(is), amount));
 
                                    String query = "UPDATE users SET reward='1' WHERE `minecraft` = '" + pName + "';";
 
                                    player.sendMessage("pi.contains else pi.firstempty");
                                    try {
                                        statement.executeUpdate(query);
                                    } catch (SQLException ee) {
                                        // TODO Auto-generated catch block
                                        ee.printStackTrace();
                                    }
}

 

Do you mean something like this?

Code:

 
 
if(inventoryvariable.contains(DIAMOND_BLOCK)){
 
inventoryvariable.addItem(IRON_BLOCK);
 
p.updateInventory();
 

 

facepalm
I guess so yes... But for some reason... when i check for an item in the inventory. And i know the same item is in the inventory... It still returns false... And jumps to my else if...

bump

EDIT by Moderator: merged posts, please use the edit button instead of double posting.