output duplication!

[mumaga]

Hi,

I am working on the World of Zuul. I am adding the take item command, when I envoke it, the output prints twice!

The main class is Game, this is the take method. 

     public void takeItem(Command command)
     (
         if (!command.hasSecondWord())(
                // if there is no second word, we dont know which item to take
                System.out.println("Which Item 9otli ya mja9ji9?");
                return;
         )
         String itemToBePicked = command.getSecondWord();

         playerInventory.addItemToInventory(itemToBePicked);
         if (playerInventory.addItemToInventory(itemToBePicked))
         (
             currentRoom.removeItem(itemToBePicked);
         )         
         return;
     )

method in Inventory (instance playerInventory)

public boolean addItemToInventory(String itemToBePicked)
    (
        //checking the weight constraint

        if (canBePicked(itemToBePicked))
        (
            Item x = allItems.get(itemToBePicked);
            itemInventory.put(itemToBePicked, x);
            inventoryWeight = inventoryWeight + x.getItemWeight();
            System.out.println("You have added " + x.getItemName() + "to your inventory");
            return true;
        )
        else if ((game.checkAvailability(itemToBePicked)))
            (
                System.out.println("You have exceeded the maximum weight");
                return false;
            )
        else 
            (
            System.out.println( itemToBePicked + " is not present in the current room");
            return false;
        )

 public boolean canBePicked(String itemToBePicked)
        (
            Item x = allItems.get(itemToBePicked);
                int totalWeight = x.getItemWeight()+ inventoryWeight;

            if ((game.checkAvailability(itemToBePicked))||(totalWeight <= maxWeight))
            (         
                    return true;
            )
            else
            (
            return false;
            )

        )
    and the checkAvailability in Game:

public boolean checkAvailability(String itemToBePicked)
    (
        return currentRoom.checkItem(itemToBePicked);
    )
 and the method from Room (instance currentRoom)

public boolean checkItem(String itemToBePicked)
    )
        int n=items.size();
        for (int i=0 ; i<n ; i++){
                Item x = items.get(i);
                if ((x.getItemName()).equals(itemToBePicked))
                (
                    return true;
                )
            (
            return false;
            )

couldnt figure out why the output line always appears twice! like: 
you have added computer to your inventory
you have added computer to your inventory

any help is much appreciated!

[mvmalderen]

couldnt figure out why the output line always appears twice! like:
you have added computer to your inventory
you have added computer to your inventory

My first guess would be the following code from takeItem():

     playerInventory.addItemToInventory(itemToBePicked); // line 16
     if (playerInventory.addItemToInventory(itemToBePicked)) // line 17

Notice that addItemToInventory() is called twice in a row here.

[mumaga]

i guess your right!

thank you for answering!