Command to convert cactus to cactus green

Hi, I've been trying for a few days to do this but I haven't figured it out yet. If someone could tell me how to do it that would be awesome

 

@Baconer

- What do you mean with 'convert' ?
- What have you tried?

 

@Baconer Remove the cactus. Add the cactus green.

 

More in-depth would be:

>On Command
Check if inventory contains cactus.
Inside for loop going through the inventory:
- Check if cactus
- Get the slot of cactus.
- Set Cactus Green at slot of cactus.

Untested, probably can be condensed:

Code:

if (label.equalsIgnoreCase("scan")){
            if ((sender instanceof Player)){
                Player p = (Player) sender;
                Inventory inv = p.getInventory();
                if(inv.contains(Material.CACTUS)){
                    ItemStack cg = new ItemStack(Material.INK_SACK);
                    cg.setDurability((short) 2);
                    for(int i=0;i<inv.getSize();i++){
                        if(inv.getItem(i).getType().equals(Material.CACTUS)){
                            cg.setAmount(inv.getItem(i).getAmount());
                            inv.setItem(i, cg);
                        }
                    }
                }
            }
        }

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

 

@TheOatBaron Please don't spoonfeed, and you seem to be making assumptions about the OP's use case here

 

I am going to use
@TheOatBaron 's code and explain it with annotations.

Code:

if (label.equalsIgnoreCase("scan")){
//See if a player runs the command /scan
            if ((sender instanceof Player)){
//check to see if the actual thing running the command is a player not a console
                Player p = (Player) sender;
//define the player sending the command as p
                Inventory inv = p.getInventory();
// define the player's inventory
                if(inv.contains(Material.CACTUS)){
//check if his inventory has cactus in it
                    ItemStack cg = new
ItemStack(Material.INK_SACK);
//declare an item as an ink sac
                    cg.setDurability((short) 2);
// setting the durrability so it is cactus green
                    for(int i=0;i<inv.getSize();i++){
//simple for loop with integers saying that if the i is less than the inventory size, add.
                        if(inv.getItem(i).getType().equals(Material.CACTUS)){
//checking to see if the player has cactus
                            cg.setAmount(inv.getItem(i).getAmount());
                            inv.setItem(i, cg);
//replacing the item
                        }
                    }
                }
            }
        }

 

Seeing code in action is a lot easier to comprehend then saying what to do.

@MooshViolet Thanks!