Give random player item

Hey Bukkit!
Today I have a question, on how to give a random player inside a "section" an item.
So, I have created something where if you get a water bottle and you drink it, it fills your hunger, and heals you, (This is for a small minigame I am working on) How would I go about choosing a random person inside the arena to give them a water bottle? (Do I need an arena to give them a water bottle if not that then that works too!)
Thanks for any help!
- Glass

 

Glass_Eater84

How are you keeping track of which players are in the arena?

 

I suggest using a Hashmap to store all your player names. Get a random Number (use the Math.random() function and multiply it by 30 and round the number) and iterate through the hashmap that many times. Then give the player selec5ed the item.

 

Take your list/array/hashmap/set or whatever you are storing your players in, use
String player = list.get(new Random().nextInt(/*SIZE OF THE LIST*/)-1);
or if it is an array use
String player = array[new Random().nextInt(/*SIZE OF THE LIST*/)-1];

Then get the player and do whatever you want.

 

This will help rather than handing out code. http://docs.oracle.com/javase/7/docs/api/java/util/Random.html