i have this script (java) and i want it so i can pick it up / equip it with "f" please help

pragma strict

private var survivalScript : GUISurvival;

function Start () { survivalScript = GameObject.Find("FPSController").GetComponent(GUISurvival); }

function OnTriggerEnter (Col : Collider) { if(Col.tag == "Player")

 {
     Destroy(gameObject);
     survivalScript.currentHunger += 10;
 }

}