Data sharing between threads in robocode

This is my first post to this grup and I have a little problem with
sharing a static object between threads. There is two thread class and
each of them refer to a static object of a third class through static
methods of the same class.

Problem is, when they refer to that static member, I realised that they
don't refer to same object although I declared it static.

// This is the third class that I mentioned above
public class Repository {
    public static ArrayList<String> enemyNames = new
ArrayList<String>();
    public static HashMap<String, EnemyBot> enemies = new
HashMap<String, EnemyBot>();
    public static HashMap<String, TeamBot> teammates = new
HashMap<String, TeamBot>();

    public Repository() {

    }

    public static synchronized void
updateEnemyRepository(ScannedRobotEvent event, TeamRobot myRobot)
    {
       ....
    }

public class WarTorch extends TeamRobot
{
    public void run()
        {
        while(true)
                {
                    setTurnRadarRight(Integer.MAX_VALUE);
                    execute();
        }
    }

    public void onScannedRobot(ScannedRobotEvent e)
        {
                // Here this class refer to the third class.
        Repository.updateEnemyRepository(e, this);
                for (Iterator it = Repository.enemyNames.iterator();
it.hasNext();) {
                    Object key = (String) it.next();

                    System.out.println(key + " - "
+Repository.enemies.get((String)key).getRobotName() + ", " +
Repository.enemies.get((String)key).getCoordinates());
                    System.out.println(e.getName());
                }
    }