Code

//Main CLass
public class Main extends OtherClass implements Listener {
	ArrayList<Player> WantedArray = new ArrayList<Player>();
	public void onEnable() {
		Bukkit.getServer().getPluginManager().registerEvents(this, this);
		getConfig().options().copyDefaults(true);
		saveResource("config.yml", false);

		Launchables2 lo = new Launchables2(this);
		getServer().getPluginManager().registerEvents(lo, this);
	}

}

//Other Class
public class OtherClass extends JavaPlugin implements Listener {
	private Main plugin;
	private Main WantedArray;
	public OtherClass(Main loq) {
		this.plugin = loq;
	}
	@EventHandler
	public void WantedArray(PlayerInteractEvent e) {
		if(WanttedArray.contains(player)) { //contains can't get the player
		}
	}

}