How do I access hashmap from different class?

How can i use the hashmap party? from the main class to the entitylistener.
When I try it now it spams 2 lines of error. I did to "extends main".
So how do i make this work properly?

Class: Main

Code:

    public final HashMap<Player, Integer> party = new HashMap<Player, Integer>();

Class: EntityListener

Code:

    @EventHandler
    public void onEntityDamage(EntityDamageByEntityEvent event) {
        if (event.getDamager() instanceof Player && event.getEntity() instanceof Player) {
            if(party.get((Player) event.getDamager()) == party.get((Player) event.getEntity())){
                event.setCancelled(true);
                return;
            }
        }

 

extends doesnt work like that. What you need to do is pass an instance of Main to your listener. Or, if you dont use the hashmap in your main class you can just create the hashmap in your listener class.

 

Code:

public class EntityListener implements Listener, Main{

it says something about it must be a interface.

And I cant set the hashmap to the entitylistener. all the commands are connected to the hashmap in the main.

 

Dont implement main. It doenst work that way. The way to correctly pass the hashmap would be to have a constructor that includes it:

public class EntityListener implements Listener{
Main pl;
public EntityListener(Main plugin){
pl = plugin;
}

then to modify it:

pl.party.get("ILIKETURTLES");

or have a modifier method in main and call it:
pl.setParty("ILIKETURTLES",999)

Protip: dont use a hashmap with Player in it, String will suffice because you can use player.getName().

 

i had a very similar problem to this but with a location and not a hasmap , basically you have to create a "constructor", heres the thread that solved this for me

http://forums.bukkit.org/threads/he...variables-between-classes.95688/#post-1301590