Solved Hashmap(s) clearing on reload

Hello, everytime i reload my server, a hashmap gets re-initializated. It gets keys when a player joins and looses keys when they leave. But when i reload the server, there are still players online, and the hashmap doesn't have any key. I tried to re-put all the keys with the "onReload" event, but for some reasons the FOR_EACH construct doesn't work properly. Here's the code, re-adapted for you:

Code:

import java.util.HashMap;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.event.player.PlayerQuitEvent;
import org.bukkit.plugin.java.JavaPlugin;
 
import com.hotmail.amberofsickness.main;
 
public class main extends JavaPlugin {
    HashMap<String, Boolean> HM = new HashMap<String, Boolean>();
   
   
    Player[] Players() {
        return getServer().getOnlinePlayers();
    }
   
    boolean ThisIsABoolean() {
        //Input from somewhere
    }
   
    @Override
    public void onEnable() {
        for(Player player:Players) {
            HM.put(player.getName(), ThisIsABoolean());
        }
    }
   
    @EventHandler
    public void onPlayerJoin(PlayerJoinEvent event) {
        Player Joiner = event.getPlayer():
        HM.put(Joiner.getName(), ThisIsABoolean());
    }
    @EventHandler
    public void onPlayerLeave(PlayerQuitEvent event) {
        Player Leaver = event.getPlayer();
        HM.remove(event.getPlayer().getName());
    }
   
}

The problem, as i said, is in onEnable(), as the console reports no errors and the hashmap doesn't get any key, or at least not the player's name.
Can anyone help me out? Thanks in advance!

 

Maybe you could log the hashmap into a text file on disable, then when it enables again, you could retrieve the hashmap from this file on enable, then delete the file. You would have to find a method to save hashmaps into a text file though.

 

Are you saying you want to learn how to persist data?

http://www.google.com/search?q=site:bukkit.org+save+to+file+OR+yml+OR+YAML+OR+database

 

Take a look at this method another user posted

 

No, he's saying that when he reloads and calls getOnlinePlayers() in onEnable(), it returns nothing.

 

That should only be the case if no players are online when the plugin is reloaded, ie. the server just started up.

 

No, i tried it with two accounts. /reload, and the hashmap goes to hell. Players still online.

Anyway i tried to open a file to get the data, it's just not written on this thread. The only problem is the FOR_EACH construct that doesn't work. I'll try to get the data from the HashMap, as iBawb suggested.

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Your plugin will go out of scope during a reload and you will lose the data in your HashMap.

You need to save (persist) the map during onDisable()

 

I'm pretty new at Bukkit programming, how do i do that?

 

AmberOfSickness http://wiki.bukkit.org/Configuration_API_Reference
You could use that