Solved NPE involving config

So I'm not the best with config files and I'm trying to make my kits plugin easier to implement new kits. First step is making a config file and I've already got an error.

Line 63 in class main is:

Code:java

public final static List<String> worlds = Main.inst().getConfig().getStringList("worlds");

Now here's where I think I'm doing it wrong, here's my config.yml

Code:

###############
# SlimeKits   #
# Pink__Slime #
###############
 
worlds:
    - pvp
    - example_world
 
kits:
    archer:
        enabled: true
    tank:
        enabled: false
    turtle:
        enabled: true
    grandpa:
        enabled: true
    knight:
        enabled: true
    creeper:
        enabled: true
    ninja:
        enabled: true
    wither:
        enabled: true
    stomper:
        enabled: true
    angel:
        enabled: true
    soldier:
        enabled: true
    spider:
        enabled: true
    trickster:
        enabled: true
    blaze:
        enabled: true
    dwarf:
        enabled: true
    fisherman:
        enabled: true
    cannon:
        enabled: true
    poseidon:
        enabled: true
    thor:
        enabled: true

 

I think the config part isn't the error. I think it's the Main.inst().
[EDIT] And your config file isn't set up correctly. Try

Code:

worlds:
  - pvp
  - default

Hopefully that'd work!

 

kreashenz
Changing config to what you said doesn't work. Same error at same line.

The Main.inst(). is my method for getting a static method for getConfig() because I can't do:
public final static List<String> worlds = getConfig().getStringList("worlds");

Unless you can think of another way, I'm out of ideas.

 

Pink__Slime Does it have to be static? Try

Code:java

private <mainClass> main
public <Class>(<mainClass> main){
this.main = main
}
 
public final List<String> world = main.getConfig().getStringList("worlds");

 

Can we see your inst() method declaration please?

 

It's an NPE meaning that your List, world, is null. It is null because when your code tries to retrieve the stringList from the config it can't find it.

If you were to make your own method, have it return the value you want already because my guess is your returning JavaPlugin and using its getConfig() method doesn't return your config. So try what kreashenz is or try:

Code:java

public class PluginMain extends JavaPlugin {
//onEnable
//onDisable
public static FileConfiguration inst(JavaPlugin plugin) {
return plugin.getConfig();
}
}

Code:java

public class Worlds {
private PluginMain main;
public Worlds(PluginMain main) {
this.main = main;
}
public static final List<String> = main.inst(main).getStringList("worlds");
}
 

 

Make sure you are not calling JavaPlugin's methods before your plugin has been initialized.