CustomConfig Instance Problem

I putted it in the ConfigurationManager. But i thought i could paste it.

 

Oh maybe you can explain why this is not working?

Code:

    private Main main;
    public ConfigurationManager(Main main) {
        this.main = main;
    }   
    public File Test = new File(main.getDataFolder() + "/Test.yml");

 

How do i get the getDataFolder then?

 

Then i says again that the File is null

Error (open) Error (close)

Code:

[16:56:12 ERROR]: Error occurred while enabling Test v1.0 (Is it up to date?)
java.lang.IllegalArgumentException: File cannot be null
        at org.apache.commons.lang.Validate.notNull(Validate.java:192) ~[spigot.
jar:git-Spigot-3d850ec-809c399]
        at org.bukkit.configuration.file.YamlConfiguration.loadConfiguration(Yam
lConfiguration.java:173) ~[spigot.jar:git-Spigot-3d850ec-809c399]
        at me.jarnoboy404.TestConfig.ConfigurationManager.<init>(ConfigurationMa
nager.java:19) ~[?:?]
        at me.jarnoboy404.TestConfig.Main.onEnable(Main.java:8) ~[?:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:264) ~[s
pigot.jar:git-Spigot-3d850ec-809c399]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader
.java:337) [spigot.jar:git-Spigot-3d850ec-809c399]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManage
r.java:403) [spigot.jar:git-Spigot-3d850ec-809c399]
        at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugin(CraftServer.
java:382) [spigot.jar:git-Spigot-3d850ec-809c399]
        at org.bukkit.craftbukkit.v1_12_R1.CraftServer.enablePlugins(CraftServer
.java:331) [spigot.jar:git-Spigot-3d850ec-809c399]
        at org.bukkit.craftbukkit.v1_12_R1.CraftServer.reload(CraftServer.java:7
53) [spigot.jar:git-Spigot-3d850ec-809c399]
        at org.bukkit.Bukkit.reload(Bukkit.java:525) [spigot.jar:git-Spigot-3d85
0ec-809c399]
        at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:
27) [spigot.jar:git-Spigot-3d850ec-809c399]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:14
1) [spigot.jar:git-Spigot-3d850ec-809c399]
        at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchCommand(CraftServ
er.java:649) [spigot.jar:git-Spigot-3d850ec-809c399]
        at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchServerCommand(Cra
ftServer.java:635) [spigot.jar:git-Spigot-3d850ec-809c399]
        at net.minecraft.server.v1_12_R1.DedicatedServer.aP(DedicatedServer.java
:444) [spigot.jar:git-Spigot-3d850ec-809c399]
        at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:
407) [spigot.jar:git-Spigot-3d850ec-809c399]
        at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:
679) [spigot.jar:git-Spigot-3d850ec-809c399]
        at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.jav
a:577) [spigot.jar:git-Spigot-3d850ec-809c399]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_161]

 

I don't know. See the error in the message i send before

 

I have found it thank you. This is what i needed to do:

ConfigurationManager Class (open) ConfigurationManager Class (close)

Code:

package me.jarnoboy404.TestConfig;

import java.io.File;
import java.io.IOException;

import org.bukkit.configuration.InvalidConfigurationException;
import org.bukkit.configuration.file.FileConfiguration;
import org.bukkit.configuration.file.YamlConfiguration;

public class ConfigurationManager {
       @SuppressWarnings("unused")
    private Main main;
        public File Test;
        public FileConfiguration testdata;
        public ConfigurationManager(Main main) {
            this.main = main;
            this.Test = new File(main.getDataFolder() + "/Test.yml");
            this.testdata = YamlConfiguration.loadConfiguration(Test);
        } 
    //public File Test = new File(main.getDataFolder() + "/Test.yml");
    //public FileConfiguration testdata = YamlConfiguration.loadConfiguration(Test);
   
    public void saveFiles(){
        try {
            testdata.save(Test);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
   
    public void loadFiles(){
       if(Test.exists()){
       try {
           testdata.load(Test);
       } catch (IOException | InvalidConfigurationException e) {
           e.printStackTrace();
       }
     }else{
           try {
               testdata.options().copyDefaults(true);
               testdata.save(Test);
           } catch (IOException e) {
               e.printStackTrace();
             }
     }
    }
}

But one question. There is no simpeler way to do this?

@timtower Can you explain the whole thing because nothing works =(

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