NullPointerException

Hello I'm new to coding and I am making my own rank system using Redis to store data my IDE shows no errors but when I try to enable my plugin in the server it does not work.

Stack Trace (open) Stack Trace (close)

17.11 15:26:22 [Server] INFO java.lang.NullPointerException 17.11 15:26:22 [Server] INFO at us.gempvp.core.Core.setupJedis(Core.java:92) ~[?:?] 17.11 15:26:22 [Server] INFO at us.gempvp.core.Core.onEnable(Core.java:41) ~[?:?] 17.11 15:26:22 [Server] INFO at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:316) ~[custom.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95] 17.11 15:26:22 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:332) [custom.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95] 17.11 15:26:22 [Server] INFO at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:412) [custom.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95] 17.11 15:26:22 [Server] INFO at org.bukkit.craftbukkit.v1_7_R4.CraftServer.loadPlugin(CraftServer.java:476) [custom.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95] 17.11 15:26:22 [Server] INFO at org.bukkit.craftbukkit.v1_7_R4.CraftServer.enablePlugins(CraftServer.java:394) [custom.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95] 17.11 15:26:22 [Server] INFO at net.minecraft.server.v1_7_R4.MinecraftServer.n(MinecraftServer.java:360) [custom.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95] 17.11 15:26:22 [Server] INFO at net.minecraft.server.v1_7_R4.MinecraftServer.g(MinecraftServer.java:334) [custom.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95] 17.11 15:26:22 [Server] INFO at net.minecraft.server.v1_7_R4.MinecraftServer.a(MinecraftServer.java:290) [custom.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95] 17.11 15:26:22 [Server] INFO at net.minecraft.server.v1_7_R4.DedicatedServer.init(DedicatedServer.java:210) [custom.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95] 17.11 15:26:22 [Server] INFO at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:458) [custom.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95] 17.11 15:26:22 [Server] INFO at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628) [custom.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]

Code:

package us.gempvp.core;

import org.bukkit.plugin.java.*;

import redis.clients.jedis.*;
import us.gempvp.core.grant.*;
import us.gempvp.core.grant.procedure.*;
import us.gempvp.core.jedis.*;
import us.gempvp.core.profile.*;
import us.gempvp.core.profile.command.*;
import us.gempvp.core.rank.*;
import us.gempvp.core.rank.command.*;
import us.gempvp.core.rank.command.grant.*;
import us.gempvp.core.util.*;
import us.gempvp.core.util.command.*;
import us.gempvp.core.util.database.*;
import us.gempvp.core.util.file.*;

import org.bukkit.entity.*;

import java.util.*;
import org.bukkit.*;
import org.bukkit.event.*;
import org.bukkit.plugin.*;

public class Core extends JavaPlugin
{
    private static Core instance;
    private CommandFramework commandFramework;
    private ConfigFile configFile;
    private ConfigFile ranksFile;
    private RankHandler rankHandler;
    private String address;
    private int port;
    private JedisPool pool;
    private JedisPublisher publisher;
    private JedisSubscriber subscriber;
    private PermissionsDatabase permissionsDatabase;
   
    public void onEnable() {
        Core.instance = this;
        this.configFile = new ConfigFile(this, "config");
        this.ranksFile = new ConfigFile(this, "ranks");
        this.commandFramework = new CommandFramework(this);
        this.setupJedis();
        /////
        System.out.println("[Redis] Connected and stable");
        this.registerCommands();
        this.registerListeners();
        this.permissionsDatabase = new PermissionsDatabase(this);
        this.rankHandler = new RankHandler(this);
        for (final Player online : PlayerUtility.getOnlinePlayers()) {
            new Profile(online.getUniqueId(), new ArrayList<String>(), new ArrayList<Grant>()).asyncLoad();
        }
    }
   
    public void onDisable() {
        this.subscriber.getJedisPubSub().unsubscribe();
        this.pool.destroy();
        for (final Profile profile : Profile.getProfiles()) {
            if (profile.getPlayer() != null) {
                profile.getPlayer().removeAttachment(profile.getAttachment());
            }
            profile.save();
        }
        this.rankHandler.save();
        this.permissionsDatabase.getClient().close();
    }
   
    private void registerListeners() {
        final PluginManager pluginManager = Bukkit.getPluginManager();
        pluginManager.registerEvents((Listener)new GrantProcedureListeners(), (Plugin)this);
        pluginManager.registerEvents((Listener)new ProfileListeners(), (Plugin)this);
        pluginManager.registerEvents((Listener)new GrantListeners(), (Plugin)this);
    }
   
    private void registerCommands() {
        new RankCreateCommand();
        new RankDeleteCommand();
        new RankPrefixCommand();
        new RankSuffixCommand();
        new RankImportCommand();
        new RankAddPermissionCommand();
        new RankDeletePermissionCommand();
        new RankListPermissionsCommand();
        new ProfileAddPermissionCommand();
        new ProfileDeletePermissionCommand();
        new ProfileListPermissionsCommand();
        new GrantCommand();
        new GrantsCommand();
    }
   
    public void setupJedis() {
        this.address = this.configFile.getString("DATABASE.REDIS.HOST");
        this.port = this.configFile.getInt("DATABASE.REDIS.PORT");
        this.pool = new JedisPool(this.address, this.port);
        this.publisher = new JedisPublisher(this);
        this.subscriber = new JedisSubscriber(this);
    }
   
    public static Core getInstance() {
        return Core.instance;
    }
   
    public CommandFramework getCommandFramework() {
        return this.commandFramework;
    }
   
    public ConfigFile getConfigFile() {
        return this.configFile;
    }
   
    public ConfigFile getRanksFile() {
        return this.ranksFile;
    }
   
    public RankHandler getRankHandler() {
        return this.rankHandler;
    }
   
    public String getAddress() {
        return this.address;
    }
   
    public int getPort() {
        return this.port;
    }
   
    public JedisPool getPool() {
        return this.pool;
    }
   
    public JedisPublisher getPublisher() {
        return this.publisher;
    }
   
    public JedisSubscriber getSubscriber() {
        return this.subscriber;
    }
   
    public PermissionsDatabase getPermissionsDatabase() {
        return this.permissionsDatabase;
    }
}

 

@DevAPI You call the method 'setupJedis()' before you initialize 'configFile', which means that calling 'getString(String)' on 'configFile' throws a NullPointerException.

 

Ok I fixed that updated the code but now I get another error
@KarimAKL

Code:

17.11 21:56:53 [Server] Startup [02:56:53 ERROR]: Error occurred while enabling gCore v1.0.0 (Is it up to date?)
17.11 21:56:53 [Server] INFO java.lang.NoClassDefFoundError: redis/clients/jedis/JedisPool
17.11 21:56:53 [Server] INFO at us.gempvp.core.Core.setupJedis(Core.java:96) ~[?:?]
17.11 21:56:53 [Server] INFO at us.gempvp.core.Core.onEnable(Core.java:45) ~[?:?]
17.11 21:56:53 [Server] INFO at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:316) ~[custom.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
17.11 21:56:53 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:332) [custom.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
17.11 21:56:53 [Server] INFO at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:412) [custom.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
17.11 21:56:53 [Server] INFO at org.bukkit.craftbukkit.v1_7_R4.CraftServer.loadPlugin(CraftServer.java:476) [custom.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
17.11 21:56:53 [Server] INFO at org.bukkit.craftbukkit.v1_7_R4.CraftServer.enablePlugins(CraftServer.java:394) [custom.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
17.11 21:56:53 [Server] INFO at net.minecraft.server.v1_7_R4.MinecraftServer.n(MinecraftServer.java:360) [custom.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
17.11 21:56:53 [Server] INFO at net.minecraft.server.v1_7_R4.MinecraftServer.g(MinecraftServer.java:334) [custom.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
17.11 21:56:53 [Server] INFO at net.minecraft.server.v1_7_R4.MinecraftServer.a(MinecraftServer.java:290) [custom.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
17.11 21:56:53 [Server] INFO at net.minecraft.server.v1_7_R4.DedicatedServer.init(DedicatedServer.java:210) [custom.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
17.11 21:56:53 [Server] INFO at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:458) [custom.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
17.11 21:56:53 [Server] INFO at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628) [custom.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
17.11 21:56:53 [Server] INFO Caused by: java.lang.ClassNotFoundException: redis.clients.jedis.JedisPool
17.11 21:56:53 [Server] INFO at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[?:1.8.0_222]
17.11 21:56:53 [Server] INFO at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:101) ~[custom.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
17.11 21:56:53 [Server] INFO at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:86) ~[custom.jar:git-Spigot-1.7.9-R0.2-208-ge0f2e95]
17.11 21:56:53 [Server] INFO at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_222]
17.11 21:56:53 [Server] INFO at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_222]
17.11 21:56:53 [Server] INFO ... 13 more

 

@DevAPI Maybe this helps? Btw, please don't send me PMs about this thread, i'll come to it when i wake up from my slumber. :7
If that doesn't help, try using your preferred search engine to look for an answer.

 

Sorry I was just trying to get help thanks I think I have fixed it by using intelji and putting my libraries into my core