Solved Can't find where this nullpointerexception comes from.

This is an ongoing problem for me, I just can't find where the nullpointer comes from. I assume it is coming from my main class. Yes, I know it is bad to store player objects. Please don't rant about that. I know.
The error:

Code:

[10:49:18] [Server thread/WARN]: [LolSwag] Task #2 for LolSwag v128 generated an exception
java.lang.NullPointerException
    at me.knightuniverse.clubminecraft.Main$1.run(Main.java:29) ~[?:?]
    at org.bukkit.craftbukkit.v1_7_R4.scheduler.CraftTask.run(CraftTask.java:71) ~[spigot.jar:git-Spigot-1649]
    at org.bukkit.craftbukkit.v1_7_R4.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:350) [spigot.jar:git-Spigot-1649]
    at net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:641) [spigot.jar:git-Spigot-1649]
    at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:289) [spigot.jar:git-Spigot-1649]
    at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:584) [spigot.jar:git-Spigot-1649]
    at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:490) [spigot.jar:git-Spigot-1649]
    at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628) [spigot.jar:git-Spigot-1649]

My main class file:

Code:

package me.knightuniverse.clubminecraft;


import java.util.ArrayList;
import java.util.List;

import org.bukkit.Bukkit;
import org.bukkit.Material;
import org.bukkit.entity.Player;
import org.bukkit.event.Listener;
import org.bukkit.plugin.PluginManager;
import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.scoreboard.Team;

public class Main extends JavaPlugin implements Listener{
    public static List<Player> onlinePlayers = new ArrayList<Player>();
    public static Team blue;
    public static Team red;
    public static Team spec;

public void onEnable(){
    spec = Bukkit.getScoreboardManager().getMainScoreboard().getTeam("Spectator");
    blue = Bukkit.getScoreboardManager().getMainScoreboard().getTeam("Blue");
    red = Bukkit.getScoreboardManager().getMainScoreboard().getTeam("Red");
        Bukkit.getServer().getScheduler().scheduleSyncRepeatingTask(this, new Runnable() {
            public void run() {
                for(Player p : onlinePlayers){
                    p.getInventory().getItemInHand().setDurability((short) 0);
                    p.getInventory().getHelmet().setDurability((short) 0);
                    p.getInventory().getChestplate().setDurability((short) 0);
                    p.getInventory().getLeggings().setDurability((short) 0);
                    p.getInventory().getBoots().setDurability((short) 0);
                }
                for(Player p : onlinePlayers){
                    p.setFoodLevel(20);
                    p.setSaturation(20);
                    if(!IsSpec.isSpectating(p)){
                    if(p.getLocation().getBlock().getType().equals(Material.WATER) || p.getLocation().getBlock().getType().equals(Material.STATIONARY_WATER)){
                        p.damage(Math.random()*2.0+2.0);
                    }
                }
                   
                    GameOver.TestIfOver();
                    AutomateServer.StartAutomating();
                    FireballHandler.HandleFireBall();
                    DoubleJumpHandler.HandleDoubleJump();
                    GoldPressurePlateHandler.HandleGoldPresssurePlate();
                }
            }
    }, 20, 0);
    PluginManager pm = getServer().getPluginManager();
    pm.registerEvents(this, this);
    pm.registerEvents(new CharlesJonesAkaDamageHandler(), this);
    pm.registerEvents(new FireballHandler(), this);
    pm.registerEvents(new PlayerHashmapReset(), this);
    pm.registerEvents(new MiscListeners(), this);
    }

}

 

@Dsi_Mario

Code:

at me.knightuniverse.clubminecraft.Main$1.run(Main.java:29) ~[?:?]

Line 29. They are not holding anything in their hands and you are trying to set the item durability.

 

Thank you! I probably should have found that error earlier when I added it and it immediately started throwing a NullPointerException.