Solved Add to list to save in config not working

Hi. I am making a court plugin. One of the features of this plugin is that you can join the jury by doing /jury join. I create a list in the config file of all the jury members. There can be up to 20 jury members. I thought in one of my threads I got everything squared away with lists in the config but then I start my server I got an internal error when I tried to run /jury join.

Here is the error:

Code:

[16:01:30 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'jury' in plugin EasyCourt v1.0
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[spigot.jar:git-Spigot-13716d9-0899683]
    at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[spigot.jar:git-Spigot-13716d9-0899683]
    at org.bukkit.craftbukkit.v1_8_R1.CraftServer.dispatchCommand(CraftServer.java:645) ~[spigot.jar:git-Spigot-13716d9-0899683]
    at net.minecraft.server.v1_8_R1.PlayerConnection.handleCommand(PlayerConnection.java:1115) [spigot.jar:git-Spigot-13716d9-0899683]
    at net.minecraft.server.v1_8_R1.PlayerConnection.a(PlayerConnection.java:950) [spigot.jar:git-Spigot-13716d9-0899683]
    at net.minecraft.server.v1_8_R1.PacketPlayInChat.a(PacketPlayInChat.java:26) [spigot.jar:git-Spigot-13716d9-0899683]
    at net.minecraft.server.v1_8_R1.PacketPlayInChat.a(PacketPlayInChat.java:53) [spigot.jar:git-Spigot-13716d9-0899683]
    at net.minecraft.server.v1_8_R1.PacketHandleTask.run(SourceFile:13) [spigot.jar:git-Spigot-13716d9-0899683]
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_25]
    at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_25]
    at net.minecraft.server.v1_8_R1.MinecraftServer.z(MinecraftServer.java:683) [spigot.jar:git-Spigot-13716d9-0899683]
    at net.minecraft.server.v1_8_R1.DedicatedServer.z(DedicatedServer.java:316) [spigot.jar:git-Spigot-13716d9-0899683]
    at net.minecraft.server.v1_8_R1.MinecraftServer.y(MinecraftServer.java:623) [spigot.jar:git-Spigot-13716d9-0899683]
    at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:526) [spigot.jar:git-Spigot-13716d9-0899683]
    at java.lang.Thread.run(Thread.java:745) [?:1.8.0_25]
Caused by: java.lang.NullPointerException
    at me.Vinnya124.EasyCourt.onCommand(EasyCourt.java:71) ~[?:?]
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spigot.jar:git-Spigot-13716d9-0899683]
    ... 14 more
>

Creating the list in the begging in the function onCommand:

Code:

List<String> juryMembers = (List<String>) this.getConfig().getList("Jury Members");

Accessing and modifying the list:

Code:

}else if(commandLabel.equalsIgnoreCase("jury")){
        if (args.length == 1){
            if(args[0].equalsIgnoreCase("join")){   
                if(juryMembers.size() >= 20){
                    player.sendMessage(ChatColor.RED + "The court's jury is full!");
                }else if(juryMembers.size() < 20 ){
                    juryMembers.add(player.getName());
                    getConfig().set("Jury Members", juryMembers);
                    player.sendMessage(ChatColor.GREEN + "You are now a member of the court's jury!");
                    saveConfig();
                }
            }else if(args[0].equalsIgnoreCase("leave")){
                juryMembers.remove(player.getName());
                player.sendMessage(ChatColor.GOLD + "You are no longer a member of the court's jury!");
            }
        }
        return true;
    }

I don't know why I keep getting this error. Any ideas?

 

Instead of using the getList() method, use getStringList() and also don't have spaces in your keys(you should separate words with "-" or "_").

You also didn't specify what line 71 is? If it is the instantiation of juryMembers, check if the list is null before trying to get it.

 

@SuperOriginal Thanks it worked!!! XD