Development Assistance NPE

It's giving me a NPE when I try to rename an empty slot in my inventory when it's meant to return.

Code:

if(p.getItemInHand() != null && !p.getItemInHand().getType().equals(Material.AIR)) {
  ItemMeta meta = p.getItemInHand().getItemMeta();
  meta.setDisplayName("testing"); // NPE Here
  p.getItemInHand().setItemMeta(meta);
  p.sendMessage("Renamed.");
} else {
  return true;
}

 

@BagduFagdu Full class & stacktrace please.

 

On which line is the error?

 

@AdamQpzm @FisheyLP I marked out where.

Code:

@Override
    public boolean onCommand(CommandSender sender, Command cmd, String s, String[] args) {

        if(!(sender instanceof Player)) {
            return true;
        }
       
        if(args.length < 1) {
            sender.sendMessage("Incorrect syntax.");
            return true;
        }
       
        Player p = (Player) sender;
       
        if(p.getItemInHand() != null && !p.getItemInHand().getType().equals(Material.AIR)) {
              ItemMeta meta = p.getItemInHand().getItemMeta();
              meta.setDisplayName("testing"); // This is where the NPE is.
              p.getItemInHand().setItemMeta(meta);
              p.sendMessage("Renamed.");
            } else {
              return true;
            }
       
        return false;
    }

Code:

[10:56:07 INFO]: Bagdu issued server command: /setname testing
[10:56:07 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'setname' in plugin RenamePlugin v1.0
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[minecraft_server.jar:git-PaperSpigot-0348f3f-7722428]
    at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[minecraft_server.jar:git-PaperSpigot-0348f3f-7722428]
    at org.bukkit.craftbukkit.v1_8_R2.CraftServer.dispatchCommand(CraftServer.java:646) ~[minecraft_server.jar:git-PaperSpigot-0348f3f-7722428]
    at net.minecraft.server.v1_8_R2.PlayerConnection.handleCommand(PlayerConnection.java:1140) [minecraft_server.jar:git-PaperSpigot-0348f3f-7722428]
    at net.minecraft.server.v1_8_R2.PlayerConnection.a(PlayerConnection.java:975) [minecraft_server.jar:git-PaperSpigot-0348f3f-7722428]
    at net.minecraft.server.v1_8_R2.PacketPlayInChat.a(PacketPlayInChat.java:45) [minecraft_server.jar:git-PaperSpigot-0348f3f-7722428]
    at net.minecraft.server.v1_8_R2.PacketPlayInChat.a(PacketPlayInChat.java:1) [minecraft_server.jar:git-PaperSpigot-0348f3f-7722428]
    at net.minecraft.server.v1_8_R2.PlayerConnectionUtils$1.run(SourceFile:13) [minecraft_server.jar:git-PaperSpigot-0348f3f-7722428]
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_31]
    at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_31]
    at net.minecraft.server.v1_8_R2.SystemUtils.a(SourceFile:60) [minecraft_server.jar:git-PaperSpigot-0348f3f-7722428]
    at net.minecraft.server.v1_8_R2.MinecraftServer.A(MinecraftServer.java:764) [minecraft_server.jar:git-PaperSpigot-0348f3f-7722428]
    at net.minecraft.server.v1_8_R2.DedicatedServer.A(DedicatedServer.java:372) [minecraft_server.jar:git-PaperSpigot-0348f3f-7722428]
    at net.minecraft.server.v1_8_R2.MinecraftServer.z(MinecraftServer.java:703) [minecraft_server.jar:git-PaperSpigot-0348f3f-7722428]
    at net.minecraft.server.v1_8_R2.MinecraftServer.run(MinecraftServer.java:606) [minecraft_server.jar:git-PaperSpigot-0348f3f-7722428]
    at java.lang.Thread.run(Thread.java:745) [?:1.8.0_31]
Caused by: java.lang.NullPointerException
    at me.bagdufagdu.utils.commands.setnameCommand.onCommand(setnameCommand.java:50) ~[?:?]
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[minecraft_server.jar:git-PaperSpigot-0348f3f-7722428]
    ... 15 more

 

Try replacing

with

Code:

p.getItemInHand().getType() != Material.AIR

 

@FisheyLP Wouldn't make a difference.

 

@FisheyLP No change.
Not sure if it's a problem with PaperSpigot.