[Plugin devlopment] My Commands doesn't work! Need help!

Hello Forum,
i develop a Minecraft Bukkit Plugin... But my Commands doesn't work!
Here is a Error Message:

Code:

13:59:33 [WARNUNG] Unexpected exception while parsing console command "teleportmap"
org.bukkit.command.CommandException: Unhandled exception executing command 'teleportmap' in plugin BoJustus vDEV VERSION 0.1
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46)
    at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:186)
    at org.bukkit.craftbukkit.v1_4_R1.CraftServer.dispatchCommand(CraftServer.java:514)
    at org.bukkit.craftbukkit.v1_4_R1.CraftServer.dispatchServerCommand(CraftServer.java:506)
    at net.minecraft.server.v1_4_R1.DedicatedServer.al(DedicatedServer.java:260)
    at net.minecraft.server.v1_4_R1.DedicatedServer.r(DedicatedServer.java:225)
    at net.minecraft.server.v1_4_R1.MinecraftServer.q(MinecraftServer.java:494)
    at net.minecraft.server.v1_4_R1.MinecraftServer.run(MinecraftServer.java:427)
    at net.minecraft.server.v1_4_R1.ThreadServerApplication.run(SourceFile:849)
Caused by: java.lang.NullPointerException
    at me.BoJustus.Core.Main.onCommand(Main.java:179)
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
    ... 8 more

Plugin.yml:

Code:

  teleportmap:
    description: Teleport YOU to the new Map
    usage: /<command>

Main.java (The Command Class):

Code:

if(cmd.getName().equalsIgnoreCase("teleportmap"))
        {
            p.sendMessage("Trying to teleport you...");
            teleport();
        if (sender instanceof Player) {
            p.sendMessage("...");
            teleport();
        }
        else {
            Player p = (Player) sender;
           
            p.sendMessage("Please wait...");
            teleport();
           
 
 
 
        }
        return true;
        }

What is false?


Sorry my english is not so good because I am from Germany

 

Wrong section, durch die Art und Weise. Dies geht in die Plugin Entwicklung tätig.

Und ist, dass Sie ganze plugin.yml oder nur einen Teil. Wenn es nur ein Teil ist, können wir die ganze Sache?
Auch das, was auf der Linie 179?

(google translate)

 

your problem is failing to use the teleport function properly, along with logic error trying to teleport non-players.
please read http://jd.bukkit.org/rb/apidocs/

 

Moving to the proper forum. BoJustus