Error cannot load plugin.. Help

I am starting up this plugin and it will not load. This is the error on the consel:

2012-09-05 18:18:28 [SEVERE] Could not load 'plugins\AutoSaveWorld.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.ClassNotFoundException: me.heyawesomepeople.autosave
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:155)
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:305)
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:230)
at org.bukkit.craftbukkit.CraftServer.loadPlugins(CraftServer.java:222)
at org.bukkit.craftbukkit.CraftServer.<init>(CraftServer.java:198)
at net.minecraft.server.ServerConfigurationManagerAbstract.<init>(ServerConfigurationManagerAbstract.java:50)
at net.minecraft.server.ServerConfigurationManager.<init>(SourceFile:11)
at net.minecraft.server.DedicatedServer.init(DedicatedServer.java:105)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:378)
at net.minecraft.server.ThreadServerApplication.run(SourceFile:539)
Caused by: java.lang.ClassNotFoundException: me.heyawesomepeople.autosave
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:44)
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:29)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:144)
... 9 more
Is it something in the plugin.yml? There are only 2 warnings and they are "Not Used" warnings. Thanks
-HeyAwesomePeople

 

I think your class specified in your plugin.yml doesn't match your actual main class.

 

I'm guessing you plugin.yml says something like this:

Code:

main: me.heyawesomepeople.autosave

...and you want it to say something more like this:

Code:

main: me.heyawesomepeople.autosave.MainPlugin

Eclipse (or any other IDE) won't give you errors or warnings for your plugin.yml, because it is just a text file as far as it is concerned.

Well, there might be an IDE (or an Eclipse plugin) that recognizes the yml format and can show you syntax errors, but it wouldn't have caught this.

 

_Waffles_

I am getting a similair issue.

Heres my yml now:

Code:

name: MeedlesManiacMessage
main: me.dudemanmax.meedlesmaniacmessages.Main
version: 0.1
author: dudemanmax
description: Simple Join Message Plugin.

My code:

Code:

package me.dudemanmaxmeedlesmaniacmessages;
 
import org.bukkit.ChatColor;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.plugin.java.JavaPlugin;
 
public class Main extends JavaPlugin{
public static Main plugin;
 
@EventHandler
public void onPlayerJoin(PlayerJoinEvent event){
Player player = event.getPlayer();
event.setJoinMessage(ChatColor.GOLD + "Hello " + player.getName() + ". Welcome To: " + player.getWorld().getName() + ". The time is " + player.getWorld().getTime());
 
 
 
}
}

and my error:

Code:

C:\Users\yummy_000\Desktop\TestServer>java -Xms1024M -Xmx1024M -jar craftbukkit.
jar -o true
210 recipes
27 achievements
20:29:17 [INFO] Starting minecraft server version 1.4.7
20:29:17 [INFO] Loading properties
20:29:17 [INFO] Default game type: SURVIVAL
20:29:17 [INFO] Generating keypair
20:29:17 [INFO] Starting Minecraft server on *:25565
20:29:17 [INFO] This server is running CraftBukkit version git-Bukkit-1.4.7-R0.1
-16-g226204e-b2616jnks (MC: 1.4.7) (Implementing API version 1.4.7-R0.2-SNAPSHOT
)
20:29:17 [SEVERE] Could not load 'plugins\MeedlesManiacMessags.jar' in folder 'p
lugins'
org.bukkit.plugin.InvalidPluginException: java.lang.ClassNotFoundException: me.d
udemanmax.meedlesmaniacmessages.Main
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.j
ava:184)
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.
java:305)
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager
.java:230)
at org.bukkit.craftbukkit.v1_4_R1.CraftServer.loadPlugins(CraftServer.ja
va:239)
at org.bukkit.craftbukkit.v1_4_R1.CraftServer.<init>(CraftServer.java:21
7)
at net.minecraft.server.v1_4_R1.PlayerList.<init>(PlayerList.java:55)
at net.minecraft.server.v1_4_R1.DedicatedPlayerList.<init>(SourceFile:11
)
at net.minecraft.server.v1_4_R1.DedicatedServer.init(DedicatedServer.jav
a:104)
at net.minecraft.server.v1_4_R1.MinecraftServer.run(MinecraftServer.java

 

In the plugin.yml its me.dudemanmax.meedlesmaniacmessages.Main but in the code its me.dudemanmaxmeedlesmaniacmessages.Main, you are missing a dot in the code or have an extra dot.

 

_Waffles_

Lol yea have I learned my lesson.

I changed it to that but it still shows up as an error.

Heres what I have.

Code:

name: MeedlesManiacMessage
main: me.dudemanmaxmeedlesmaniacmessages.Main
description: Simple Join Message Plugin.
version: 0.1
author: dudemanmax
 
 
  

And my code:

Code:

package me.dudemanmaxmeedlesmaniacmessages.Main;
 
import org.bukkit.ChatColor;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.plugin.java.JavaPlugin;
 
public class Main extends JavaPlugin{
    public static Main plugin;
   
    @EventHandler
    public void onPlayerJoin(PlayerJoinEvent event){
        Player player = event.getPlayer();
        event.setJoinMessage(ChatColor.GOLD + "Hello " + player.getName() + ". Welcome To: " + player.getWorld().getName() + ". The time is " + player.getWorld().getTime());
       
       
       
       
    }
}

 

Is the error exactly the same? or is it a different error?
If its the same check that the class file exported correctly.

 

I got it to load, I had .Main in my code which I was not supposed to have. But now my plugin is not operating properly. It is not displaying the message like I need it to. Hers my code:

Code:

package me.dudemanmaxmeedlesmaniacmessages;
 
import org.bukkit.ChatColor;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.plugin.java.JavaPlugin;
 
public class Main extends JavaPlugin{
    public static Main plugin;
   
    @EventHandler
    public void onPlayerJoin(PlayerJoinEvent event){
        Player player = event.getPlayer();
        event.setJoinMessage(ChatColor.GOLD + "Hello " + player.getName() + ". Welcome To: " + player.getWorld().getName() + ". The time is " + player.getWorld().getTime());
       
       
       
       
    }
}

 

you need to change it to this

Code:

public class Main extends JavaPlugin implements Listener{//TODO this is so the event handler can use the class properly
    public static Main plugin;
 
    public void onEnable()
    {
        getServer().getPluginManager().registerEvents(this, this)//You need to register the listener before the messages will get called
    }
 
    @EventHandler
    public void onPlayerJoin(PlayerJoinEvent event){
        Player player = event.getPlayer();
        event.setJoinMessage(ChatColor.GOLD + "Hello " + player.getName() + ". Welcome To: " +             player.getWorld().getName() + ". The time is " + player.getWorld().getTime());
     
     
     
     
    }
}

 

it comes up with an error. For both of my plugins.