NoSuchMethodError with YamlConfiguration

I'm getting the above mentioned exception upon loading the configuration of a yml file.

Code:

Code:

// Look for defaults in the jar
      Reader defConfigStream = null;

      try
      {
         defConfigStream = new InputStreamReader(plugin.getResource(playerListFileName), "UTF-8");

         if (defConfigStream != null)
         {
            YamlConfiguration defConfig = YamlConfiguration.loadConfiguration(defConfigStream);
            playerListCfg.setDefaults(defConfig);
         }
      }

Error happens in this line:

Code:

YamlConfiguration defConfig = YamlConfiguration.loadConfiguration(defConfigStream);

I have not coded plugins since after 1.7.2 was released.
So I might miss something due to recent API changes.
I'm building against Bukit 1.7.9 and have updated my standard config handler to use a Reader instead of the ambiguous InputStreamReader.
But now this error came up and I don't know why.
The overload for a "Reader" argument in the ".loadConfiguration()" method shows up in Eclipse intellisense
and the API docs also say, that "Reader" is a valid argument type.
But when loading the plugin, it crashes at this statement.

The Exception:

Code:

java.lang.NoSuchMethodError: org.bukkit.configuration.file.YamlConfiguration.loadConfiguration(Ljava/io/Reader;)Lorg/bukkit/configuration/file/YamlConfiguration;
   at com.github.CubieX.PreviousName.PNConfigHandler.reloadPlayerListFile(PNConfigHandler.java:86) ~[?:?]
   at com.github.CubieX.PreviousName.PNConfigHandler.initConfig(PNConfigHandler.java:36) ~[?:?]
   at com.github.CubieX.PreviousName.PNConfigHandler.<init>(PNConfigHandler.java:27) ~[?:?]
   at com.github.CubieX.PreviousName.PreviousName.onEnable(PreviousName.java:36) ~[?:?]
   at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:218) ~[craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
   at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:457) [craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
   at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:384) [craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
   at org.bukkit.craftbukkit.v1_7_R1.CraftServer.loadPlugin(CraftServer.java:298) [craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
   at org.bukkit.craftbukkit.v1_7_R1.CraftServer.enablePlugins(CraftServer.java:280) [craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
   at net.minecraft.server.v1_7_R1.MinecraftServer.m(MinecraftServer.java:342) [craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
   at net.minecraft.server.v1_7_R1.MinecraftServer.g(MinecraftServer.java:319) [craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
   at net.minecraft.server.v1_7_R1.MinecraftServer.a(MinecraftServer.java:275) [craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
   at net.minecraft.server.v1_7_R1.DedicatedServer.init(DedicatedServer.java:175) [craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
   at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:424) [craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
   at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [craftbukkit-1.7.2-R0.2.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]

 

@CubieX Which version of Bukkit are you compiling with?

 

Code:java

 
saveResource("myresource.yml", false);
 

 

Don't wrap the InputStream in an InputStreamReader, you should pass it directly to YamlConfiguration#loadConfiguration: http://jd.bukkit.org/dev/apidocs/org/bukkit/configuration/file/YamlConfiguration.html

 

loadConfiguration(InputStream) is deprecated. Until now I did it the way you suggested.
But now I want to use a Reader instead to avoid the deprecated method.
And yes, I know that deprecated does not mean I may not use it.
But you are encouraged to not use deprecated methods in new designs if an alternative is available.

But I don't understand the error here.
Or was the "Reder" overload introduced with 1.7.10?
I'm not able to download dev builds of Bukkit 1.7.10 atm. It says:

For all dev builds. So I can't try it with 1.7.10.

 

You'd need to build your own bukkit from github for 1.7.10

As for the error, save it to a file first then and use a File reference.

 

isn't it FileConfiguration defConfig = YamlConfiguration...stuffhere?

Edit: Nevah mind, I see whats trynna happen

 

This is my entire method:

Code:

// Create file with defaults or reload from disk if existing
   public void reloadPlayerListFile()
   {
      if (null == playerListFile)
      {
         playerListFile = new File(plugin.getDataFolder(), playerListFileName);
      }
      playerListCfg = YamlConfiguration.loadConfiguration(playerListFile);

      // Look for defaults in the jar
      Reader defConfigStream = null;

      try
      {
         defConfigStream = new InputStreamReader(plugin.getResource(playerListFileName), "UTF-8");

         if (null != defConfigStream)
         {
            YamlConfiguration defConfig = YamlConfiguration.loadConfiguration(defConfigStream); // FIXME crash
            playerListCfg.setDefaults(defConfig);
         }
      }
      catch (UnsupportedEncodingException e)
      {        
         //e.printStackTrace();
         PreviousName.log.severe(PreviousName.logPrefix + "Invalid encoding exception upon opening playerListFile!");
      }     
   }

So I first create a file reference and then look for a file with defaults in my plugin
to save those default values to the file referenced above.
This is the way I did it until now. But with passing an InputStream instead of a Reader.

And your suggestion is to write an empty file to disk an then fill it with the defaults?

 

Either that, or store a default copy of the file and use JavaPlugin#saveResource to write it to your relevant file.

 

I'll try that instead. Thanks.