Remove sheep with sertain name?

I wan't to remove all sheeps that is named something but i get error and i don't know why. Here is my code.

Code:java

 List<Entity> e = Bukkit.getWorld("world").getEntities();
 
for(Entity entity : e) {
if(e instanceof CraftSheep){
CraftSheep sheep = (CraftSheep) entity;
String name = sheep.getCustomName();
 
if(name == "§aS§bp§ca§dl§ev§ao§bt§ca §da§ev§ai§bs§c!") {
Bukkit.getServer().broadcastMessage("removed");
}
}
}

Here is the error i get:

Code:

org.bukkit.command.CommandException: Unhandled exception executing command 'clearbitces' in plugin Whitelist v0.1
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[spigot.jar:git-Spigot-1468]
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:180) ~[spigot.jar:git-Spigot-1468]
at org.bukkit.craftbukkit.v1_7_R3.CraftServer.dispatchCommand(CraftServer.java:728) ~[spigot.jar:git-Spigot-1468]
at net.minecraft.server.v1_7_R3.PlayerConnection.handleCommand(PlayerConnection.java:985) [spigot.jar:git-Spigot-1468]
at net.minecraft.server.v1_7_R3.PlayerConnection.a(PlayerConnection.java:830) [spigot.jar:git-Spigot-1468]
at net.minecraft.server.v1_7_R3.PacketPlayInChat.a(PacketPlayInChat.java:28) [spigot.jar:git-Spigot-1468]
at net.minecraft.server.v1_7_R3.PacketPlayInChat.handle(PacketPlayInChat.java:65) [spigot.jar:git-Spigot-1468]
at net.minecraft.server.v1_7_R3.NetworkManager.a(NetworkManager.java:180) [spigot.jar:git-Spigot-1468]
at net.minecraft.server.v1_7_R3.ServerConnection.c(ServerConnection.java:81) [spigot.jar:git-Spigot-1468]
at net.minecraft.server.v1_7_R3.MinecraftServer.v(MinecraftServer.java:713) [spigot.jar:git-Spigot-1468]
at net.minecraft.server.v1_7_R3.DedicatedServer.v(DedicatedServer.java:283) [spigot.jar:git-Spigot-1468]
at net.minecraft.server.v1_7_R3.MinecraftServer.u(MinecraftServer.java:576) [spigot.jar:git-Spigot-1468]
at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java:482) [spigot.jar:git-Spigot-1468]
at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:628) [spigot.jar:git-Spigot-1468]
Caused by: java.lang.NoClassDefFoundError: org/bukkit/craftbukkit/v1_7_R1/entity/CraftSheep
at nojus741.whitelist.main.onCommand(main.java:107) ~[?:?]
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spigot.jar:git-Spigot-1468]
... 13 more
Caused by: java.lang.ClassNotFoundException: org.bukkit.craftbukkit.v1_7_R1.entity.CraftSheep
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:67) ~[spigot.jar:git-Spigot-1468]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:62) ~[spigot.jar:git-Spigot-1468]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_51]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_51]
at nojus741.whitelist.main.onCommand(main.java:107) ~[?:?]
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spigot.jar:git-Spigot-1468]
... 13 more

 

You are likely building your plugin with another version of craftbukkit than your server is running on.
And why dont get the livingentities for a world, and then check if they are an instanceof org.bukkit.entity.Sheep?

 

I don't think that you need CraftSheep, Sheep should work just fine. CraftSheep is from the minecraft vinilla code and is version sensitive with MC's version. "java.lang.NoClassDefFoundError" is the error you get when the required version the plugin is looking for isn't the version that the server has.

 

Locked.

We do not support the development of plugins for unofficial builds.