Paper: UHCReloaded malformed class name Error

[DanWunderBurst]

List of Plugins.

• BuycraftX
• EsentialsX
• FastAsyncWorldEdit
• MinkFreeze
• MysqlEcoBridge
• OpenInv
• PAC
• PlugMan
• ProtocolLib
• UHCReloaded
• Vault
• Worldedit

[19:14:37 ERROR]: Error occurred while enabling UHCReloaded v3.2.4 (Is it up to date?)
java.lang.InternalError: Malformed class name
        at java.lang.Class.getSimpleName(Unknown Source) ~[?:1.8.0_131]
        at java.lang.Class.isAnonymousClass(Unknown Source) ~[?:1.8.0_131]
        at co.aikar.timings.MinecraftTimings.getPluginTaskTimings(MinecraftTimings.java:62) ~[patched_1.11.2.jar:git-Paper-1104]
        at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftTask.<init>(CraftTask.java:41) ~[patched_1.11.2.jar:git-Paper-1104]
        at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftScheduler.runTaskTimer(CraftScheduler.java:139) ~[patched_1.11.2.jar:git-Paper-1104]
        at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftScheduler.runTaskLater(CraftScheduler.java:113) ~[patched_1.11.2.jar:git-Paper-1104]
        at org.bukkit.scheduler.BukkitRunnable.runTaskLater(BukkitRunnable.java:64) ~[patched_1.11.2.jar:git-Paper-1104]
        at net.upd4ting.uhcreloaded.uhcrg.onEnable(UHCReloaded.java:120) ~[?:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:271) ~[patched_1.11.2.jar:git-Paper-1104]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:316) [patched_1.11.2.jar:git-Paper-1104]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:407) [patched_1.11.2.jar:git-Paper-1104]
        at org.bukkit.craftbukkit.v1_11_R1.CraftServer.enablePlugin(CraftServer.java:378) [patched_1.11.2.jar:git-Paper-1104]
        at org.bukkit.craftbukkit.v1_11_R1.CraftServer.enablePlugins(CraftServer.java:328) [patched_1.11.2.jar:git-Paper-1104]
        at net.minecraft.server.v1_11_R1.DedicatedServer.init(DedicatedServer.java:209) [patched_1.11.2.jar:git-Paper-1104]
        at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:612) [patched_1.11.2.jar:git-Paper-1104]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_131]
[19:14:37 INFO]: [UHCReloaded] Disabling UHCReloaded v3.2.4
[19:14:37 ERROR]: Error occurred while disabling UHCReloaded v3.2.4 (Is it up to date?)
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
        at java.util.ArrayList.rangeCheck(Unknown Source) ~[?:1.8.0_131]
        at java.util.ArrayList.get(Unknown Source) ~[?:1.8.0_131]
        at net.upd4ting.uhcreloaded.uhcraa.uhcrM(Game.java:553) ~[?:?]
        at net.upd4ting.uhcreloaded.uhcraa.uhcrg(Game.java:76) ~[?:?]
        at net.upd4ting.uhcreloaded.uhcrg.onDisable(UHCReloaded.java:205) ~[?:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:273) ~[patched_1.11.2.jar:git-Paper-1104]
        at org.bukkit.plugin.java.JavaPluginLoader.disablePlugin(JavaPluginLoader.java:344) [patched_1.11.2.jar:git-Paper-1104]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:320) [patched_1.11.2.jar:git-Paper-1104]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:407) [patched_1.11.2.jar:git-Paper-1104]
        at org.bukkit.craftbukkit.v1_11_R1.CraftServer.enablePlugin(CraftServer.java:378) [patched_1.11.2.jar:git-Paper-1104]
        at org.bukkit.craftbukkit.v1_11_R1.CraftServer.enablePlugins(CraftServer.java:328) [patched_1.11.2.jar:git-Paper-1104]
        at net.minecraft.server.v1_11_R1.DedicatedServer.init(DedicatedServer.java:209) [patched_1.11.2.jar:git-Paper-1104]
        at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:612) [patched_1.11.2.jar:git-Paper-1104]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_131]

[Spottedleaf]

This is not paper's fault, but the author's.

1. The class used is not following the JLS (Java Language Specification) for class names (hence the malformed class name message).
2. _This does not happen under normal circumstances, i.e through the Java Compiler._
3. This most likely happened through creating classes at runtime.

The proper naming for a class is as follows:

• Can only contain the '$', '_', a-z, A-Z characters (all Latin-1)
• Starts with a letter
• Not empty

The above are for top level classes. These are the rules that apply to anonymous classes and local classes:

• "The binary name of a local class (§14.3) consists of the binary name of its immediately enclosing type, followed by $, followed by a non-empty sequence of digits, followed by the simple name of the local class." (Java Language Specification Section 13.1)
• "The binary name of an anonymous class (§15.9.5) consists of the binary name of its immediately enclosing type, followed by $, followed by a non-empty sequence of digits." (Java Language Specification Section 13.1)

Sources:
https://docs.oracle.com/javase/specs/jls/se8/html/jls-3.html#jls-Identifier
https://docs.oracle.com/javase/specs/jls/se8/html/jls-8.html#jls-8.1
https://docs.oracle.com/javase/specs/jls/se8/html/jls-13.html#jls-13.1