Server crashes with plugin at Random integer....

Hello,

i have a small problem with my plugin! Sometimes when i use an method my server crashed and the most of the time not!

The error of console is:

Code:

Ich hatte nur das oberste ;)
 
[CODE] ------------------------------
Server thread dump (Look for plugins here before reporting to Spigot!):
------------------------------
Current Thread: Server thread
      PID: 13 | Suspended: false | Native: false | State: RUNNABLE
      Stack:
              java.util.Random.next(Random.java:189)
              java.util.Random.nextDouble(Random.java:444)
              java.lang.Math.random(Math.java:716)
              XX.getAttribut(ItemCalculator.java:731)
              XX.getAttribut(ItemCalculator.java:738)
              XX.getAttribut(ItemCalculator.java:738)
              XX.getAttribut(ItemCalculator.java:738)
              XX.getAttribute(ItemCalculator.java:724)
              XX.giveItemAttributes(ItemCalculator.java:196)
              XX.giveDrop(ItemCalculator.java:743)
              XX.RPGListener.onKillEntity(RPGListener.java:165)
              sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
              sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
              sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
              java.lang.reflect.Method.invoke(Method.java:601)
              org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:292)
              org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
              org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:30)
              org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502)
              org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487)
              org.bukkit.craftbukkit.v1_7_R2.event.CraftEventFactory.callEntityDeathEvent(CraftEventFactory.java:349)
              net.minecraft.server.v1_7_R2.EntityChicken.dropDeathLoot(EntityChicken.java:106)
              net.minecraft.server.v1_7_R2.EntityLiving.die(EntityLiving.java:791)
              net.minecraft.server.v1_7_R2.EntityLiving.damageEntity(EntityLiving.java:739)
              net.minecraft.server.v1_7_R2.EntityAnimal.damageEntity(SourceFile:145)
              org.bukkit.craftbukkit.v1_7_R2.entity.CraftLivingEntity.damage(CraftLivingEntity.java:203)
              org.bukkit.craftbukkit.v1_7_R2.entity.CraftLivingEntity.damage(CraftLivingEntity.java:188)
              com.faldoria.rpg.skills.skills.AssassineBlade.use(AssassineBlade.java:27)
              com.faldoria.rpg.skills.types.ActiveEntitySkill.use(ActiveEntitySkill.java:28)
------------------------------
Current Thread: Signal Dispatcher
      PID: 4 | Suspended: false | Native: false | State: RUNNABLE
      Stack:
------------------------------
Current Thread: Finalizer
      PID: 3 | Suspended: false | Native: false | State: WAITING
      Stack:
              java.lang.Object.wait(Native Method)

[/CODE]

The code at the lines is:

Code:java

  private int getAttribut(boolean isArmor) { //line 730 is here
          int attribut = (int) (Math.random() * 13 + 1);
          if(!isArmor && attribut != 3 && attribut < 9 ){
          return attribut;
          }
          if(isArmor && (attribut > 8 || attribut == 3)){
          return attribut;
          }
          return getAttribut(isArmor);
        }

It's only something for a random int under special conditions...

Has somebody an idea why my server crashes?

Thanks a lot !

 

Seek support where you acquired your server mod.