java.util.ConcurrentModificationException: This exception has no message.

Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Samebug tips

,
via javacodegeeks.com by Unknown author

Causes : The Collection is internally modified, while a thread is iterating over it. OR after the creation of an iterator, the Collection is internally modified by any method other than the iterator’s own methods for removal and addition.

,
via oracle.com by Unknown author

In order to avoid more than one threads accessing or modifying the same object, you can synchronize them over the object, in order to allow only one thread to manipulate it over the time

Solutions on the web

via GitHub by Dream-Master
, 1 year ago
This exception has no message.
via Oracle Community by 2829269, 1 year ago
via GitHub by ForeverPVP
, 2 years ago
This exception has no message.
via GitHub by richardcox13
, 2 years ago
This exception has no message.
via GitHub by MysticCity
, 2 years ago
This exception has no message.
java.util.ConcurrentModificationException:
at java.util.ArrayList$Itr.checkForComodification(Unknown Source)
at java.util.ArrayList$Itr.next(Unknown Source)
at modtweaker2.mods.forestry.handlers.ThermionicFabricator$RemoveCastings.apply(ThermionicFabricator.java:113)
at minetweaker.runtime.MTTweaker.apply(MTTweaker.java:65)
at minetweaker.MineTweakerAPI.apply(MineTweakerAPI.java:173)
at modtweaker2.mods.forestry.handlers.ThermionicFabricator.removeCasts(ThermionicFabricator.java:50)
at undefined.Forestry.__script__(Forestry.zs:209)
at undefined.__ZenMain__.run(Forestry.zs)
at minetweaker.runtime.MTTweaker.load(MTTweaker.java:157)
at minetweaker.MineTweakerImplementationAPI.reload(MineTweakerImplementationAPI.java:624)
at minetweaker.MineTweakerImplementationAPI.onServerStart(MineTweakerImplementationAPI.java:555)
at minetweaker.mc1710.MineTweakerMod.onServerAboutToStart(MineTweakerMod.java:166)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:208)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:118)
at cpw.mods.fml.common.Loader.serverAboutToStart(Loader.java:809)
at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:91)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:387)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)

Users with the same issue

Samebug visitor profile picture
Unknown user
Once, 3 months ago
Samebug visitor profile picture
Unknown user
Once, 9 months ago
Samebug visitor profile picture
Unknown user
Once, 10 months ago
Samebug visitor profile picture
Unknown user
Once, 1 year ago
Samebug visitor profile picture
Unknown user
Once, 1 year ago
60 more bugmates

Know the solutions? Share your knowledge to help other developers to debug faster.