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Unexpected error java util concurrentmodificationexception

creates behind the scene an iterator of show, then inside the for loop you create another iterator: Iterator< InvoiceEntities> iter = show. and use the second iterator to modify show ncurrentModificationException. checkForComodification( Unknown Source) at java. you can just use a try and catch, because in my experience the intended action happened but also with an error. AbstractFrontendController : An unexpected error occurred for user demo on session 4379dc1b. ConcurrentModificationException at java. 15: 44: 48] [ main/ ERROR] [ LaunchWrapper/ ] : Unable to launch java. NoSuchMethodError: net. scription: Unexpected error java. ConcurrentModificationException at com. lot of moving sounds, and does not safely create and destroy them, then you get a ConcurrentModificationException. Your problem seems to be that new items ( new keys) are being added to the map at the same time that the tick( ) method is trying to traverse its keySet. Modifying a collection in any way while traversing it will throw a.

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  • Video:Error util concurrentmodificationexception

    Util unexpected error

    Run the Minecraft Launcher, select the " Forge" profile, and select " Edit Profile", then in the " Java Settings ( Advanced) " section, check the box for the executable and change the path to c: \ Program Files\ java\ jre7\ javaw. exe and then save the. This is an error I often met while reprogramming. the reason or detail of this exception are pretty clear. it is unallowed to modify the collection( you are adding a new element) while it is being iterated. At least the syntax for DO. Actually minecraft not using java 8 started with update 20. It works perfectly. Always use spoilers when posting error logs. Basically, just update your java to the latest version, and it should work. Rollback Post to.

    内部のコードを読むと, ArrayListとIteratorは内部で「 変更された回数」 を保持しています . そしてArrayListのiterator( ) メソッドで生成されるIteratorはforで回す際に使うnext( ) メソッドなどを起動した際に, 変更された回数にミスマッチがないか.