java - which thread will get concurrentModificationException with two threads -


i have 2 thread 1 thread adding,removing in arraylist , thread iterating iterator arraylist. thread concurrentmodificationexcetion;

the thread iterator. it's iterator detects (on best effort basis) underlying collection has changed, , throws exception.

of course common situation concurrentmodificationexception when using single thread both iterates collection , attempts modify it:

list<string> foo = ... ; for(string s : foo) {  // exception thrown here after 1st iteration     foo.add("let's throw exception!"); }

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